FCC ID: 2AR82-SKIWB668BU2 IEEE 802.11b/g/n/a/ac 2T2R USB WiFi Module Integrated BT 2.1+EDR/4.2/5.0

FCC Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Caution: The user is cautioned that changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. FCC RF Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and any part of your body. The device must be professionally installed The intended use is generally not for the general public.It is generally for industry/commercial use. The connector is within the transmitter enclosure and can only be accessed by disassembly of the transmitter that is not normally required. the user has no access to the connector. Installation must be controlled. Installation requires special training This module has been assessed against the following FCC rule parts: CFR 47 FCC Part 15 C (15.247, DTS and DSS) and CFR 47 FCC Part 15 E (NII). It is applicable to the modular transmitter This radio transmitter 2AR82-SKIWB668BU2has been approved by Federal Communications Commission to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain indicated for any type listed are strictly prohibited for use with this device. The concrete contents to check are the following three points.

) Must use following one of the three antenna.

) Should be installed so that the end user cannot modify the antenna;

) Feed line should be designed in 50ohm Fine tuning of return loss etc. can be performed using a matching network. Antenna BT Frequency (MHz) Antenna Type MAX Antenna Gain (dBi) 2402-2480 PCB Antenna 3.94 Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) 1(WIFI0) 2(WIFI1) 2412-2462 2412-2462 PCB Antenna PCB Antenna 3.70 4.94 Antenna No. Frequency Band Antenna Type Max Antenna Gain (dBi) 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) UNII1 UNII1 UNII-2A UNII-2A UNII-2C UNII-2C UNII3 UNII3 PIFA PIFA PIFA PIFA PIFA PIFA PIFA PIFA 2.87 2.53 3.45 2.75 5.45 4.88 5.2 4.53 Canada Statement This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canadas licence-exempt RSS(s). Operation is subject to the following two conditions:

(1) This device may not cause interference.

(2) This device must accept any interference, including interference that may cause undesired operation of the device. L'metteur/rcepteur exempt de licence contenu dans le prsent appareil est conforme aux CNR d'Innovation, Sciences et Dveloppement conomique Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes :

1)L'appareil ne doit pas produire de brouillage;

2)L'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. The device for operation in the band 51505250 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile satellite systems Les dispositifs fonctionnant dans la bande de 5 150 5 250 MHz sont rservs uniquement pour une utilisation lintrieur afin de rduire les risques de brouillage prjudiciable aux systmes de satellites mobiles utilisant les mmes canaux. Please notice that if the ISED certification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the the following: Contains IC:

enclosed module. This exterior 24728-SKIWB668BU2 any similar wording that expresses the same meaning may be used. l'appareil hte doit porter une tiquette donnant le numro de certification du module d'Industrie Canada, prc d des mots Contient un module d'mission , du mot IC: 24728-SKIWB668BU2 ou d'une formulation similaire exprimant le mme sens, comme suit label can use wording such as The device meets the exemption from the routine evaluation limits in section 2.5 of RSS 102 and compliance with RSS-102 RF exposure, users can obtain Canadian information on RF exposure and compliance. Le dispositif rencontre l'exemption des limites courantes d'valuation dans la section 2.5 de RSS 102 etla conformit l'exposition de RSS-102 rf, utilisateurs peut obtenir l'information canadienne surl'exposition et la conformit de rf. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body. Cet metteur ne doit pas tre Co-plac ou ne fonctionnant en mme temps qu'aucune autre antenne oumetteur. Cet quipement devrait tre install et actionn avec une distance minimum de 20 centimtres entre le radiateur et votre corps. This radio transmitter 24728-SKIWB668BU2 has been approved by Innovation, Science and Economic Development Canada to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain Le prsent metteur radio 24728-SKIWB668BU2 a t approuv par Innovation, Sciences et Dveloppement conomique Canada pour fonctionner avec les types d'antenne numrs ci-dessous et ayant un gain admissible maximal. Les types d'antenne non inclus dans cette liste, et dont le gain est suprieur au gain maximal indiqu pour tout type figurant sur la liste, sont strictement interdits pour l'exploitation de l'metteur. The concrete contents to check are the following three points.

) Must use following one of the three antenna

) Should be installed so that the end user cannot modify the antenna;

) Feed line should be designed in 50ohm Fine tuning of return loss etc. can be performed using a matching network. Le contenu concret vrifier sont les trois points suivants.

) i l doit utiliser suivant de l'antenne.

) doivent tre installs de faon que l'utilisateur final ne peut pas modifier l'antenne

) La ligne dalimentation doit tre conue en 50ohm Le rglage prcis de la perte de rendement, etc. peut tre effectu en utilisant un rseau correspondant. Frequency (MHz) frquences 2402-2480 Antenna Type types d'antenne PCB Antenna MAX Antenna Gain (dBi) Gain maximal d'antenne Frequency (MHz) frquences 2412-2462 2412-2462 PCB Antenna PCB Antenna Antenna Type types d'antenne MAX Antenna Gain (dBi) Gain maximal d'antenne 3.94 3.70 4.94 Antenna d'antenne BT Antenna d'antenne 1(WIFI0) 2(WIFI1) Antenna No. Frequency (MHz) frquences Antenna Type Max Antenna Gain (dBi) types d'antenne Gain maximal d'antenne 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) 2412-2462 UNII1 UNII-2A UNII-2A UNII-2C UNII-2C UNII3 UNII3 PIFA PIFA PIFA PIFA PIFA PIFA PIFA PIFA 2.87 2.53 3.45 2.75 5.45 4.88 5.2 4.53 Notice to OEM integrator Must use the device only in host devices that meet the FCC/ISED RF exposure category of mobile, which means the device is installed and used at distances of at least 20cm from persons. The end user manual shall include FCC Part 15 /ISED RSS GEN compliance statements related to the transmitter as show in this manual. Host manufacturer is responsible for compliance of the host system with module installed with all other applicable requirements for the system such as Part 15 B, ICES 003. Host manufacturer is strongly recommended to confirm compliance with FCC/ISED requirements for the transmitter when the module is installed in the host. Must have on the host device a label showing Contains FCC ID: 2AR82-SKIWB668BU2IC: 24728-SKIWB668BU2 The use condition limitations extend to professional users, then instructions must state that this information also extends to the host manufacturers instruction manual. This module is stand-alone modular. If the end product will involve the Multiple simultaneously transmitting condition or different operational conditions for a stand-alone modular transmitter in a host, host manufacturer have to consult with module manufacturer for the installation method in end system. Installer should put it in the manual The device for operation in the band 51505250 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile satellite systems l'hte doit utiliser l'instrument uniquement dans des dispositifs qui rpondent la fcc / (catgorie d'exposition rf mobile, ce qui signifie le dispositif est install et utilis une distance d'au moins 20 cm de personnes. le manuel de l'utilisateur final doit inclure la partie 15 / (fac rss gen dclarations de conformit relatives l'metteur que de montrer dans ce manuel. le fabricant est responsable de la conformit de l'hte, le systme d'accueil avec le module install avec toutes les autres exigences applicables du systme comme la partie 15 b, ices - 003. accueillir le fabricant est fortement recommand de confirmer la conformit avec les exigences de la fcc /

(metteur lorsque le module est install dans l'hte. le dispositif d'accueil doivent avoir une tiquette indiquant contient FCC ID:2AR82-SKIWB668BU2IC:

24728-SKIWB668BU2 Les personnes charges de l'installation devraient figurer dans le manuel:

Les dispositifs fonctionnant dans la bande de 5 150 5 250 MHz sont rservs uniquement pour une utilisation lintrieur afin de rduire les risques de brouillage prjudiciable aux systmes de satellites mobiles utilisant les mmes canaux.

Guangzhou Shikun Electronic Technology Company Limited SKI.WB638BU.2_668BU IEEE 802.11b/g/n/a/ac 2T2R USB WiFi Module Integrated BT 2.1/3.0/4.2 Approved by Shikun Checked by Rechecked by Approved by Please send the original back to us after you have approved and signed. Approved by customer Comments Approved by Companys seal Customers Name:

REVISION HISTORY VERSION DATE BOARD ID PAGE DESCRIPTION AUTHOR V0 2020.01.06 All First Issued Sannis SKO.WB638U.1_668BU A19451 SKI.WB638BU.2_668BU Content 1. Introduction ............................................................................................................ 2 2. Features ................................................................................................................... 2 3. Block Diagram ............................................................................................... 3 4. Package Outline and Mounting .................................................... 3 5. Pin Definition .................................................................................................. 4 6. Product Pictures ............................................................................................ 4 7. Key Materials.................................................................................................. 5 8. General Requirements ................................................................................ 6 9. Electrical Characteristics............................................................................ 6 9.1 IEEE 802.11b Section .............................................................................................. 6 9.2 IEEE 802.11g Section .............................................................................................. 7 9.3 IEEE 802.11n HT20 Section .................................................................................. 8 9.4 IEEE 802.11n HT40 Section .................................................................................. 9 9.5 IEEE 802.11a Section ............................................................................................ 10 9.6 IEEE 802.11n HT20 Section(5GHz) .................................................................. 11 9.7 IEEE 802.11n HT40 Section(5GHz) .................................................................. 12 9.8 IEEE 802.11ac Section(5GHz) ............................................................................ 13 9.9 Bluetooth Section .................................................................................................... 14 10. Mechanical,Environmental and Reliability Tests15 11. Package ............................................................................................................... 17 12. Software Requirements ......................................................................... 17 QR-ZZPJ-017A 1 SKI.WB638BU.2_668BU 1. Introduction SKI.WB638BU.2_668BU module is based on MediaTek MT7668BUN solution. MT7668BUN is a highly integrated single chip which features a low power 2x2 802.11b/g/n Wi-Fi subsystem and a Bluetooth subsystem. The Wi-Fi subsystem contains the 802.11 a/b/g/n/ac radio, baseband, and MAC that are designed to meet both the low power and high throughput application. The Bluetooth subsystem contains the Bluetooth radio which complies with Bluetooth v2.1+EDR, v4.2, and v5.0, baseband, link controller. This documentation describes the engineering requirements specification. SKI.WB638BU.2_668BU MEDIATEK MT7668BUN MT7668BUN 2x2 802.11 a/b/g/n/ac Wi-Fi Wi-Fi 802.11b/g/n MAC 2.1+EDRv4.2 v5.0 2. Features IEEE Std. 802.11a IEEE Std. 802.11b IEEE Std. 802.11g IEEE Std. 802.11n IEEE Std. 802.11ac BT 2.1+EDR BT 4.2 BT 5.0 MT7668BUN 2.4GHz/5GHz 23mm21.5mm3mm Reserving System Chip Solution Band Dimensions Model SKI.WB638BU.2 _668BU Mode SMD QR-ZZPJ-017A 2 Installation Protocol l Frequency Antenna Remark IEEE 802.11a/b/g/n/ac BT2.1/4.2/5.0 2.4GHz/5GHz IPEX 23mm21.5mm3mm SKI.WB638BU.2_668BU 4. Package Outline and Mounting QR-ZZPJ-017A 3 Pin Definition SKI.WB638BU.2_668BU PIN SYMBOL DESCRIPTION TOP VIEW 1 2 3 4 6 7 9 3.3V 3.3V DM DP RESET WL_HOST_WAKE BT_HOSTWAKE 3.3V 3.3V USB_DM USB_DP 10K 10K 10K 5,8,10,11,12,13,14 GND GND 5. Product Pictures top view QR-ZZPJ-017A 4 SKI.WB638BU.2_668BU bottom view information view 6. Key Materials No. 1 2 3 Name PCB Model MT7668BUN SKI.WB638BU.2_668BU CF4040M00015T2115142 Remark Specification

76-QFN FR-4,4LAY 40MHz QR-ZZPJ-017A 5 SKI.WB638BU.2_668BU 7. General Requirements No. 8-1 8-2 8-3 8-4 8-5 8-6 8-7 Feature Operation Voltage Current Consumption Ripple Operation Temperature Antenna Type USB Storage Temperature Description 3.3V+/-0.3 700mA 100mV 0C to +40C External antenna High Speed USB 2.0 Interface

-40C to +125C 8. Electrical Characteristics

255 3.3V10%

The Test for electrical specification was performed under the following condition unless otherwise specified Ambient condition Temperature :25 5;

Power supply voltages3.3V (10%) input power at the Module;

8.1 IEEE 802.11b Section Items Specification Mode Channel Data rate Contents IEEE802.11b CCK CH1 to CH13 1, 2, 5.5, 11Mbps TX Characteristics Min. Typ. Max. Unit Remark 1. Power Levels(Calibrated) 1) For antenna port 2. Spectrum Mask @ target power 1) fc +/-11MHz to +/-22MHz 2) fc > +/-22MHz 3 Constellation Error(EVM)@ target power 1) 1Mbps 2) 2Mbps 3) 5.5Mbps 4) 11Mbps 4. Frequency Error RX Characteristics QR-ZZPJ-017A dBm dBr dBr dB dB dB dB ppm Unit 19

-30

-50

-10

-10

-10

-10 20 Max. 17

Typ. 15

-20 Min. 6 TX Characteristics Min. 6, 9, 12, 18, 24, 36, 48, 54Mbps Typ. Max. Unit Remark 1. Power Levels 1) For antenna port 2. Spectrum Mask @ target power 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 3 Constellation Error(EVM)@ target power 13 15 5 Minimum Input Level Sensitivity

(each chain) 1) 1Mbps (FER 8%) 2) 2Mbps (FER 8%) 3) 5.5Mbps (FER 8%) 4) 11Mbps (FER 8%) 6 Maximum Input Level (FER 8%) Items Specification Mode Channel Data rate 8.2 IEEE 802.11g Section 4 Frequency Error RX Characteristics Typ. 1) 6Mbps 2) 9Mbps 3) 12Mbps 4) 18Mbps 5) 24Mbps 6) 36Mbps 7) 48Mbps 8) 54Mbps 5 Minimum Input Level Sensitivity

(each chain) 1) 6Mbps (PER 10%) 2) 9Mbps (PER 10%) 3) 12Mbps (PER 10%) 4) 18Mbps (PER 10%) 5) 24Mbps (PER 10%) 6) 36Mbps (PER 10%) 7) 48Mbps (PER 10%) QR-ZZPJ-017A SKI.WB638BU.2_668BU

-83

-80

-79

-76

dBm dBm dBm dBm dBm Contents IEEE802.11g OFDM CH1 to CH13 17

-20

-28

-40

-5

-8

-10

-13

-16

-19

-22

-25 20 Max.

-85

-84

-82

-80

-77

-73

-69 dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm

-10

-20 Min.

7

8) 54Mbps (PER 10%) 6 Maximum Input Level (PER 10%)

-20

-65

dBm dBm SKI.WB638BU.2_668BU 9.3 IEEE 802.11n HT20 Section TX Characteristics Min. Typ. Max. Unit 2. Spectrum Mask @ target power 13 15 3. Constellation Error(EVM)@ target power Items Specification Mode Channel Data rate (MCS index) 1. Power Levels 1) For antenna port 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 Contents IEEE802.11n HT20 @ 2.4GHz OFDM CH1 to CH13 MCS0/1/2/3/4/5/6/7

-20 Min.

-20

17

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-28 20 Max.

-82

-79

-77

-74

-70

-66

-65

-64

dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm dBm dBm 4. Frequency Error RX Characteristics Typ. 5.Minimum Input Level Sensitivity

(each chain) 1) MCS0 (PER 10%) 2) MCS1 (PER 10%) 3) MCS2 (PER 10%) 4) MCS3 (PER 10%) 5) MCS4 (PER 10%) 6) MCS5 (PER 10%) 7) MCS6 (PER 10%) 8) MCS7 (PER 10%) 7. Maximum Input Level (PER 10%) QR-ZZPJ-017A 8 9.4 IEEE 802.11n HT40 Section SKI.WB638BU.2_668BU Items Specification Mode Channel Data rate (MCS index) 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 TX Characteristics Min. Typ. Max. Unit 1. Power Levels (Calibrated) 1) For antenna port 2. Spectrum Mask @target power 1) at fc +/-22MHz 2) at fc +/-40MHz 3) at fc > +/-60MHz 3. Constellation Error(EVM)@ target power 13 15 Contents IEEE802.11n HT40 @ 2.4GHz OFDM CH3 to CH11 MCS0/1/2/3/4/5/6/7

-20 Min.

-20

17

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-28 20 Max.

-79

-76

-74

-71

-67

-63

-62

-61

dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm dBm dBm 4. Frequency Error RX Characteristics Typ. 5. Minimum Input Level Sensitivity

(each chain) 1) MCS0 (PER 10%) 2) MCS1 (PER 10%) 3) MCS2 (PER 10%) 4) MCS3 (PER 10%) 5) MCS4 (PER 10%) 6) MCS5 (PER 10%) 7) MCS6 (PER 10%) 8) MCS7 (PER 10%) 6. Maximum Input Level (PER 10%) QR-ZZPJ-017A 9 9.5 IEEE 802.11a Section SKI.WB638BU.2_668BU Items Specification Mode Channel Data rate (MCS index) TX Characteristics Min. 6, 9, 12, 18, 24, 36, 48, 54Mbps Typ. Max. Unit 1. Power Levels (Calibrated) 1) For antenna port 2. Spectrum Mask @target power 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 3. Constellation Error(EVM)@ target power 12 14 Contents IEEE802.11a OFDM CH36 to CH165 16

-20

-28

-40

-5

-8

-10

-13

-16

-19

-22

-25 20 Max.

-82

-81

-79

-77

-74

-70

-66

-65

dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm dBm dBm

-20 Min.

-30 4 Frequency Error RX Characteristics Typ. 1) 6Mbps 2) 9Mbps 3) 12Mbps 4) 18Mbps 5) 24Mbps 6) 36Mbps 7) 48Mbps 8) 54Mbps 5 Minimum Input Level Sensitivity

(each chain) 1) 6Mbps (PER 10%) 2) 9Mbps (PER 10%) 3) 12Mbps (PER 10%) 4) 18Mbps (PER 10%) 5) 24Mbps (PER 10%) 6) 36Mbps (PER 10%) 7) 48Mbps (PER 10%) 8) 54Mbps (PER 10%) 6. Maximum Input Level (PER 10%) QR-ZZPJ-017A 10 SKI.WB638BU.2_668BU 9.6 IEEE 802.11n HT20 Section(5GHz) Items Contents Specification Mode Channel Data rate (MCS index) IEEE802.11n HT20 @ 5GHz BPSK, QPSK, 16QAM, 64QAM and OFDM CH36 to CH165 MCS0/1/2/3/4/5/6/7 TX Characteristics Min. Typ. Max. Unit 1. Power Levels (Calibrated) 1) For antenna port 2. Spectrum Mask @target power 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 3. Constellation Error(EVM)@ target power 11 13

-20 Min.

-30

15

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-28 20 Max.

-82

-79

-77

-74

-70

-66

-65

-64

dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm dBm dBm 4. Frequency Error RX Characteristics Typ. 6. Minimum Input Level Sensitivity

(each chain) 1) MCS0 (PER 10%) 2) MCS1 (PER 10%) 3) MCS2 (PER 10%) 4) MCS3 (PER 10%) 5) MCS4 (PER 10%) 6) MCS5 (PER 10%) 7) MCS6 (PER 10%) 8) MCS7 (PER 10%) 6. Maximum Input Level (PER 10%) 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 QR-ZZPJ-017A 11 SKI.WB638BU.2_668BU 9.7 IEEE 802.11n HT40 Section(5GHz) Items Contents Specification Mode Channel Data rate (MCS index) IEEE802.11n HT40 @ 5GHz BPSK, QPSK, 16QAM, 64QAM and OFDM CH38 to CH163 MCS0/1/2/3/4/5/6/7 TX Characteristics Min. Typ. Max. Unit 1. Power Levels (Calibrated) 1) For antenna port 2. Spectrum Mask @target power 1) at fc +/-21MHz 2) at fc +/-40MHz 3) at fc > +/-60MHz 3. Constellation Error(EVM)@ target power 11 13

-20 Min.

-30

15

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-28 20 Max.

-79

-76

-74

-71

-67

-63

-62

-61

dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm dBm dBm 4. Frequency Error RX Characteristics Typ. 7. Minimum Input Level Sensitivity

(each chain) 1) MCS0 (PER 10%) 2) MCS1 (PER 10%) 3) MCS2 (PER 10%) 4) MCS3 (PER 10%) 5) MCS4 (PER 10%) 6) MCS5 (PER 10%) 7) MCS6 (PER 10%) 8) MCS7 (PER 10%) 6. Maximum Input Level (PER 10%) 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 QR-ZZPJ-017A 12 9.8 IEEE 802.11ac Section(5GHz) SKI.WB638BU.2_668BU Items Specification Mode Channel Data rate (MCS index) TX Characteristics 1. Power Levels (Calibrated) 1) For antenna port 2. Spectrum Mask @VHT20/VHT40/VHT80 target power 1) at fc +/-11MHz/21MHz/41MHz 2) at fc +/-20MHz/40MHz/80MHz 3) at fc +/-30MHz/60MHz/120MHz 3. Constellation Error(EVM)@ target power

Min. Typ. Min. Typ. 11 13 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 9) MCS8 10) MCS9 4. Frequency Error RX Characteristics 5.Minimum Input Level Sensitivity

(each chain) 1) MCS0 (PER 10%) 2) MCS1 (PER 10%) 3) MCS2 (PER 10%) 4) MCS3 (PER 10%) 5) MCS4 (PER 10%) 6) MCS5 (PER 10%) 7) MCS6 (PER 10%) QR-ZZPJ-017A 13 BPSK, QPSK, 16QAM, 64QAM ,256QAM and OFDM Contents IEEE802.11ac CH36 to CH165 VHT20 CH38 to CH163 VHT40 CH42 to CH157 VHT80 MCS0/1/2/3/4/5/6/7/8/9 Remar k Max. Max. 15

-20

-28

-40

-5

-10

-13

-16

-19

-22

-25

-27

-30

-32 20 Max. VHT 40

-79

-76

-74

-71

-67

-63

-62 Unit Unit dBm dBr dBr dBr dB dB dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm VHT 20

-82

-79

-77

-74

-70

-66

-65 VHT 80

-76

-73

-71

-68

-64

-60

-59

-20 Min.

Typ. 8) MCS7 (PER 10%) 9) MCS8(PER 10%) 10) MCS9(PER 10%) 6. Maximum Input Level (PER 10%)

-30

-64

-59

-57

-58

-53

-51

-61

-56

-54

dBm dBm dBm dBm SKI.WB638BU.2_668BU 9.9 Bluetooth Section Items Specification Mode Number of Channel Frequency Band Contents BT2.1+EDR/4.2/5.0 FHSS,GFSK,DPSK,DQPSK 79 Channels Max. 2.402 GHz ~2.480GHz Unit dBm dB dBm 4 4

-93.5 Min. Typ. Remark 1. Output Power 2. Gain step 3. Receiver sensitivity (BER 0.1%) 4. Maximum usable signal (BER 0.1%) 5. C/I co-channel (BER<0.1%) 6. C/I 1MHz (BER<0.1%) 7. C/I 2MHz (BER<0.1%) 8. C/I3MHz (BER<0.1%) 9. C/I Image channel (BER<0.1%) 10. C/I Image 1MHz (BER<0.1%) 11. Inter-modulation 12. Out-of-band blocking 1). 30MHz to 2000MHz 2). 2000MHz to 2399MHz 3). 2498MHz to 3000MHz 4). 3000MHz to 12.75GHz 13. Modulation characteristics 1). f1avg 2). f2max (For at least 99.9% of all f2max) 3). f1avg /f2avg 14. ICFT 15. Carrier frequency drift 1). One slot packet (DH1) 2). Two slot packet (DH3) 3). Five slot packet (DH5) 4). Max drift rate 16. TX output spectrum(20dB bandwidth) 17. In-Band spurious emission 1). 2MHz offset

8

-80

11 0

-30

-40

-9

-20

175

+75

+25

+40

+40 20 1000

-5 4

-14

-42

-49

-25

-50

-13

157 140 0.98 20 15 15 15 6 922 2

-10

-27

-27

-10 140 115 0.8

-75

-25

-40

-40

14 dB dB dB dB dB dB dB dBm dBm dBm dBm KHz KHz KHz KHz KHz KHz KHz KHz KHz/50us

-45

-20 dBm QR-ZZPJ-017A 2). 3MHz offset 3). >3MHz offset

-48

-48

-40

-40 dBm dBm SKI.WB638BU.2_668BU 9. Mechanical,Environmental and Reliability Tests Test Items Test Conditions Qty Criteria Condition 10-1 Drop test 760mm(0.5~9.5kg 1xBox After test, the outer box and inner box will not been broken by appearance visual inspection, and the products should be ok. The packed samples was tested at below condition:

Drop height:

610mm(9.5~18.5kg) Drop time: 1x corner, 3x edge and 6x face. X-Y-Z direction, first Frequency changing from After test, the outer box and inner box Vibration 10Hz to 30Hz to will not been broken by appearance 10-2 test 10Hz,amplitude 2.0mm, 1xBox visual inspection and the products should be ok. 5 times vibrations, 5x times vibration. Soldering Soldering 10-3 ability test

(Only for SKI module) temperature:

2455 Soldering duration:

30.5S Temperature High and Humidity Operation Test Low 10-4 10-5 Temperature Operation Test Leave samples in 60, 90%

RH @ 24 hours Leave samples in -15

@24 hours 1.After soldering, the soldered area must be covered by a smooth bright solder layer, some deficiencies such as a small amount of the pinhole, not wetting are allowed, but the deficiencies can not be in the same place 2. At least 90% of soldered area shall be covered continuously by the soldering material. After test, the products appearance, power, EVM and frequency error functional parameter shall be satisfied with the test specification. After test, the products appearance, power, EVM and frequency error functional parameter shall be satisfied with the test specification. 3 4 4 QR-ZZPJ-017A 15 Leave samples in 60, 90% RH for 4x hours 10-7 temperature Leave samples in -15 for 4x hours 10-6 10-8 10-9 High Temperature and Humidity Start Test Low start test High Temperature and Humidity Storage Test Low Temperature Storage Test Leave samples in 85, 95%

RH @ 48 hours Leave samples in -40,

@48 hours 10-10 Thermal Shock Test

-40~85dwell time 30min50cycles 10-11 Aging Test 60120Hrs 10-12 Salt spray test NSS,35C,PH:6.5~7.224H Discharge voltage:

1kV C: 50pF Discharge resistance330 Positive10 times 1 time for each second SKI.WB638BU.2_668BU 4 4 4 4 4 10 2 After test, power on and off the samples for 3x tiems, the samples should be able to start normally After test, power on and off the samples for 3x tiems, the samples should be able to start normally After test, the products appearance, power, EVM and frequency error functional parameter shall be satisfied with the test specification. After test, the products appearance, power, EVM and frequency error functional parameter shall be satisfied with the test specification. After test, the products appearance, power, EVM and frequency error functional parameter shall be satisfied with the test specification. The products at high temperature for a long time can continuous work normally The Sample shall has no minor or major defects, such as physical damage, crack, corrosion, deformation etc;

10-13 ESD 3 The products can recoverable smoothly after ESD test. QR-ZZPJ-017A 16 SKI.WB638BU.2_668BU 10. Package 11. Software Requirements The driver supports the following operating systems: Microsoft Windows XP, Vista and Win7. Windows XPVista win7 QR-ZZPJ-017A 17

Guangzhou Shikun Electronic Technology Company Limited SKI.WB638BU.2_668BU IEEE 802.11b/g/n/a/ac 2T2R USB WiFi Module Integrated BT 2.1/3.0/4.2 Approved by Shikun Checked by Rechecked by Approved by Please send the original back to us after you have approved and signed. Approved by customer Comments Approved by Companys seal Customers Name:

REVISION HISTORY VERSION DATE BOARD ID PAGE DESCRIPTION AUTHOR V0 2020.01.06 All First Issued Sannis SKO.WB638U.1_668BU A19451 SKI.WB638BU.2_668BU Content 1. Introduction ............................................................................................................ 2 2. Features ................................................................................................................... 2 3. Block Diagram ............................................................................................... 3 4. Package Outline and Mounting .................................................... 3 5. Pin Definition .................................................................................................. 4 6. Product Pictures ............................................................................................ 4 7. Key Materials ................................................................................................. 5 8. General Requirements ................................................................................ 6 9. Electrical Characteristics ........................................................................... 6 9.1 IEEE 802.11b Section .............................................................................................. 6 9.2 IEEE 802.11g Section .............................................................................................. 7 9.3 IEEE 802.11n HT20 Section .................................................................................. 8 9.4 IEEE 802.11n HT40 Section .................................................................................. 9 9.5 IEEE 802.11a Section ............................................................................................ 10 9.6 IEEE 802.11n HT20 Section(5GHz) .................................................................. 11 9.7 IEEE 802.11n HT40 Section(5GHz) .................................................................. 12 9.8 IEEE 802.11ac Section(5GHz) ............................................................................ 13 9.9 Bluetooth Section .................................................................................................... 14 10. Mechanical,Environmental and Reliability Tests15 11. Package ............................................................................................................... 17 12. Software Requirements ......................................................................... 17 QR-ZZPJ-017A 1 SKI.WB638BU.2_668BU 1. Introduction SKI.WB638BU.2_668BU module is based on MediaTek MT7668BUN solution. MT7668BUN is a highly integrated single chip which features a low power 2x2 802.11b/g/n Wi-Fi subsystem and a Bluetooth subsystem. The Wi-Fi subsystem contains the 802.11 a/b/g/n/ac radio, baseband, and MAC that are designed to meet both the low power and high throughput application. The Bluetooth subsystem contains the Bluetooth radio which complies with Bluetooth v2.1+EDR, v4.2, and v5.0, baseband, link controller. This documentation describes the engineering requirements specification. SKI.WB638BU.2_668BU MEDIATEK MT7668BUN MT7668BUN 2x2 802.11 a/b/g/n/ac Wi-Fi Wi-Fi 802.11b/g/n MAC 2.1+EDRv4.2 v5.0 2. Features IEEE Std. 802.11a IEEE Std. 802.11b IEEE Std. 802.11g IEEE Std. 802.11n IEEE Std. 802.11ac BT 2.1+EDR BT 4.2 BT 5.0 MT7668BUN 2.4GHz/5GHz 23mm21.5mm3mm Reserving System Chip Solution Band Dimensions Model SKI.WB638BU.2 _668BU Mode SMD QR-ZZPJ-017A 2 Installation Protocol l Frequency Antenna Remark IEEE 802.11a/b/g/n/ac BT2.1/4.2/5.0 2.4GHz/5GHz IPEX 23mm21.5mm3mm SKI.WB638BU.2_668BU 4. Package Outline and Mounting QR-ZZPJ-017A 3 Pin Definition SKI.WB638BU.2_668BU TOP VIEW PIN 1 2 3 4 6 7 9 5,8,10,11,12,13,14 SYMBOL 3.3V 3.3V DM DP RESET WL_HOST_WAKE BT_HOSTWAKE GND DESCRIPTION 3.3V 3.3V USB_DM USB_DP 10K 10K 10K GND 5. Product Pictures top view QR-ZZPJ-017A 4 SKI.WB638BU.2_668BU bottom view information view 6. Key Materials No. 1 2 3 Name PCB Model MT7668BUN SKI.WB638BU.2_668BU CF4040M00015T2115142 Remark Specification

76-QFN FR-4,4LAY 40MHz QR-ZZPJ-017A 5 SKI.WB638BU.2_668BU 7. General Requirements Feature Description No. 8-1 8-2 8-3 8-4 8-5 8-6 8-7 Operation Voltage Current Consumption Ripple Operation Temperature Antenna Type USB Storage Temperature 3.3V+/-0.3 700mA 100mV 0C to +40C External antenna High Speed USB 2.0 Interface

-40C to +125C 8. Electrical Characteristics

255 3.3V10%

The Test for electrical specification was performed under the following condition unless otherwise specified Ambient condition Temperature :25 5;

Power supply voltages3.3V (10%) input power at the Module;

8.1 IEEE 802.11b Section Items Specification Mode Channel Data rate Contents IEEE802.11b CCK CH1 to CH11 1, 2, 5.5, 11Mbps Max. TX Characteristics Min. Typ. Unit Remark 1. Power Levels(Calibrated) 1) For antenna port 2. Spectrum Mask @ target power 1) fc +/-11MHz to +/-22MHz 2) fc > +/-22MHz 3 Constellation Error(EVM)@ target power 1) 1Mbps 2) 2Mbps 3) 5.5Mbps 4) 11Mbps 4. Frequency Error RX Characteristics QR-ZZPJ-017A dBm dBr dBr dB dB dB dB ppm Unit 17

-30

-50

-10

-10

-10

-10 20 Max. 17

Typ. 15

-20 Min. 6 SKI.WB638BU.2_668BU 5 Minimum Input Level Sensitivity

(each chain) 1) 1Mbps (FER 8%) 2) 2Mbps (FER 8%) 3) 5.5Mbps (FER 8%) 4) 11Mbps (FER 8%) 6 Maximum Input Level (FER 8%)

-10

-83

-80

-79

-76

dBm dBm dBm dBm dBm 8.2 IEEE 802.11g Section Items Contents TX Characteristics Min. Remark 1. Power Levels 1) For antenna port 2. Spectrum Mask @ target power 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 3 Constellation Error(EVM)@ target power 13 15 Specification Mode Channel Data rate 1) 6Mbps 2) 9Mbps 3) 12Mbps 4) 18Mbps 5) 24Mbps 6) 36Mbps 7) 48Mbps 8) 54Mbps 4 Frequency Error RX Characteristics 5 Minimum Input Level Sensitivity

(each chain) 1) 6Mbps (PER 10%) 2) 9Mbps (PER 10%) 3) 12Mbps (PER 10%) 4) 18Mbps (PER 10%) 5) 24Mbps (PER 10%) 6) 36Mbps (PER 10%) 7) 48Mbps (PER 10%) QR-ZZPJ-017A IEEE802.11g OFDM CH1 to CH11 6, 9, 12, 18, 24, 36, 48, 54Mbps Max. Typ. Unit 15

-20

-28

-40

-5

-8

-10

-13

-16

-19

-22

-25 20 Max.

-85

-84

-82

-80

-77

-73

-69 dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm

Typ.

-20 Min.

7 8) 54Mbps (PER 10%) 6 Maximum Input Level (PER 10%)

-20

-65

dBm dBm SKI.WB638BU.2_668BU 9.3 IEEE 802.11n HT20 Section TX Characteristics Min. 2. Spectrum Mask @ target power 13 15 3. Constellation Error(EVM)@ target power Items Specification Mode Channel Data rate (MCS index) 1. Power Levels 1) For antenna port 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 4. Frequency Error RX Characteristics 5.Minimum Input Level Sensitivity

(each chain) 1) MCS0 (PER 10%) 2) MCS1 (PER 10%) 3) MCS2 (PER 10%) 4) MCS3 (PER 10%) 5) MCS4 (PER 10%) 6) MCS5 (PER 10%) 7) MCS6 (PER 10%) 8) MCS7 (PER 10%) 7. Maximum Input Level (PER 10%) Contents IEEE802.11n HT20 @ 2.4GHz OFDM CH1 to CH11 MCS0/1/2/3/4/5/6/7 Max. Unit Typ. 14

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-28 20 Max.

-82

-79

-77

-74

-70

-66

-65

-64

dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm dBm dBm

Typ.

-20 Min.

-20 QR-ZZPJ-017A 8 9.4 IEEE 802.11n HT40 Section SKI.WB638BU.2_668BU Items Specification Mode Channel Data rate (MCS index) TX Characteristics Min. 1. Power Levels (Calibrated) 1) For antenna port 2. Spectrum Mask @target power 1) at fc +/-22MHz 2) at fc +/-40MHz 3) at fc > +/-60MHz 3. Constellation Error(EVM)@ target power 13 15 Contents IEEE802.11n HT40 @ 2.4GHz OFDM CH3 to CH9 MCS0/1/2/3/4/5/6/7 Max. Unit Typ. 12

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-28 20 Max.

-79

-76

-74

-71

-67

-63

-62

-61

dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm dBm dBm

Typ.

-20 Min.

-20 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 4. Frequency Error RX Characteristics 5. Minimum Input Level Sensitivity

(each chain) 1) MCS0 (PER 10%) 2) MCS1 (PER 10%) 3) MCS2 (PER 10%) 4) MCS3 (PER 10%) 5) MCS4 (PER 10%) 6) MCS5 (PER 10%) 7) MCS6 (PER 10%) 8) MCS7 (PER 10%) 6. Maximum Input Level (PER 10%) QR-ZZPJ-017A 9 9.5 IEEE 802.11a Section Items Contents SKI.WB638BU.2_668BU Specification Mode Channel Data rate (MCS index) TX Characteristics Min. 1. Power Levels (Calibrated) 1) For antenna port 2. Spectrum Mask @target power 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 3. Constellation Error(EVM)@ target power 12 14 1) 6Mbps 2) 9Mbps 3) 12Mbps 4) 18Mbps 5) 24Mbps 6) 36Mbps 7) 48Mbps 8) 54Mbps 4 Frequency Error RX Characteristics 5 Minimum Input Level Sensitivity

(each chain) 1) 6Mbps (PER 10%) 2) 9Mbps (PER 10%) 3) 12Mbps (PER 10%) 4) 18Mbps (PER 10%) 5) 24Mbps (PER 10%) 6) 36Mbps (PER 10%) 7) 48Mbps (PER 10%) 8) 54Mbps (PER 10%) 6. Maximum Input Level (PER 10%) IEEE802.11a OFDM CH36 to CH165 6, 9, 12, 18, 24, 36, 48, 54Mbps Max. Typ. Unit 15

-20

-28

-40

-5

-8

-10

-13

-16

-19

-22

-25 20 Max.

-82

-81

-79

-77

-74

-70

-66

-65

dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm dBm dBm

Typ.

-20 Min.

-30 QR-ZZPJ-017A 10 9.6 IEEE 802.11n HT20 Section(5GHz) Items Contents SKI.WB638BU.2_668BU Specification Mode Channel Data rate (MCS index) TX Characteristics Min. 1. Power Levels (Calibrated) 1) For antenna port 2. Spectrum Mask @target power 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 3. Constellation Error(EVM)@ target power 11 13 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 4. Frequency Error RX Characteristics 6. Minimum Input Level Sensitivity

(each chain) 1) MCS0 (PER 10%) 2) MCS1 (PER 10%) 3) MCS2 (PER 10%) 4) MCS3 (PER 10%) 5) MCS4 (PER 10%) 6) MCS5 (PER 10%) 7) MCS6 (PER 10%) 8) MCS7 (PER 10%) 6. Maximum Input Level (PER 10%) IEEE802.11n HT20 @ 5GHz BPSK, QPSK, 16QAM, 64QAM and OFDM CH36 to CH165 MCS0/1/2/3/4/5/6/7 Max. Typ. Unit 17

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-28 20 Max.

-82

-79

-77

-74

-70

-66

-65

-64

dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm dBm dBm

Typ.

-20 Min.

-30 QR-ZZPJ-017A 11 9.7 IEEE 802.11n HT40 Section(5GHz) Items Contents SKI.WB638BU.2_668BU Specification Mode Channel Data rate (MCS index) TX Characteristics Min. 1. Power Levels (Calibrated) 1) For antenna port 2. Spectrum Mask @target power 1) at fc +/-21MHz 2) at fc +/-40MHz 3) at fc > +/-60MHz 3. Constellation Error(EVM)@ target power 11 13 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 4. Frequency Error RX Characteristics 7. Minimum Input Level Sensitivity

(each chain) 1) MCS0 (PER 10%) 2) MCS1 (PER 10%) 3) MCS2 (PER 10%) 4) MCS3 (PER 10%) 5) MCS4 (PER 10%) 6) MCS5 (PER 10%) 7) MCS6 (PER 10%) 8) MCS7 (PER 10%) 6. Maximum Input Level (PER 10%) IEEE802.11n HT40 @ 5GHz BPSK, QPSK, 16QAM, 64QAM and OFDM CH38 to CH163 MCS0/1/2/3/4/5/6/7 Max. Typ. Unit 16

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-28 20 Max.

-79

-76

-74

-71

-67

-63

-62

-61

dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm dBm dBm

Typ.

-20 Min.

-30 QR-ZZPJ-017A 12 9.8 IEEE 802.11ac Section(5GHz) Items Contents SKI.WB638BU.2_668BU Specification Mode Channel Data rate (MCS index) TX Characteristics 1. Power Levels (Calibrated) 1) For antenna port 2. Spectrum Mask @VHT20/VHT40/VHT80 target power 1) at fc +/-11MHz/21MHz/41MHz 2) at fc +/-20MHz/40MHz/80MHz 3) at fc +/-30MHz/60MHz/120MHz 3. Constellation Error(EVM)@ target power

Min. Typ. Min. Typ. 11 13 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 9) MCS8 10) MCS9 4. Frequency Error RX Characteristics 5.Minimum Input Level Sensitivity

(each chain) 1) MCS0 (PER 10%) 2) MCS1 (PER 10%) 3) MCS2 (PER 10%) 4) MCS3 (PER 10%) 5) MCS4 (PER 10%) 6) MCS5 (PER 10%) 7) MCS6 (PER 10%) QR-ZZPJ-017A 13 IEEE802.11ac BPSK, QPSK, 16QAM, 64QAM ,256QAM and OFDM CH36 to CH165 VHT20 CH38 to CH163 VHT40 CH42 to CH157 VHT80 MCS0/1/2/3/4/5/6/7/8/9 Remar k Max. Max. 18

-20

-28

-40

-5

-10

-13

-16

-19

-22

-25

-27

-30

-32 20 Max. VHT 40

-79

-76

-74

-71

-67

-63

-62 Unit Unit dBm dBr dBr dBr dB dB dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm dBm dBm dBm dBm VHT 20

-82

-79

-77

-74

-70

-66

-65 VHT 80

-76

-73

-71

-68

-64

-60

-59

Typ.

-20 Min.

8) MCS7 (PER 10%) 9) MCS8(PER 10%) 10) MCS9(PER 10%) 6. Maximum Input Level (PER 10%)

-30

-64

-59

-57

-58

-53

-51

-61

-56

-54

dBm dBm dBm dBm SKI.WB638BU.2_668BU Min. Remark 9.9 Bluetooth Section Items Specification Mode Number of Channel Frequency Band 1. Output Power 2. Gain step 3. Receiver sensitivity (BER 0.1%) 4. Maximum usable signal (BER 0.1%) 5. C/I co-channel (BER<0.1%) 6. C/I 1MHz (BER<0.1%) 7. C/I 2MHz (BER<0.1%) 8. C/I3MHz (BER<0.1%) 9. C/I Image channel (BER<0.1%) 10. C/I Image 1MHz (BER<0.1%) 11. Inter-modulation 12. Out-of-band blocking 1). 30MHz to 2000MHz 2). 2000MHz to 2399MHz 3). 2498MHz to 3000MHz 4). 3000MHz to 12.75GHz 13. Modulation characteristics 1). f1avg 2). f2max (For at least 99.9% of all f2max) 3). f1avg /f2avg 14. ICFT 15. Carrier frequency drift 1). One slot packet (DH1) 2). Two slot packet (DH3) 3). Five slot packet (DH5) 4). Max drift rate 16. TX output spectrum(20dB bandwidth) 17. In-Band spurious emission 1). 2MHz offset 2

-10

-27

-27

-10 140 115 0.8

-75

-25

-40

-40

14 QR-ZZPJ-017A Contents BT2.1+EDR/4.2/5.0 FHSS,GFSK,DPSK,DQPSK 79 Channels 2.402 GHz ~2.480GHz Unit dBm dB dBm Typ. 4 4

-93.5

-5 4

-14

-42

-49

-25

-50

-13

157 140 0.98 20 15 15 15 6 922 Max.

8

-80

11 0

-30

-40

-9

-20

175

+75

+25

+40

+40 20 1000 dB dB dB dB dB dB dB dBm dBm dBm dBm KHz KHz KHz KHz KHz KHz KHz KHz/50us KHz

-45

-20 dBm 2). 3MHz offset 3). >3MHz offset

-48

-48

-40

-40 dBm dBm SKI.WB638BU.2_668BU 9. Mechanical,Environmental and Reliability Tests Test Items Test Conditions Qty Criteria Condition 10-1 Drop test 760mm(0.5~9.5kg 1xBox After test, the outer box and inner box will not been broken by appearance visual inspection, and the products should be ok. The packed samples was tested at below condition:

Drop height:

610mm(9.5~18.5kg) Drop time: 1x corner, 3x edge and 6x face. X-Y-Z direction, first 10-2 Vibration test Frequency changing from After test, the outer box and inner box 10Hz to 30Hz to will not been broken by appearance 1xBox visual inspection and the products should be ok. 10Hz,amplitude 2.0mm, 5 times vibrations, 5x times vibration. Soldering Soldering 10-3 ability test

(Only for SKI module) temperature:

2455 Soldering duration:

30.5S High Temperature and Humidity Operation Test Low 10-4 10-5 Temperature Operation Test Leave samples in 60, 90%

RH @ 24 hours Leave samples in -15

@24 hours 1.After soldering, the soldered area must be covered by a smooth bright solder layer, some deficiencies such as a small amount of the pinhole, not wetting are allowed, but the deficiencies can not be in the same place 2. At least 90% of soldered area shall be covered continuously by the soldering material. After test, the products appearance, power, EVM and frequency error functional parameter shall be satisfied with the test specification. After test, the products appearance, power, EVM and frequency error functional parameter shall be satisfied with the test specification. 3 4 4 QR-ZZPJ-017A 15 10-6 10-7 10-8 10-9 High Temperature and Humidity Start Test Low temperature start test High Temperature and Humidity Storage Test Low Temperature Storage Test Leave samples in 60, 90% RH for 4x hours Leave samples in -15 for 4x hours Leave samples in 85, 95%

RH @ 48 hours Leave samples in -40,

@48 hours 10-10 Thermal Shock Test

-40~85dwell time 30min50cycles 10-11 Aging Test 60120Hrs 10-12 Salt spray test NSS,35C,PH:6.5~7.224H Discharge voltage:

1kV C: 50pF Discharge resistance330 Positive10 times 1 time for each second SKI.WB638BU.2_668BU 4 4 4 4 4 After test, power on and off the samples for 3x tiems, the samples should be able to start normally After test, power on and off the samples for 3x tiems, the samples should be able to start normally After test, the products appearance, power, EVM and frequency error functional parameter shall be satisfied with the test specification. After test, the products appearance, power, EVM and frequency error functional parameter shall be satisfied with the test specification. After test, the products appearance, power, EVM and frequency error functional parameter shall be satisfied with the test specification. 10 2 The products at high temperature for a long time can continuous work normally The Sample shall has no minor or major defects, such as physical damage, crack, corrosion, deformation etc;

10-13 ESD 3 The products can recoverable smoothly after ESD test. QR-ZZPJ-017A 16 SKI.WB638BU.2_668BU 10. Package 11. Software Requirements The driver supports the following operating systems: Microsoft Windows XP, Vista and Win7. Windows XPVista win7 QR-ZZPJ-017A 17

FCC Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Caution: The user is cautioned that changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. FCC RF Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and any part of your body. The device must be professionally installed The intended use is generally not for the general public.It is generally for industry/commercial use. The connector is within the transmitter enclosure and can only be accessed by disassembly of the transmitter that is not normally required. the user has no access to the connector. Installation must be controlled. Installation requires special training This module has been assessed against the following FCC rule parts: CFR 47 FCC Part 15 C (15.247, DTS and DSS) and CFR 47 FCC Part 15 E (NII). It is applicable to the modular transmitter This radio transmitter 2AR82-SKIWB668BU2has been approved by Federal Communications Commission to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain indicated for any type listed are strictly prohibited for use with this device. The concrete contents to check are the following three points.

) Must use following one of the three antenna.

) Should be installed so that the end user cannot modify the antenna;

) Feed line should be designed in 50ohm Fine tuning of return loss etc. can be performed using a matching network. Original antenna information Antenna BT Frequency (MHz) Antenna Type MAX Antenna Gain (dBi) 2402-2480 PCB Antenna 3.94 New antenna information KTC ANTENNA:

INNO-LINK ANTENNA:

Antenna 1(BT) Antenna 1(BT) KTC ANTENNA:

1(WIFI0) 2(WIFI1) INNO-LINK ANTENNA:

1(WIFI0) 2(WIFI1) KTC ANTENNA:

Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) 1(WIFI0) 2(WIFI1) 2412-2462 2412-2462 PCB Antenna PCB Antenna 3.70 4.94 Antenna No. Frequency Band Antenna Type Max Antenna Gain (dBi) 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) UNII1 UNII1 UNII-2A UNII-2A UNII-2C UNII-2C UNII3 UNII3 PIFA PIFA PIFA PIFA PIFA PIFA PIFA PIFA 2.87 2.53 3.45 2.75 5.45 4.88 5.2 4.53 Frequency (MHz) Antenna Type MAX Antenna Gain (dBi) 2402-2480 Dipole Antenna 3.5 Frequency (MHz) Antenna Type MAX Antenna Gain (dBi) 2402-2480 Dipole Antenna 2.44 Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) 2412-2462 2412-2462 Dipole Antenna Dipole Antenna 2412-2462 2412-2462 Dipole Antenna Dipole Antenna Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) 1(WIFI0) 2(WIFI1) UNII-1&UNII-2A&

UNII-3C&UNII-3 UNII-1&UNII-2A&

UNII-3C&UNII-3 Dipole Antenna Dipole Antenna 3.5 3.5 2.44 2.44 5 5 Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) UNII-1&UNII-2A&

UNII-3C&UNII-3 UNII-1&UNII-2A&

UNII-3C&UNII-3 Dipole Antenna Dipole Antenna 5.2 5.2 INNO-LINK ANTENNA:

1(WIFI0) 2(WIFI1) Canada Statement This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canadas licence-exempt RSS(s). Operation is subject to the following two conditions:

(1) This device may not cause interference.

(2) This device must accept any interference, including interference that may cause undesired operation of the device. L'metteur/rcepteur exempt de licence contenu dans le prsent appareil est conforme aux CNR d'Innovation, Sciences et Dveloppement conomique Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes :

1)L'appareil ne doit pas produire de brouillage;

2)L'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. The device for operation in the band 51505250 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile satellite systems Les dispositifs fonctionnant dans la bande de 5 150 5 250 MHz sont rservs uniquement pour une utilisation lintrieur afin de rduire les risques de brouillage prjudiciable aux systmes de satellites mobiles utilisant les mmes canaux. Please notice that if the ISED certification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the the following: Contains IC:

label can use wording such as enclosed module. This exterior 24728-SKIWB668BU2 any similar wording that expresses the same meaning may be used. l'appareil hte doit porter une tiquette donnant le numro de certification du module d'Industrie Canada, prc d des mots Contient un module d'mission , du mot IC: 24728-SKIWB668BU2 ou d'une formulation similaire exprimant le mme sens, comme suit The device meets the exemption from the routine evaluation limits in section 2.5 of RSS 102 and compliance with RSS-102 RF exposure, users can obtain Canadian information on RF exposure and compliance. Le dispositif rencontre l'exemption des limites courantes d'valuation dans la section 2.5 de RSS 102 etla conformit l'exposition de RSS-102 rf, utilisateurs peut obtenir l'information canadienne surl'exposition et la conformit de rf. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body. Cet metteur ne doit pas tre Co-plac ou ne fonctionnant en mme temps qu'aucune autre antenne oumetteur. Cet quipement devrait tre install et actionn avec une distance minimum de 20 centimtres entre le radiateur et votre corps. This radio transmitter 24728-SKIWB668BU2 has been approved by Innovation, Science and Economic Development Canada to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain Le prsent metteur radio 24728-SKIWB668BU2 a t approuv par Innovation, Sciences et Dveloppement conomique Canada pour fonctionner avec les types d'antenne numrs ci-dessous et ayant un gain admissible maximal. Les types d'antenne non inclus dans cette liste, et dont le gain est suprieur au gain maximal indiqu pour tout type figurant sur la liste, sont strictement interdits pour l'exploitation de l'metteur. The concrete contents to check are the following three points.

) Must use following one of the three antenna

) Should be installed so that the end user cannot modify the antenna;

) Feed line should be designed in 50ohm Fine tuning of return loss etc. can be performed using a matching network. Le contenu concret vrifier sont les trois points suivants.

) i l doit utiliser suivant de l'antenne.

) doivent tre installs de faon que l'utilisateur final ne peut pas modifier l'antenne

) La ligne dalimentation doit tre conue en 50ohm Le rglage prcis de la perte de rendement, etc. peut tre effectu en utilisant un rseau correspondant. Informations brutes sur l'antenne Frequency (MHz) frquences 2402-2480 Antenna Type types d'antenne PCB Antenna MAX Antenna Gain (dBi) Gain maximal d'antenne 3.94 Frequency (MHz) frquences 2412-2462 Antenna Type types d'antenne PCB Antenna MAX Antenna Gain (dBi) Gain maximal d'antenne 3.70 2412-2462 PCB Antenna 4.94 Antenna No. 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) Frequency (MHz) frquences 2412-2462 Antenna Type types d'antenne PIFA Max Antenna Gain (dBi) Gain maximal d'antenne 2.87 UNII1 UNII-2A UNII-2A UNII-2C UNII-2C UNII3 UNII3 PIFA PIFA PIFA PIFA PIFA PIFA PIFA 2.53 3.45 2.75 5.45 4.88 5.2 4.53 Antenna d'antenne BT Antenna d'antenne 1(WIFI0) 2(WIFI1) Antenne Inno - link:

Antenna d'antenne 1(BT) Antenne KTC:

Antenna d'antenne 1(WIFI0) Antenne Inno - link:

Antenna d'antenne 1(WIFI0) 2(WIFI1) Antenne KTC:

Antenne Inno - link:

Nouvelles informations sur l'antenne Antenne KTC:

Antenna d'antenne 1(BT) Frequency (MHz) frquences 2402-2480 Antenna Type types d'antenne Dipole Antenna MAX Antenna Gain (dBi) Gain maximal d'antenne 3.5 Frequency (MHz) frquences 2402-2480 Antenna Type types d'antenne Dipole Antenna MAX Antenna Gain (dBi) Gain maximal d'antenne 2.44 Frequency (MHz) frquences 2412-2462 Antenna Type types d'antenne PCB Antenna MAX Antenna Gain (dBi) Gain maximal d'antenne 3.5 2(WIFI1) 2412-2462 PCB Antenna 3.5 Frequency (MHz) frquences 2412-2462 Antenna Type types d'antenne PCB Antenna MAX Antenna Gain (dBi) Gain maximal d'antenne 2.44 2412-2462 PCB Antenna 2.44 Antenna No. 1(WIFI0) 2(WIFI1) Frequency (MHz) frquences UNII-1&UNII-2A&

UNII-3C&UNII-3 UNII-1&UNII-2A&

UNII-3C&UNII-3 Antenna No. 1(WIFI0) 2(WIFI1) Frequency (MHz) frquences UNII-1&UNII-2A&

UNII-3C&UNII-3 UNII-1&UNII-2A&

UNII-3C&UNII-3 Antenna Type types d'antenne PCB Antenna PCB Antenna Antenna Type types d'antenne PCB Antenna PCB Antenna Max Antenna Gain (dBi) Gain maximal d'antenne Max Antenna Gain (dBi) Gain maximal d'antenne 5 5 5.2 5.2 Notice to OEM integrator Must use the device only in host devices that meet the FCC/ISED RF exposure category of mobile, which means the device is installed and used at distances of at least 20cm from persons. The end user manual shall include FCC Part 15 /ISED RSS GEN compliance statements related to the transmitter as show in this manual. Host manufacturer is responsible for compliance of the host system with module installed with all other applicable requirements for the system such as Part 15 B, ICES 003. Host manufacturer is strongly recommended to confirm compliance with FCC/ISED requirements for the transmitter when the module is installed in the host. Must have on the host device a label showing Contains FCC ID: 2AR82-SKIWB668BU2IC: 24728-SKIWB668BU2 The use condition limitations extend to professional users, then instructions must state that this information also extends to the host manufacturers instruction manual. This module is stand-alone modular. If the end product will involve the Multiple simultaneously transmitting condition or different operational conditions for a stand-alone modular transmitter in a host, host manufacturer have to consult with module manufacturer for the installation method in end system. Installer should put it in the manual The device for operation in the band 51505250 MHz is only for indoor use to reduce the potential for harmful interference to co-channel mobile satellite systems l'hte doit utiliser l'instrument uniquement dans des dispositifs qui rpondent la fcc / (catgorie d'exposition rf mobile, ce qui signifie le dispositif est install et utilis une distance d'au moins 20 cm de personnes. le manuel de l'utilisateur final doit inclure la partie 15 / (fac rss gen dclarations de conformit relatives l'metteur que de montrer dans ce manuel. le fabricant est responsable de la conformit de l'hte, le systme d'accueil avec le module install avec toutes les autres exigences applicables du systme comme la partie 15 b, ices - 003. accueillir le fabricant est fortement recommand de confirmer la conformit avec les exigences de la fcc /

(metteur lorsque le module est install dans l'hte. le dispositif d'accueil doivent avoir une tiquette indiquant contient FCC ID:2AR82-SKIWB668BU2IC:

24728-SKIWB668BU2 Les personnes charges de l'installation devraient figurer dans le manuel:

Les dispositifs fonctionnant dans la bande de 5 150 5 250 MHz sont rservs uniquement pour une utilisation lintrieur afin de rduire les risques de brouillage prjudiciable aux systmes de satellites mobiles utilisant les mmes canaux.

SKILWB638BU.2 668BU MAC:;

1C:24728-SKIWB668BU2 FCC ID:2AR82-SKIWB668BU2 SKI.WB638BU.2 668BU. MAC:XXXXXXXXXXXX 1C:24728-SKIWB668BU2 FCC ID:2AR82-SKIWB668BU2

Guangzhou Shikun Electronics Co., Ltd Date: 2021/03/24 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 To whom it may concern:

I, the undersigned, hereby authorize UL Verification Services Inc. to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by UL Verification Services Inc. on our behalf shall have the same effect as acts of our own. I, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). In authorizing UL Verification Services Inc. as our representative, we still recognize that we are responsible to:

a) b) c) d) e) f) comply with the relevant provisions of the certification program;

make all necessary arrangements for the conduct of the evaluation, including provision for examining documentation and access to all areas, records (including internal audit reports) and personnel for the purposes of evaluation (e.g. testing, inspection, assessment, surveillance, reassessment) and resolution of complaints;

make claims regarding certification only in respect of the scope for which certification has been granted;

do not use our product certification in such a manner as to bring the Certification Division into disrepute and not make any statement regarding our product certification which the Certification Division may consider misleading or unauthorized;

upon suspension or cancellation of certification, discontinue use of all advertising matter that contains any reference thereto and return any certification documents as required by the Certification Division;

use certification only to indicate the products are certified as being in conformity with specified standards;

g) endeavor to ensure that no certificate or report nor any part thereof is used in a misleading manner;

h) ensure that any reference to our product certification in communication media such as documents, brochures or advertising, complies with the requirements of the Certification Division;

i) keep a record of all complaints made known to us relating to the products compliance with requirements of the relevant standard and to make these records available to the when requested;

j) take appropriate action with respect to such complaints and any deficiencies found in products or services that affect compliance with the requirements for certification;

k) document the actions taken. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signed by:

Company Name: Guangzhou Shikun Electronics Co., Ltd Contact Name: Bing Yi Title of Person: Certification Manager Address: NO.6 Liankun Road,Huangpu District Guangzhou 510530 China

Guangzhou Shikun Electronics Co., Ltd Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Attn: OET Dept. Ref:

FCC Class II Permissive Change for FCC ID: 2AR82-SKIWB668BU2

(Original Grant date: 06/10/2020) Applicant: Guangzhou Shikun Electronics Co., Ltd Dear Examiner, This is to request a Class II permissive change for FCC ID: 2AR82-SKIWB668BU2, originally granted on 06/10/2020 The change file under this application is:

1,The power will be reduced 2,The antenna will be changed Original Antenna information Antenna Frequency (MHz) Antenna Type MAX Antenna Gain (dBi) BT 2402-2480 PCB Antenna 3.94 Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) 1(WIFI0) 2(WIFI1) 2412-2462 PCB Antenna 2412-2462 PCB Antenna 3.70 4.94 Antenna No. Frequency Band Antenna Type Max Antenna Gain

(dBi) 1(WIFI0) 2(WIFI1) UNII1 UNII1 1(WIFI0) UNII-2A PIFA PIFA PIFA 2.87 2.53 3.45 Guangzhou Shikun Electronics Co., Ltd 2(WIFI1) UNII-2A 1(WIFI0) UNII-2C 2(WIFI1) UNII-2C 1(WIFI0) 2(WIFI1) UNII3 UNII3 PIFA PIFA PIFA PIFA PIFA 2.75 5.45 4.88 5.2 4.53 New antenna information:

KTC ANTENNA:

Antenna Frequency (MHz) Antenna Type MAX Antenna Gain (dBi) 1(BT) 2402-2480 Dipole antenna 3.5 INNO-LINK ANTENNA:

Antenna Frequency (MHz) Antenna Type MAX Antenna Gain (dBi) 1(BT) 2402-2480 Dipole antenna 2.44 KTC ANTENNA:

Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) 1(WIFI0) 2(WIFI1) 2412-2462 Dipole antenna 2412-2462 Dipole antenna 3.5 3.5 INNO-LINK ANTENNA:

Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) 1(WIFI0) 2(WIFI1) 2412-2462 Dipole antenna 2412-2462 Dipole antenna 2.44 2.44 Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) Guangzhou Shikun Electronics Co., Ltd KTC ANTENNA:

1(WIFI0) 2(WIFI1) 1(WIFI0) 2(WIFI1) INNO-LINK ANTENNA:

UNII-1&UNII-2A&

UNII-3C&UNII-3 UNII-1&UNII-2A&

UNII-3C&UNII-3 Dipole antenna Dipole antenna UNII-1&UNII-2A&

UNII-3C&UNII-3 UNII-1&UNII-2A&

UNII-3C&UNII-3 Dipole antenna Dipole antenna 5 5 5.2 5.2 Antenna model Frequency (MHz) Antenna Type MAX. Antenna Gain (dBi) The IEEE 802.11b/g/n/a/ac 2T2R USB WiFi Module Integrated BT 2.1+EDR/4.2/5.0 already applied for FCC ID and the ID number is 2AR82-SKIWB668BU2. We performed measurement for Radiated Band Edges, Spurious Emission and conducted output power and applied C2PC base on this Module. If you have any questions regarding this application, please feel free to contact me. Best Regards, Company Name: Guangzhou Shikun Electronics Co., Ltd Contact Name: Bing Yi Title of Person: Certification Manager Address: NO.6 Liankun Road,Huangpu District Guangzhou 510530 China

Guangzhou Shikun Electronics Co., Ltd Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject:Request for Confidentiality FCC ID: 2AR82-SKIWB668BU2 To Whom It May Concern:

Pursuant to the provisions of Sections 0.457 and 0.459 of the Commissions rules (47 CFR 0.457, 0.459), we are requesting the Commission to withhold the following attachments as confidential document from public disclosure indefinitely. Theory of Operation Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Best Regards Company Name: Guangzhou Shikun Electronics Co., Ltd Contact Name: Bing Yi Title of Person: Certification Manager Address: NO.6 Liankun Road,Huangpu District Guangzhou 510530 China Date:2021/03/24

The module transmitter will be a single module Modular Approval Request FCC (Per 15.212) FCC ID: 2AR82-SKIWB668BU2 Items to be covered Answer From Applicant 1. The radio elements of the modular transmitter must have their own shielding. The physical crystal and tuning capacitors may be located external to the shielded radio elements. 2. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with part 15 requirements under conditions of excessive data rates or over-modulation. 3. The modular transmitter must have its own power supply regulation. 4. The modular transmitter must comply with the antenna and transmission system requirements of 15.203, 15.204(b) and 15.204(c). The antenna must either be permanently attached or employ a unique antenna coupler (at all connections between the module and the antenna, including the cable). The professional installation provision of 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph (b) of this section. 5. The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing for compliance with part 15 requirements. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in 15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will be marketed with the module (see 15.27(a)). The length of these lines shall be the length typical of actual use or, if that length is unknown, at least 10 centimeters to insure that there is no coupling between the case of the module and supporting equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified and commercially available (see 15.31(i)). 6. The modular transmitter must be equipped with either a permanently affixed label or must be capable of electronically displaying its FCC identification number. Yes Yes Yes Yes Yes Yes

(A) If using a permanently affixed label, the modular transmitter must be labeled with its own FCC identification number, and, if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains Transmitter Module FCC ID: XYZMODEL1 or Contains FCC ID: XYZMODEL1. Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization.

(B) If the modular transmitter uses an electronic display of the FCC identification number, the information must be readily accessible and visible on the modular transmitter or on the device in which it is installed. If the module is installed inside another device, then the outside of the device into which the module is installed must display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains FCC certified transmitter module(s). Any similar wording that expresses the same meaning may be used. The user manual must include instructions on how to access the electronic display. A copy of these instructions must be included in the application for equipment authorization. 7. The modular transmitter must comply with any specific rules or operating requirements that ordinarily apply to a complete transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment authorization. 8. Radio frequency devices operating under the provisions of this part are subject to the radio frequency radiation exposure requirements specified in 1.1307(b), 1.1310, 2.1091, and 2.1093 of this chapter, as appropriate. Applications for equipment authorization of modular transmitters under this section must contain a statement confirming compliance with these requirements. The modular transmitter must comply with any applicable RF exposure requirements in its final configuration. Technical information showing the basis for this statement must be submitted to the Commission upon request. Yes Yes Note: If compliance with one or more of the numbered requirements, listed above, cannot be demonstrated, it may be possible to obtain a Limited Modular Approval (LMA). ___________________________ Bing Yi Title: Certification Manager Guangzhou Shikun Electronics Co., Ltd

Guangzhou Shikun Electronics Co., Ltd Date: 2020/5/20 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 To whom it may concern:

I, the undersigned, hereby authorize UL Verification Services Inc. to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by UL Verification Services Inc. on our behalf shall have the same effect as acts of our own. I, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). In authorizing UL Verification Services Inc. as our representative, we still recognize that we are responsible to:

a) comply with the relevant provisions of the certification program;

b) make all necessary arrangements for the conduct of the evaluation, including provision for examining documentation and access to all areas, records (including internal audit reports) and personnel for the purposes of evaluation (e.g. testing, inspection, assessment, surveillance, reassessment) and resolution of complaints;

c) make claims regarding certification only in respect of the scope for which certification has been granted;

d) do not use our product certification in such a manner as to bring the Certification Division into disrepute and not make any statement regarding our product certification which the Certification Division may consider misleading or unauthorized;

e) upon suspension or cancellation of certification, discontinue use of all advertising matter that contains any reference thereto and return any certification documents as required by the Certification Division;

f) use certification only to indicate the products are certified as being in conformity with specified standards;

g) endeavor to ensure that no certificate or report nor any part thereof is used in a misleading manner;

h) ensure that any reference to our product certification in communication media such as documents, brochures or advertising, complies with the requirements of the Certification Division;

i) keep a record of all complaints made known to us relating to the products compliance with requirements of the relevant standard and to make these records available to the when requested;

j) take appropriate action with respect to such complaints and any deficiencies found in products or services that affect compliance with the requirements for certification:

k) document the actions taken. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signed by:

Blag 3 Company Name: Guangzhou Shikun Electronics Co., Ltd Contact Name: Bing Yi Title of Person: Certification Manager Address: NO.6 Liankun Road,Huangpu District Guangzhou 510530 China

Guangzhou Shikun Electronics Co., Ltd Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject:Request for Confidentiality FCC ID: 2AR82-SKIWB668BU2 To Whom It May Concern:

Pursuant to the provisions of Sections 0.457 and 0.459 of the Commissions rules (47 CFR 0.457, 0.459), we are requesting the Commission to withhold the following attachments as confidential document from public disclosure indefinitely. Schematic Diagram Block Diagram Theory of Operation Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Best Regards Br ne) 6 Company Name: Guangzhou Shikun Electronics Co., Ltd Contact Name: Bing Yi Title of Person: Certification Manager Address: NO.6 Liankun Road,Huangpu District Guangzhou 510530 China Date:2020/05/20

Modular Approval Request FCC (Per DA 00-1407) FCC ID: 2AR82-SKIWB668BU2 Items to be covered Answer From Applicant 1. The modular transmitter must have its own RF shielding. Yes 2. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with Part 15 requirements under conditions of excessive data rates or over-

modulation. Yes 3. The modular transmitter must have its own power supply regulation. Yes 4. The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204(c). The antenna must either be permanently attached or employ a "unique" antenna coupler (at all connections between the module and the antenna, including the cable). Yes 5. The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing. This is intended to demonstrate that the module is capable of complying with Part 15 emission limits regardless of the device into which it is eventually installed. Yes 6. The modular transmitter must be labeled with its own FCC ID number, and, if the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: "Contains Transmitter Module FCC ID: XYZMODEL1" or "Contains FCC ID: XYZMODEL1."

Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization. Yes 7. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment authorization. For example, there are very strict operational and timing requirements that must be met before a transmitter is authorized for operation under Section 15.231. For instance, data transmission is prohibited, except for operation under Section 15.231(e), in which case there are separate field strength level and timing requirements. Compliance with these requirements must be assured. Yes 8. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 2.1091, 2.1093 and specific Sections of Part 15,including 15.319(i), 15.407(f), 15.253() and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum transmitters operating under Section 15.247 are required to address RF Exposure compliance in accordance with Section 15.247(b) (4). Modular transmitters approved under other Sections of Part 15,when necessary, may also need to address certain RF Exposure concerns, typically by providing specific installation and operating instructions for users, installers and other interested parties to ensure compliance. Yes Note: If compliance with one or more of the numbered requirements, listed above, cannot be demonstrated, it may be possible to obtain a Limited Modular Approval (LMA). Bing Yi Title: Certification Manager Guangzhou Shikun Electronics Co., Ltd