FCC ID: 2AOKI-WFR12CUWD2 WF-R12C-UWD2L, WF-R12C-UWD3L

Supported WLAN Standard WF-R12C-UWD2L Features IEEE Std. 802.11a IEEE Std. 802.11b IEEE Std. 802.11g IEEE Std. 802.11n IEEE Std. 802.11ac Chip Solution Realtek RTL8812CU-VR Size 30.0mm x47.0mm x 6.0mm Interface Assemble Band USB Screwing 2.4G/5G 3.3V Power supply Antenna One External Antennas One Internal Antennas Sichuan AI-Link Technology Co.,Ltd. Add:

Anzhou,Industrial park,Mianyang,Sichuan TEL : +86-13881190925 Emailshengwu.chang@changhong.com

:http://www.ailinkiot.com WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module Feedback of customers Confirmation We accept the specification after Confirmed Customer name Customer signature Confirmation Date Please feed back this paper and first paper after your signature by the address,thanks!

ADDAnzhou,Industrial park,Mianyang,Sichuan FactorySichuan AI-Link Technology Co.,Ltd. Approved Checked Product Designed WiFi Module WF-R12C-UWD2L 2021-05-18 Sichuan AI-Link Technology Co.,Ltd. page 2 of 18 Model Date WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module Record of Modification Version Date Main content of modification V1.0 2021/05/18 First release Confirm Sichuan AI-Link Technology Co.,Ltd. page 3 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 1. Introduction WF-R12C-UWD2L module design is based on Realtek RTL8812CU-VR solution, The RTL8812CU-VR is a highly integrated single chip which has built in a 2x2 dual-band wireless LAN radio. The Module is a highly integrated MAC/BBP and 2.4/5GHz PA/LNA single chip which supports a 866.7Mbps PHY rate. The Module is designed to support standard-based features in the areas of security, quality of service, and international regulations, giving end users the greatest performance anytime and in any circumstance. This documentation describes the engineering requirements specification. 1.1 RF module Overview The general HW architecture for the module is shown in Figure 1. This WLAN Module design is based on Realtek RTL8812CU-VR. It is a highly integrated single-chip MIMO(Multiple In Multiple Out) Wireless LAN (WLAN) network interface controller complying with the 802.11 specification over USB interface. It combines a MAC, a 2T2R capable baseband, and RF in a single chip. An intelligent Wi-Fi coexistence algorithm is implemented to provide the best harmonized Wi-Fi performance. Figure 1 WF-R12C-UWD2L Block Diagram 1.2 Specification reference This specification is based on additional references listed below. _ IEEE Std. 802.11a _ IEEE Std. 802.11b _ IEEE Std. 802.11g _ IEEE Std. 802.11n _ IEEE Std. 802.11ac Sichuan AI-Link Technology Co.,Ltd. page 4 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 1.3 System Functions Table1: General Specification as below:

Main Chipset Operating Frequency WiFi Standard Modulation Realtek RTL8812CU-VR 2.4G/5G 802.11a/b/g/n/ac (2x2) WIFI:11b: DBPSK, DQPSK, CCK for DSSS 11a/g: BPSK, QPSK, 16QAM, 64QAM for OFDM 11n: BPSK, QPSK, 16QAM, 64QAM for OFDM 11ac: BPSK, QPSK, 16QAM, 64QAM,256QAM for OFDM Data rates Form factor Host Interface PCB Stack Dimension Antenna Operation Temperature Storage Temperature Operation Voltage Power Consumption 11b: 1, 2, 5.5 and 11Mbps 11a/g: 6, 9, 12, 18, 24, 36, 48 and 54 Mbps 11n: MCS0~15, up to 300Mbps 11ac: MCS0~9, Nss=2, up to 866.7Mbps 10pins USB 2.0 4-layers design Typical30.0mm x47.0mm x 6.0mm One External Antennas, One Internal Antennas Design 0 to +60

-40 to +80 3.3V +/-10%

1000mA Max Sichuan AI-Link Technology Co.,Ltd. page 5 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 2. Mechanical Specification 2.1 Mechanical Outline Drawing Typical Dimension (W x L ):30.0mmx 47.0mm x 6.0mm General tolerance: 0.3mm 2.2 Pin define Pin 1 2 3 4 5 6 7 8 9 10 Define Vcc Vcc USB DM USB DP GND WOWn RST GND HST_WAKE_WL GND Description 3.3V 3.3V USB D-

USB D+

GND WL_WAKE_HOST Pdn GND HST_WAKE_WL GND Sichuan AI-Link Technology Co.,Ltd. page 6 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 2.3 Product Picture TOP VIEW BOTTOM VIEW Sichuan AI-Link Technology Co.,Ltd. page 7 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 3. Electrical Specification This Specification is based-on conductive DVT testing result. The extreme condition include overall temperature (0,+25,+40) and overall voltage (3.0V,3.3V,3.6V). 3.1 IEEE 802.11b Section:

Items Specification Mode Channel Data rate TX Characteristics 1. Power Levels(Calibrated) 1) 16dBm Target (For Each antenna port)

@11Mbps 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 5. Minimum Input Level Sensitivity(each chain) 1) 1Mbps (FER 8%) 2) 11Mbps (FER 8%) 6. Maximum Input Level (FER 8%) Contents IEEE802.11b DBPSK, DQPSK and CCK and DSSS CH1 to CH13 1, 2, 5.5, 11Mbps Max. Typ. Unit Remark 16

-20

Typ.

-88

-82

19

-30

-50

-10

-10

-10

-10

-15 Max.

dBm dBr dBr dB dB dB dB ppm Unit dBm dBm dBm Min. 13

-15 Min.

-10 Sichuan AI-Link Technology Co.,Ltd. page 8 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 3. 2 IEEE 802.11g/a Section:

Items Specification Mode Channel Data rate TX Characteristics 1. Power Levels 1) 14dBm Target (For Each antenna port) 2) 14dBm Target (For Each antenna port)

@ 11g 54Mbps

@ 11a 54Mbps 2. Spectrum Mask @ Target Power 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 3. Constellation Error(EVM) @ Target Power 1) 6Mbps 2) 9Mbps 3) 12Mbps 4) 18Mbps 5) 24Mbps 6) 36Mbps 7) 48Mbps 8) 54Mbps 4. Frequency Error 1) IEEE802.11g 2) IEEE802.11a RX Characteristics 5. Minimum Input Level Sensitivity(each chain) 1) 6Mbps (PER 10%) 2) 54Mbps (PER 10%) 6. Maximum Input Level (PER 10%) 1) IEEE802.11g 2) IEEE802.11a Min. 13 13

-15

-15 Min.

-20

-30 Contents IEEE802.11g & IEEE802.11a BPSK, QPSK, 16QAM, 64QAM and OFDM CH1 to CH13 @ 11g CH36 to CH48; CH149 to CH165 @ 11a 6, 9, 12, 18, 24, 36, 48, 54Mbps Max. Typ. Unit Remark 16 16

Typ.

-86

-73

19 19

-20

-28

-40

-5

-8

-10

-13

-16

-19

-22

-25

-15

-15 Max.

dBm dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm ppm Unit dBm dBm dBm dBm Sichuan AI-Link Technology Co.,Ltd. page 9 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 3.3 IEEE 802.11n HT20 Section:

Items Specification Mode Channel Data rate (MCS index) TX Characteristics 1. Power Levels 1) 12dBm Target (For Each antenna port) 2) 12dBm Target (For Each antenna port)

@ 2.4G MCS7

@ 5G MCS7 2. Spectrum Mask @ Target Power 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 3. Constellation Error(EVM) @ Target Power 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 4. Frequency Error 1) IEEE802.11n HT20 @ 2.4G 2) IEEE802.11n HT20 @ 5G RX Characteristics 5. Minimum Input Level Sensitivity(each chain) 1) MCS0 (PER 10%) 8) MCS7 (PER 10%) 6. Maximum Input Level (PER 10%) 1) IEEE802.11n HT20 @ 2.4G 2) IEEE802.11n HT20 @ 5G Contents IEEE802.11n HT20 @ 2.4G IEEE802.11n HT20 @ 5G BPSK, QPSK, 16QAM, 64QAM and OFDM CH1 to CH13 @ 2.4G CH36 to CH48; CH149 to CH165@ 5G MCS0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15 Max. Typ. Unit Remark Min. 12 12

-15

-15 Min.

-20

-30 15 15

Typ.

-86

-70

18 18

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-27

-15

-15 Max.

dBm dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm ppm Unit dBm dBm dBm dBm Sichuan AI-Link Technology Co.,Ltd. page 10 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 3.4 IEEE 802.11n HT40 Section:

Items Specification Mode Channel Data rate (MCS index) TX Characteristics 1. Power Levels (Calibrated) 1) 12dBm Target (For Each antenna port) 2) 12dBm Target (For Each antenna port)

@ 2.4G MCS7

@ 5G MCS7 2. Spectrum Mask @ Target Power 1) at fc +/-21MHz 2) at fc +/-40MHz 3) at fc > +/-60MHz 3. Constellation Error(EVM) @ Target Power 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 4. Frequency Error 1) IEEE802.11n HT40 @ 2.4G 2) IEEE802.11n HT40 @ 5G RX Characteristics 5. Minimum Input Level Sensitivity(each chain) 1) MCS0 (PER 10%) 2) MCS7 (PER 10%) 6. Maximum Input Level(PER 10%) 1) IEEE802.11n HT40 @ 2.4G 2) IEEE802.11n HT40 @ 5G Contents IEEE802.11n HT40 @ 2.4G IEEE802.11n HT40 @ 5G BPSK, QPSK, 16QAM, 64QAM and OFDM CH3 to CH11 @ 2.4G CH38 to CH46; CH151 to CH163 @ 5G MCS0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15 Max. Typ. Unit Remark Min. 12 12

-15

-15 Min.

-20

-30 15 15

Typ.

-83

-66

18 18

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-27

-15

-15 Max.

dBm dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm ppm Unit dBm dBm dBm dBm Sichuan AI-Link Technology Co.,Ltd. page 11 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 3.5 IEEE 802.11ac Section:

Items Specification Mode Channel Data rate (MCS index) TX Characteristics 1. Power Levels (Calibrated) 1) 11dBm Target (For Each antenna port)

@VHT20/VHT40/VHT80 MCS7 2. Spectrum Mask @ Target Power 1) at fc +/-11MHz /20MHz/30MHz 2) at fc +/-21MHz /40MHz/60MHz 3) at fc +/-41MHz /80MHz/120MHz 3. Constellation Error(EVM) @ Target Power 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) MCS8 (PER 10%) 2) MCS9 (PER 10%) 6. Maximum Input Level(PER 10%) Min.

-15 Min.

-30 Contents IEEE802.11ac BPSK, QPSK, 16QAM, 64QAM ,256QAM and OFDM CH36 to CH48; CH149 to CH165 @VHT20 CH38 to CH46; CH151 to CH163 @VHT40 CH42;CH155 @VHT80 MCS0/1/2/3/4/5/6/7/8/9 Max. Typ. Unit Remark 12 15 18

Typ.

-20

-28

-40

-5

-10

-13

-16

-19

-22

-25

-27

-30

-32

-15 Max. VHT20 VHT40 VHT80

-61

-64

-58 dBm dBr dBr dBr dB dB dB dB dB dB dB dB dB dB ppm Unit dBm dBm dBm 4. Software Requirements The driver supports the following operating systems: Linux, Microsoft Windows XP, Vista and Win7. Mfg. software tool is Win7_MP_Kit_RTL11ac_8822CU_USB_v8.04_20200416. Sichuan AI-Link Technology Co.,Ltd. page 12 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 5. External Antenna specification NO. Type Antenna Project Code Part No. RFMTA3706**IMLB701 SLK-T3010-L-**-B Metal Antenna RFMTA170900NNLB003 1 2 External PIFA Antenna PIFA Antenna 3 Onboard PIFA Antenna

**= Cable Length 6.Product label, label location As shown in the figure below 7.Conditions of use Please keep the antenna away from metal and horn interference sources. Sichuan AI-Link Technology Co.,Ltd. page 13 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 8.Key component List

1 2 3 4 RTL8812CU-VR PCB JUI7.820.0457 Series FR-4,4LAY SMD3225-40M 40M DPX 2.4G@5G Realtek Hosonic T X C A C X T D K 9.Order WF-R12C-UWD2L WF-R12C-UWD3L 2.4G,5G 11ac,fpc connect 2.4G,5G 11ac, WF-R12C-UWD2L WF-R12C-UWD3L WF-R12C-UWD2L(fpc) WF-R12C-UWD3L Sichuan AI-Link Technology Co.,Ltd. page 14 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 10. Packaging Information:

16

) 1 222g 32541600pcs 400pcs;

4499mm*394mm*298mm;

5 Sichuan AI-Link Technology Co.,Ltd. page 15 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 8. FCC Statement FCC regulatory compliance 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. Warning: changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. This Module 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 your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Labelling Instruction for Host Product Integrator Please notice that 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 FCC ID: 2AOKI-WFR12CUWD2 any similar wording that expresses the same meaning may be used. Installation Notice to Host Product Manufacturer The OEM integrator is responsible for ensuring that the end-user has no manual instruction to remove or install module. The module is limited to installation in mobile application, a separate approval is required for all other operating configurations, including portable configurations with respect to 2.1093 and difference antenna configurations. Antenna Change Notice to Host manufacturer If you desire to increase antenna gain and either change antenna type or use same antenna type certified, a Class II permissive change application is required to be filed by us, or you (host manufacturer) can take responsibility through the change in FCC ID (new application) procedure followed by a Class II permissive change application. FCC other Parts, Part 15B Compliance Requirements for Host product manufacturer This modular transmitter is only FCC authorized for the specific rule parts listed on our grant, host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. Host manufacturer in any case shall ensure host product which is installed and operating with the module is in compliant with Part 15B requirements. 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. Sichuan AI-Link Technology Co.,Ltd. page 16 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 9 ISED Regulatory Compliance 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. Lmetteur/rcepteur exempt de licence contenu dans le prsent appareil est conforme aux CNR dInnovation, Sciences et Dveloppement conomique Canada applicables aux appareils radio exempts de licence. Lexploitation est autorise aux deux conditions suivantes :(1)Lappareil ne doit pas produire de brouillage; (2)Lappareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible den compromettre le fonctionnement. This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body. Cet quipement est conforme aux limites d'exposition aux radiations IC CNR-102 tablies pour un environnement non contrl. Cet quipement doit tre install et utilis avec une distance minimale de 20cm entre le radiateur et votre corps. Please notice that if the IC 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 IC: 23460-WFR12CUWD2 any similar wording that expresses the same meaning may be used. Ltiquette dhomologation dun module dInnovation, Sciences et Dveloppement conomique Canada devra tre pose sur le produit hte un endroit bien en vue, en tout temps. En labsence dtiquette, le produit hte doit porter une tiquette sur laquelle figure le numro dhomologation du module dInnovation, Sciences et Dveloppement conomique Canada, prcd du mot contient , ou dune formulation similaire allant dans le mme sens et qui va comme suit : Contient IC:

23460-WFR12CUWD2 est le numro dhomologation du module. This radio transmitter IC: 23460-WFR12CUWD2 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 indicated for any type listed are strictly prohibited for use with this device. Gain of antenna: 2.4G WIFI Ant1:3.46dBi , Ant2:1.72dBi, 5G WIFI Ant1:3.37dBi , Ant2:2.57dBi. Type of antenna: PIFA impedance for antenna type: 50ohm. Le prsent metteur radio IC: 23460-WFR12CUWD2 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. Gain d'antenne: 2.4G WIFI Ant1:3.46dBi ,Ant2:1.72dBi, 5G WIFI Ant1:3.37dBi , Ant2:2.57dBi. Type dantenne: PIFA. Impdance pour type dantenne: 50ohm. i. 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;

ii. for devices with detachable antenna(s), the maximum antenna gain permitted for devices in the bands 5250-5350 MHz and 5470-5725 MHz shall be such that the equipment still complies with the e.i.r.p. limit;

iii. for devices with detachable antenna(s), the maximum antenna gain permitted for devices in the band 5725-5850 MHz shall be such that the equipment still complies with the e.i.r.p. limits as appropriate; and i. ii. le dispositif utilis dans la bande 5150-5250 MHz est rserv une utilisation en intrieur afin de r duire le risque de brouillage prjudiciable aux systmes mobiles par satellite dans le mme canal;

pour les dispositifs antenne (s) d tachable (s), le gain d'antenne maximal autoris pour les Sichuan AI-Link Technology Co.,Ltd. page 17 of 18 WF-R12C-UWD2L IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module dispositifs dans les bandes 5250-5350 MHz et 5470-5725 MHz doit tre tel que l'quipement soit toujours conforme la norme e.i.r.p. limite;

iii. pour les dispositifs antenne (s) d tachable (s), le gain d'antenne maximal autoris pour les dispositifs de la bande 5725-5850 MHz doit tre tel que l'quipement soit toujours conforme la norme e.i.r.p. les limites, le cas chant; et Sichuan AI-Link Technology Co.,Ltd. page 18 of 18

WF-R12C-UWD2 Features Supported WLAN Standard IEEE Std. 802.11a IEEE Std. 802.11b IEEE Std. 802.11g IEEE Std. 802.11n IEEE Std. 802.11ac Chip Solution Realtek RTL8812CU-VR Size 30.0mm x47.0mm x 6.0mm Interface Assemble Band USB Screwing 2.4G/5G 3.3V Power supply Antenna One External Antennas One Internal Antennas Sichuan AI-Link Technology Co.,Ltd. Add:

Anzhou,Industrial park,Mianyang,Sichuan TEL : +86-13881190925 Emailshengwu.chang@changhong.com

:http://www.ailinkiot.com WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module Feedback of customers Confirmation We accept the specification after Confirmed Customer name Customer signature Confirmation Date Please feed back this paper and first paper after your signature by the address,thanks!

ADDAnzhou,Industrial park,Mianyang,Sichuan FactorySichuan AI-Link Technology Co.,Ltd. Approved Checked Product Designed WiFi Module WF-R12C-UWD2 2020-10-16 Sichuan AI-Link Technology Co.,Ltd. page 2 of 17 Model Date WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module Record of Modification Version Date Main content of modification V1.0 2020/10/16 First release Confirm Sichuan AI-Link Technology Co.,Ltd. page 3 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 1. Introduction WF-R12C-UWD2 module design is based on Realtek RTL8812CU-VR solution, The RTL8812CU-VR is a highly integrated single chip which has built in a 2x2 dual-band wireless LAN radio. The Module is a highly integrated MAC/BBP and 2.4/5GHz PA/LNA single chip which supports a 866.7Mbps PHY rate. The Module is designed to support standard-based features in the areas of security, quality of service, and international regulations, giving end users the greatest performance anytime and in any circumstance. This documentation describes the engineering requirements specification. 1.1 RF module Overview The general HW architecture for the module is shown in Figure 1. This WLAN Module design is based on Realtek RTL8812CU-VR. It is a highly integrated single-chip MIMO(Multiple In Multiple Out) Wireless LAN (WLAN) network interface controller complying with the 802.11 specification over USB interface. It combines a MAC, a 2T2R capable baseband, and RF in a single chip. An intelligent Wi-Fi coexistence algorithm is implemented to provide the best harmonized Wi-Fi performance. Figure 1 WF-R12C-UWD2 Block Diagram 1.2 Specification reference This specification is based on additional references listed below. _ IEEE Std. 802.11a _ IEEE Std. 802.11b _ IEEE Std. 802.11g _ IEEE Std. 802.11n _ IEEE Std. 802.11ac Sichuan AI-Link Technology Co.,Ltd. page 4 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 1.3 System Functions Table1: General Specification as below:

Main Chipset Operating Frequency WiFi Standard Modulation Realtek RTL8812CU-VR 2.4G/5G 802.11a/b/g/n/ac (2x2) WIFI:11b: DBPSK, DQPSK, CCK for DSSS 11a/g: BPSK, QPSK, 16QAM, 64QAM for OFDM 11n: BPSK, QPSK, 16QAM, 64QAM for OFDM 11ac: BPSK, QPSK, 16QAM, 64QAM,256QAM for OFDM Data rates Form factor Host Interface PCB Stack Dimension Antenna Operation Temperature Storage Temperature Operation Voltage Power Consumption 11b: 1, 2, 5.5 and 11Mbps 11a/g: 6, 9, 12, 18, 24, 36, 48 and 54 Mbps 11n: MCS0~15, up to 300Mbps 11ac: MCS0~9, Nss=2, up to 866.7Mbps 10pins USB 2.0 4-layers design Typical30.0mm x47.0mm x 6.0mm One External Antennas, One Internal Antennas Design 0 to +60

-40 to +80 3.3V +/-10%

1000mA Max Sichuan AI-Link Technology Co.,Ltd. page 5 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 2. Mechanical Specification 2.1 Mechanical Outline Drawing Typical Dimension (W x L ):30.0mmx 47.0mm x 6.0mm General tolerance: 0.3mm Sichuan AI-Link Technology Co.,Ltd. page 6 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 2.2 Pin define Description 3.3V 3.3V USB D-

USB D+

GND WL_WAKE_HOST Pdn GND HST_WAKE_WL GND Define Vcc Vcc USB DM USB DP GND WOWn RST GND HST_WAKE_WL GND Pin 1 2 3 4 5 6 7 8 9 10 2.3 Product Picture TOP VIEW BOTTOM VIEW Sichuan AI-Link Technology Co.,Ltd. page 7 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 3. Electrical Specification This Specification is based-on conductive DVT testing result. The extreme condition include overall temperature (0,+25,+40) and overall voltage (3.0V,3.3V,3.6V). TX Characteristics Min. Typ. Max. Unit Remark 3.1 IEEE 802.11b Section:

Items Specification Mode Channel Data rate 1. Power Levels(Calibrated) 1) 16dBm Target (For Each antenna port)

@11Mbps 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 5. Minimum Input Level Sensitivity(each chain) 1) 1Mbps (FER 8%) 2) 11Mbps (FER 8%) 6. Maximum Input Level (FER 8%) DBPSK, DQPSK and CCK and DSSS Contents IEEE802.11b CH1 to CH13 1, 2, 5.5, 11Mbps 13 16 19 dBm

-15 Min.

-10

-20 Typ.

-88

-82

-30

-50

-10

-10

-10

-10

-15 Max.

dBr dBr dB dB dB dB ppm Unit dBm dBm dBm Sichuan AI-Link Technology Co.,Ltd. page 8 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 3. 2 IEEE 802.11g/a Section:

Items Contents Specification Mode Channel Data rate IEEE802.11g & IEEE802.11a BPSK, QPSK, 16QAM, 64QAM and OFDM CH1 to CH13 @ 11g CH36 to CH48; CH149 to CH165 @ 11a 6, 9, 12, 18, 24, 36, 48, 54Mbps TX Characteristics Min. Typ. Max. Unit Remark 1. Power Levels 1) 14dBm Target (For Each antenna port) 2) 14dBm Target (For Each antenna port)

@ 11g 54Mbps

@ 11a 54Mbps 2. Spectrum Mask @ Target Power 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 3. Constellation Error(EVM) @ Target Power 1) 6Mbps 2) 9Mbps 3) 12Mbps 4) 18Mbps 5) 24Mbps 6) 36Mbps 7) 48Mbps 8) 54Mbps 4. Frequency Error 1) IEEE802.11g 2) IEEE802.11a RX Characteristics 5. Minimum Input Level Sensitivity(each chain) 1) 6Mbps (PER 10%) 2) 54Mbps (PER 10%) 6. Maximum Input Level (PER 10%) 1) IEEE802.11g 2) IEEE802.11a 13 13 16 16

-15

-15 Min.

-20

-30

Typ.

-86

-73 19 19

-20

-28

-40

-5

-8

-10

-13

-16

-19

-22

-25

-15

-15 Max.

dBm dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm ppm Unit dBm dBm dBm dBm Sichuan AI-Link Technology Co.,Ltd. page 9 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 3.3 IEEE 802.11n HT20 Section:

Items Data rate (MCS index) TX Characteristics 1. Power Levels 1) 12dBm Target (For Each antenna port) 2) 12dBm Target (For Each antenna port)

@ 2.4G MCS7

@ 5G MCS7 2. Spectrum Mask @ Target Power 1) at fc +/-11MHz 2) at fc +/-20MHz 3) at fc > +/-30MHz 3. Constellation Error(EVM) @ Target Power Specification Mode Channel 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 4. Frequency Error 1) IEEE802.11n HT20 @ 2.4G 2) IEEE802.11n HT20 @ 5G RX Characteristics 5. Minimum Input Level Sensitivity(each chain) 1) MCS0 (PER 10%) 8) MCS7 (PER 10%) 6. Maximum Input Level (PER 10%) 1) IEEE802.11n HT20 @ 2.4G 2) IEEE802.11n HT20 @ 5G Contents IEEE802.11n HT20 @ 2.4G IEEE802.11n HT20 @ 5G BPSK, QPSK, 16QAM, 64QAM and OFDM CH1 to CH13 @ 2.4G CH36 to CH48; CH149 to CH165@ 5G MCS0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15 Min. Typ. Max. Remark 12 12 15 15 Unit dBm dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm ppm Unit dBm dBm dBm dBm 18 18

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-27

-15

-15 Max.

-15

-15 Min.

-20

-30

Typ.

-86

-70 Sichuan AI-Link Technology Co.,Ltd. page 10 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 3.4 IEEE 802.11n HT40 Section:

Items Specification Mode Channel Data rate (MCS index) TX Characteristics 1. Power Levels (Calibrated) 1) 12dBm Target (For Each antenna port) 2) 12dBm Target (For Each antenna port)

@ 2.4G MCS7

@ 5G MCS7 2. Spectrum Mask @ Target Power 1) at fc +/-21MHz 2) at fc +/-40MHz 3) at fc > +/-60MHz 3. Constellation Error(EVM) @ Target Power 1) MCS0 2) MCS1 3) MCS2 4) MCS3 5) MCS4 6) MCS5 7) MCS6 8) MCS7 4. Frequency Error 1) IEEE802.11n HT40 @ 2.4G 2) IEEE802.11n HT40 @ 5G RX Characteristics 5. Minimum Input Level Sensitivity(each chain) 1) MCS0 (PER 10%) 2) MCS7 (PER 10%) 6. Maximum Input Level(PER 10%) 1) IEEE802.11n HT40 @ 2.4G 2) IEEE802.11n HT40 @ 5G Contents IEEE802.11n HT40 @ 2.4G IEEE802.11n HT40 @ 5G BPSK, QPSK, 16QAM, 64QAM and OFDM CH3 to CH11 @ 2.4G CH38 to CH46; CH151 to CH163 @ 5G MCS0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15 Min. Typ. Max. Remark 12 12

-15

-15 Min.

-20

-30 15 15

Typ.

-83

-66

18 18

-20

-28

-45

-5

-10

-13

-16

-19

-22

-25

-27

-15

-15 Max.

Unit dBm dBm dBr dBr dBr dB dB dB dB dB dB dB dB ppm ppm Unit dBm dBm dBm dBm Sichuan AI-Link Technology Co.,Ltd. page 11 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module Contents IEEE802.11ac BPSK, QPSK, 16QAM, 64QAM ,256QAM and OFDM CH36 to CH48; CH149 to CH165 @VHT20 CH38 to CH46; CH151 to CH163 @VHT40 CH42;CH155 @VHT80 MCS0/1/2/3/4/5/6/7/8/9 Unit Remark 3.5 IEEE 802.11ac Section:

Items Specification Mode Channel Data rate (MCS index) TX Characteristics 1. Power Levels (Calibrated) 1) 11dBm Target (For Each antenna port)

@VHT20/VHT40/VHT80 MCS7 2. Spectrum Mask @ Target Power 1) at fc +/-11MHz /20MHz/30MHz 2) at fc +/-21MHz /40MHz/60MHz 3) at fc +/-41MHz /80MHz/120MHz 3. Constellation Error(EVM) @ Target Power 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) MCS8 (PER 10%) 2) MCS9 (PER 10%) 6. Maximum Input Level(PER 10%) Min. Typ. 12 15

Max. 18

-20

-28

-40

-5

-10

-13

-16

-19

-22

-25

-27

-30

-32

-15 Max.

-61

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

-15 Min.

-30 Typ.

VHT20 VHT40 VHT80

-64

-58 4. Software Requirements The driver supports the following operating systems: Linux, Microsoft Windows XP, Vista and Win7. Mfg. software tool is Win7_MP_Kit_RTL11ac_8822CU_USB_v8.04_20200416. Sichuan AI-Link Technology Co.,Ltd. page 12 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 5. Antenna specification NO. Type Antenna Project Code Frequency Range Max Gain 1 2 3 External PIFA Antenna Onboard PIFA Antenna Metal Antenna 2.4 ~ 2.5 / 5.15 ~ 5.85 GHz 3.46 dBi(@2.4 ~ 2.5 GHz) 3.37 dBi(@5.15 ~ 5.85 GHz) 2.4 ~ 2.5 / 5.15 ~ 5.85 GHz 2.57 dBi(@5.15 ~ 5.85 GHz) 1.72 dBi(@2.4 ~ 2.5 GHz) Metal Antenna 2.4 ~ 2.5 / 5.15 ~ 5.85 GHz 3.68 dBi(@5.15 ~ 5.85 GHz) 3.79 dBi(@2.4 ~ 2.5 GHz) 6.Product label, label location As shown in the figure below 7.Conditions of use Please keep the antenna away from metal and horn interference sources. Sichuan AI-Link Technology Co.,Ltd. page 13 of 17 M odel:W F-R12C-UW D2 M A C :XXXXXXXXXXXX FCC ID: 2AOKI-WFR12CUWD2 IC : 23460-WFR12CUWD2 Sichuan AI-Link Technology Co.,Ltd. WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 8.Key component List

RTL8812CU-VR PCB JUI7.820.0457 Series FR-4,4LAY SMD3225-40M 40M DPX 2.4G@5G Realtek Hosonic T X C A C X T D K 9.Order WF-R12C-UWD2 WF-R12C-UWD3 2.4G,5G 11ac,fpc connect 2.4G,5G 11ac, 1 2 3 4 WF-R12C-UWD2(fpc connector) WF-R12C-UWD3(normal connector) Sichuan AI-Link Technology Co.,Ltd. page 14 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 10. Packaging Information:

16

) 1 222g 32541600pcs 400pcs;

4499mm*394mm*298mm;

Sichuan AI-Link Technology Co.,Ltd. page 15 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 5 8. FCC Statement FCC regulatory compliance 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. Warning: changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. This Module 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 your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Labelling Instruction for Host Product Integrator Please notice that 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 FCC ID: 2AOKI-WFR12CUWD2 any similar wording that expresses the same meaning may be used. Installation Notice to Host Product Manufacturer The OEM integrator is responsible for ensuring that the end-user has no manual instruction to remove or install module. The module is limited to installation in mobile application, a separate approval is required for all other operating configurations, including portable configurations with respect to 2.1093 and difference antenna configurations. Antenna Change Notice to Host manufacturer If you desire to increase antenna gain and either change antenna type or use same antenna type certified, a Class II permissive change application is required to be filed by us, or you (host manufacturer) can take responsibility through the change in FCC ID (new application) procedure followed by a Class II permissive change application. FCC other Parts, Part 15B Compliance Requirements for Host product manufacturer This modular transmitter is only FCC authorized for the specific rule parts listed on our grant, host product manufacturer is responsible for compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. Host manufacturer in any case shall ensure host product which is installed and operating with the module is in compliant with Part 15B requirements. 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. Sichuan AI-Link Technology Co.,Ltd. page 16 of 17 WF-R12C-UWD2 IEEE 802.11a/b/g/n/ac 2T2R USB WIFI Module 9 ISED Regulatory Compliance 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. Lmetteur/rcepteur exempt de licence contenu dans le prsent appareil est conforme aux CNR dInnovation, Sciences et Dveloppement conomique Canada applicables aux appareils radio exempts de licence. Lexploitation est autorise aux deux conditions suivantes :(1)Lappareil ne doit pas produire de brouillage; (2)Lappareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible den compromettre le fonctionnement. This equipment complies with IC RSS102 radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body. Cet quipement est conforme aux limites d'exposition aux radiations IC CNR102 tablies pour un environnement non contrl. Cet quipement doit tre install et utilis avec une distance minimale de 20cm entre le radiateur et votre corps. Please notice that if the IC 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 IC: 23460-WFR12CUWD2 any similar wording that expresses the same meaning may be used. Ltiquette dhomologation dun module dInnovation, Sciences et Dveloppement conomique Canada devra tre pose sur le produit hte un endroit bien en vue, en tout temps. En labsence dtiquette, le produit hte doit porter une tiquette sur laquelle figure le numro dhomologation du module dInnovation, Sciences et Dveloppement conomique Canada, prcd du mot contient , ou dune formulation similaire allant dans le mme sens et qui va comme suit : Contient IC:

23460-WFR12BUWD1 est le numro dhomologation du module. i. 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;

ii. for devices with detachable antenna(s), the maximum antenna gain permitted for devices in the bands 5250-5350 MHz and 5470-5725 MHz shall be such that the equipment still complies with the e.i.r.p. limit;

iii. for devices with detachable antenna(s), the maximum antenna gain permitted for devices in the band 5725-5850 MHz shall be such that the equipment still complies with the e.i.r.p. limits as appropriate; and i. le dispositif utilis dans la bande 5150-5250 MHz est rserv une utilisation en intrieur afin de rduire le risque de brouillage prjudiciable aux systmes mobiles par satellite dans le mme canal;

ii. pour les dispositifs antenne (s) dtachable (s), le gain d'antenne maximal autoris pour les dispositifs dans les bandes 5250-5350 MHz et 5470-5725 MHz doit tre tel que l'quipement soit toujours conforme la iii. pour les dispositifs antenne (s) dtachable (s), le gain d'antenne maximal autoris pour les dispositifs de la bande 5725-5850 MHz doit tre tel que l'quipement soit toujours conforme la norme e.i.r.p. les limites, le norme e.i.r.p. limite;

cas chant; et Sichuan AI-Link Technology Co.,Ltd. page 17 of 17

Label and location M odel:W F-R12C-UW D2 M A C :XXXXXXXXXXXX FCC ID: 2AOKI-WFR12CUWD2 IC : 23460-WFR12CUWD2 Sichuan AI-Link Technology Co.,Ltd. M odel:W F-R12C-UW D3 M A C :XXXXXXXXXXXX FCC ID: 2AOKI-WFR12CUWD2 IC : 23460-WFR12CUWD2 Sichuan AI-Link Technology Co.,Ltd.

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THIS MUST BE SIGNED BY THE APPLICANT/AGENT AND SHOULD BE PLACED ON APPROPRIATE LETTERHEAD Request for Modular/Limited Modular Approval Date: June 7, 2021 Subject: Manufacturers Declaration for - Modular Approval Confidentiality Request for: ______FCC ID: 2AOKI-WFR12CUWD2 ______

- Limited Modular Approval - Limited Split Modular Approval

- Split Modular Approval 8 Basic Requirements FCC Part 15.212(a)(1) For Items Marked NO(*), the Limited Module Description Must be Filled Out on the Following Pages Modular Approval Requirement Requirement Met 1. The modular transmitter must have its own RF shielding. This is intended to ensure that the module does not have to rely upon the shielding provided by the device into which it is installed in order for all modular transmitter emissions to comply with FCC limits. It is also intended to prevent coupling between the RF circuitry of the module and any wires or circuits in the device into which the module is installed. Such coupling may result in non-compliant operation. The physical crystal and tuning capacitors may be located external to the shielded radio elements. 15.212(a)(1)(i) Details: The module contains a metal shield which covers all RF components and circuitry. The shield is located on the top of the board next to antenna connector.

- YES - NO(*) 2. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with FCC requirements under conditions of excessive data rates or over-modulation. 15.212(a)(1)(ii) Details: Data to the modulation circuit is buffered as described in the operational description provided with the application.

- YES - NO(*) 3. The modular transmitter must have its own power supply regulation on the module. This is intended to ensure that the module will comply with FCC requirements regardless of the design of the power supplying circuitry in the device into which the module is installed. 15.212(a)(1)(iii) Details: The module contains its own power supply regulation. Please refer to schematic filed with this application.

- YES - NO(*) 4. The modular transmitter must comply with the antenna and transmission system requirements of 15.203, 15.204(b), 15.204(c), 15.212(a), and 2.929(b). 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 15.212(b). 15.212(a)(1)(iv) Details: The module connects to one permanently attached antenna and one unique antenna connector.

- YES - NO(*) 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. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in Section 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 Section 15.27(a)). The length of these lines shall be 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 or commercially available (see Section 15.31(i)). 15.212(a)(1)(v) Details: The module was tested stand-alone as shown in test setup photographs filed with this application.

- YES - NO(*) 070920-02b THIS MUST BE SIGNED BY THE APPLICANT/AGENT AND SHOULD BE PLACED ON APPROPRIATE LETTERHEAD Modular Approval Requirement 6. The modular transmitter must be labeled with its own FCC ID number, or use an electron display (see Requirement Met KDB Publication 784748). If using a permanently affixed label with its own FCC ID number, 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. 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. 15.212(a)(1)(vi) Details: There is a label on the module as shown in the labeling exhibit filed with this application. Host specific labeling instructions are shown in the installation manual .filed with this application.

- YES - NO(*) 7. The modular transmitter must comply with all specific rule or operating requirements applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. 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. 15.212(a)(1)(vii) Details: The module complies with FCC Part 15C requirements. Instructions to the OEM installer are provided in the installation manual filed with this application.

- YES - NO(*) 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(f) 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. 15.212(a)(1)(viii) Details: The module meets Portable exclusion levels as shown in the RF exposure information filed with this application.

- YES - NO(*) 070920-02b THIS MUST BE SIGNED BY THE APPLICANT/AGENT AND SHOULD BE PLACED ON APPROPRIATE LETTERHEAD Limited Module Description When Applicable

* If a module does NOT meet one or more of the above 8 requirements, the applicant may request Limited Modular Approval (LMA). This Limited Modular Approval (LMA) is applied with the understanding that the applicant will demonstrate and will retain control over the final installation of the device, such that compliance of the end product is always assured. The operating condition(s) for the LMA;

the module is only approved for use when installed in devices produced by grantee. A description regarding how control of the end product, into which the module will be installed, will be maintained by the applicant/manufacturer, such that full compliance of the end product is always ensured should be provided here. Details: <example - N/A>

Software Considerations KDB 594280 / KDB 442812 (One of the following 2 items must be applied) Requirement 1. For non-Software Defined Radio transmitter modules where software is used to ensure compliance of the device, technical description must be provided about how such control is implemented to ensure prevention of third-party modification; see KDB Publication 594280. Details: The firmware of the device can not be modified or adjusted by the end user as described in operation description.

- Provided in Separate Cover Letter Requirement Met

- N/A 2. For Software Defined Radio (SDR) devices, transmitter module applications must provide a software security description; see KDB Publication 442812.

- Provided in Separate Cover Letter

- N/A Details: <example N/A>

Split Modular Requirements Requirement Provided in Manual 1. For split modular transmitters, specific descriptions for secure communications between front-end and control sections, including authentication and restrictions on third-party modifications; also, instructions to third-party integrators on how control is maintained. Details: <example N/A >

- Provided in Separate Cover Letter

- N/A 070920-02b THIS MUST BE SIGNED BY THE APPLICANT/AGENT AND SHOULD BE PLACED ON APPROPRIATE LETTERHEAD OEM Integration Manual Guidance KDB 996369 D03 Section 2 Clear and Specific Instructions Describing the Conditions, Limitations, and Procedures for third-parties to use and/or integrate the module into a host device. Requirement Is this module intended for sale to third parties?

- YES

- No, If No, and LMA applies, the applicant can optionally choose to not make the following detailed info public. However there still needs to be basic integration instructions for a users manual and the information below must still be included in the operational description. If the applicant wishes to keep this info confidential, this will require a separate statement cover letter explaining the module is not for sale to third parties and that integration instructions are internal confidential documents. Items required to be in the manual See KDB 996369 D03, Section 2 As of May 1, 2019, the FCC requires ALL the following information to be in the installation manual. Modular transmitter applicants should include information in their instructions for all these items indicating clearly when they are not applicable. For example information on trace antenna design could indicate Not Applicable. Also if a module is limited to only a grantees own products and not intended for sale to third parties, the user instructions may not need to be detailed and the following items can be placed in the operational description, but this should include a cover letter as cited above. 1. List of applicable FCC rules. KDB 996369 D03, Section 2.2 a. Only list rules related to the transmitter. 2. Summarize the specific operational use conditions. KDB 996369 D03, Section 2.3 a. Conditions such as limits on antennas, cable loss, reduction of power for point to point 3. Limited Module Procedures. KDB 996369 D03, Section 2.4 systems, professional installation info a. Describe alternative means that the grantee uses to verify the host meets the necessary limiting conditions b. When RF exposure evaluation is necessary, state how control will be maintained such that compliance is ensured, such as Class II for new hosts, etc. 4. Trace antenna designs. KDB 996369 D03, Section 2.5 a. Layout of trace design, parts list, antenna, connectors, isolation requirements, tests for design verification, and production test procedures for ensuring compliance. If confidential, the method used to keep confidential must be identified and information provided in the operational description. 5. RF exposure considerations. KDB 996369 D03, Section 2.6 a. Clearly and explicitly state conditions that allow host manufacturers to use the module. Two types of instructions are necessary: first to the host manufacturer to define conditions (mobile, portable xx cm from body) and second additional text needed to be provided to the end user in the host product manuals. 6. Antennas. KDB 996369 D03, Section 2.7 a. List of antennas included in the application and all applicable professional installer instructions when applicable. The antenna list shall also identify the antenna types

(monopole, PIFA, dipole, etc note that omni-directional is not considered a type) 7. Label and compliance information. KDB 996369 D03, Section 2.8 a. Advice to host integrators that they need to provide a physical or e-label stating Contains FCC ID: with their finished product 8. Information on test modes and additional testing requirements. KDB 996369 D03, Section 2.9 a. Test modes that should be taken into consideration by host integrators including clarifications necessary for stand-alone and simultaneous configurations. b. Provide information on how to configure test modes for evaluation 9. Additional testing, Part 15 Subpart B disclaimer. KDB 996369 D03, Section 2.10

- All Items shown to the left are provided in the Modular Integration Guide (or UM) for Full Modular Approval (MA) or LMA.

- An LMA applies and is approved ONLY for use by the grantee in their own products, and not intended for sale to 3rd parties as provided in a separate cover letter. Therefore the information shown to the left is found in the theory of operation. Sincerely, By:

070920-02b __________________________

(Signature/Title1) HU CAIXIA _

(Print name) 1 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate authorized agent letter has been provided. Letters should be placed on appropriate letterhead.

Sichuan AI-Link Technology Co.,Ltd. Authority to Act as Agent Date: May 24, 2021 American Certification Body, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 To Whom It May Concern:

_____Intertek Testing Services Shanghai 1 __ is authorized to act on our behalf, until otherwise notified, for applications to American Certification Body, Inc. (ACB). We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. We also declare that the information provided to the FCC is true and correct to the best of our knowledge (47 CFR 2.911(d)) and we have been informed of the grantee responsibilities (47 CFR 2.909) with regard to certified equipment. Thank you, Agency Agreement Expiration Date: _____2022/05/24_____ By:

Title:

On behalf of: _____Sichuan AI-Link Technology Co.,Ltd.__________ Telephone:

______HU CAIXIA ___________

(Print name) __________________________ __ +86-0816-2438701 __________ _______ Director_____________

(Company Name)

(Signature2) 1 - If a group entity is designated as the authorized agent, the letter of authorization must identify those individuals within the group who are authorized to take action on the application; or alternatively a statement must be provided indicating that as the authorized agent, any individual within the group entity is authorized to act on behalf of the applicant /

grantee and take action on the application. See https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=33316 . 2 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate authorized agent letter has been provided. Letters should be placed on appropriate letterhead.

Sichuan AI-Link Technology Co.,Ltd. Request for Confidentiality Date: May 22, 2021 Subject: Confidentiality Request for: _FCC ID: 2AOKI-WFR12CUWD2 Pursuant to FCC 47 CFR 0.457(d) and 0.459 and IC RSP-100, Section 9.4, the applicant requests that a part of the subject FCC application be held confidential. Type of Confidentiality Requested Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Permanent Permanent *1 Permanent Permanent Permanent Permanent Permanent *3 Exhibit Block Diagrams External Photos Internal Photos Operation Description/Theory of Operation Parts List & Placement/BOM Tune-Up Procedure Schematics Test Setup Photos Users Manual ______Sichuan AI-Link Technology Co.,Ltd._____ has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality:

The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality:

The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of ___(specify number of days not to exceed 180)2___ days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify ACB in the event information regarding the product or the product is made available to the public before the requested period has expired. ACB will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-1705. NOTE for Industry Canada Applications:

IC currently only distinguishes Permanent Confidentiality exhibits as shown above. Short Term confidentiality is not considered applicable to IC applications. Sincerely, By:

_______HU CAIXIA___________ __________________________

(Signature/Title3)

(Print name) 1 - The asterisked items (*) require further information to be provided to ACB before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 and the specific Document link for D01 found at:

https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. 2 - Please refer to http://acbcert.com/documents/misc-docs/Memo-Short-Term-Vs-Standard-Confidentiality.pdf for complete details. 3 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate authorized agent letter has been provided. Letters should be placed on appropriate letterhead.

Request for Class II Permissive Change Data: May 24, 2021 FCC ID: 2AOKI-WFR12CUWD2 Date of Grant: 10/23/2020 TO: Federal Communication Commission Please be notified that we, the undersigned, Sichuan AI-Link Technology Co.,Ltd. declare that the reasons for this Class II permissive change are as below:

1. Change the outgoing lines of the left and right antennas location(Ant2) 2. Add two antennas Thank you. Sincerely, Caixia Hu / Director Sichuan AI-Link Technology Co., Ltd. Tel: +86-0816-2438701 Email: caixia.hu@changhong.cm

Sichuan AI-Link Technology Co.,Ltd. Declaration Letter WIFI Module/

We Sichuan AI-Link Technology Co., Ltd. hereby declare that the product is capable of operating with WF-R12C-UWD2L,WF-R12C-UWD3L channel 12 and 13 in regions other than the US and Canada. Versions of the product available for import and sale in the US and Canada, or any units marked with the FCC ID or IC certification number, will not operation on channels 12 and 13. It will not be possible for users and configure these channels in the US and Canada version. Installation of this product must comply with local regulations and codes. During deployment of the system and its initial setup, professional installer must ensure that the allowed EIRP limit is not exceeded (in the Country of exploitation of this equipment). Date:

HU CAIXIA Sichuan AI-Link Technology Co., Ltd. Tel: +86- 0816-2438701 Email: caixia.hu@changhong.com May 20,2021

DECLARATION We, Sichuan AI-Link Technology Co., Ltd. declare Our companys project WIFI Module Model: WF-R12C-UWD2L, WF-R12C-UWD3L are same, Except different FPC connector type. The above-mentioned statements of our company are totally true. If false, we will bear corresponding liability. WF-R12C-UWD2L WF-R12C-UWD3L Date: May 20, 2021

HU CAIXIA Sichuan AI-Link Technology Co., Ltd. Tel: +86- 0816-2438701 Email: caixia.hu@changhong.com

Sichuan AI-Link Technology Co.,Ltd. Request for Modular/Limited Modular Approval Date: October 15, 2020 Subject: Manufacturers Declaration for - Modular Approval Confidentiality Request for: ______FCC ID: 2AOKI-WFR12CUWD2______ 8 Basic Requirements FCC Part 15.212(a)(1)

- Limited Modular Approval - Limited Split Modular Approval

- Split Modular Approval For Items Marked NO(*), the Limited Module Description Must be Filled Out on the Following Pages Modular Approval Requirement Requirement Met 1. The modular transmitter must have its own RF shielding. This is intended to ensure that the module does not have to rely upon the shielding provided by the device into which it is installed in order for all modular transmitter emissions to comply with FCC limits. It is also intended to prevent coupling between the RF circuitry of the module and any wires or circuits in the device into which the module is installed. Such coupling may result in non-compliant operation. The physical crystal and tuning capacitors may be located external to the shielded radio elements. 15.212(a)(1)(i) Details: The module contains a metal shield which covers all RF components and circuitry. The shield is located on the top of the board next to antenna connector.

- YES - NO(*) 2. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with FCC requirements under conditions of excessive data rates or over-modulation. 15.212(a)(1)(ii) Details: Data to the modulation circuit is buffered as described in the operational description provided with the application.

- YES - NO(*) 3. The modular transmitter must have its own power supply regulation on the module. This is intended to ensure that the module will comply with FCC requirements regardless of the design of the power supplying circuitry in the device into which the module is installed. 15.212(a)(1)(iii) Details: The module contains its own power supply regulation. Please refer to schematic filed with this application.

- YES - NO(*) 4. The modular transmitter must comply with the antenna and transmission system requirements of 15.203, 15.204(b), 15.204(c), 15.212(a), and 2.929(b). 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 15.212(b). 15.212(a)(1)(iv) Details: The module connects to permanently attached antenna.

- YES - NO(*) 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. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in Section 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 Section 15.27(a)). The length of these lines shall be 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 or commercially available (see Section 15.31(i)). 15.212(a)(1)(v) Details: The module was tested stand-alone as shown in test setup photographs filed with this application.

- YES - NO(*) 053019-02a Sichuan AI-Link Technology Co.,Ltd. 6. The modular transmitter must be labeled with its own FCC ID number, or use an electron display (see Modular Approval Requirement Requirement Met KDB Publication 784748). If using a permanently affixed label with its own FCC ID number, 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. 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. 15.212(a)(1)(vi) Details: There is a label on the module as shown in the labeling exhibit filed with this application. Host specific labeling instructions are shown in the installation manual .filed with this application.

- YES - NO(*) 7. The modular transmitter must comply with all specific rule or operating requirements applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. 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. 15.212(a)(1)(vii) Details: The module complies with FCC Part 15C requirements. Instructions to the OEM installer are provided in the installation manual filed with this application.

- YES - NO(*) 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(f) 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. 15.212(a)(1)(viii) Details: The module meets Portable exclusion levels as shown in the RF exposure information filed with this application.

- YES - NO(*) 053019-02a Sichuan AI-Link Technology Co.,Ltd. Limited Module Description When Applicable

* If a module does NOT meet one or more of the above 8 requirements, the applicant may request Limited Modular Approval (LMA). This Limited Modular Approval (LMA) is applied with the understanding that the applicant will demonstrate and will retain control over the final installation of the device, such that compliance of the end product is always assured. The operating condition(s) for the LMA;

the module is only approved for use when installed in devices produced by grantee. A description regarding how control of the end product, into which the module will be installed, will be maintained by the applicant/manufacturer, such that full compliance of the end product is always ensured should be provided here. Details: <example - N/A>

Software Considerations KDB 594280 / KDB 442812 (One of the following 2 items must be applied) Requirement Requirement Met 1. For non-Software Defined Radio transmitter modules where software is used to ensure compliance of the device, technical description must be provided about how such control is implemented to ensure prevention of third-party modification; see KDB Publication 594280. Details: The firmware of the device can not be modified or adjusted by the end user as described in operation description. Cover Letter

- Provided in Separate

- N/A 2. For Software Defined Radio (SDR) devices, transmitter module applications must provide a software security description; see KDB Publication 442812.

- Provided in Separate Cover Letter

- N/A Details: <example N/A>

Split Modular Requirements Requirement Provided in Manual 1. For split modular transmitters, specific descriptions for secure communications between front-end and control sections, including authentication and restrictions on third-party modifications; also, instructions to third-party integrators on how control is maintained. Details: <example N/A >

- Provided in Separate Cover Letter

- N/A 053019-02a Sichuan AI-Link Technology Co.,Ltd. OEM Integration Manual Guidance KDB 996369 D03 Section 2 Clear and Specific Instructions Describing the Conditions, Limitations, and Procedures for third-parties to use and/or integrate the module into a host device. Requirement Is this module intended for sale to third parties?

- YES

- No, If No, and LMA applies, the applicant can optionally choose to not make the following detailed info public. However there still needs to be basic integration instructions for a users manual and the information below must still be included in the operational description. If the applicant wishes to keep this info confidential, this will require a separate statement cover letter explaining the module is not for sale to third parties and that integration instructions are internal confidential documents. Items required to be in the manual See KDB 996369 D03, Section 2 As of May 1, 2019, the FCC requires ALL the following information to be in the installation manual. Modular transmitter applicants should include information in their instructions for all these items indicating clearly when they are not applicable. For example information on trace antenna design could indicate Not Applicable. Also if a module is limited to only a grantees own products and not intended for sale to third parties, the user instructions may not need to be detailed and the following items can be placed in the operational description, but this should include a cover letter as cited above. 1. List of applicable FCC rules. KDB 996369 D03, Section 2.2 a. Only list rules related to the transmitter. 2. Summarize the specific operational use conditions. KDB 996369 D03, Section 2.3 a. Conditions such as limits on antennas, cable loss, reduction of power for point to point 3. Limited Module Procedures. KDB 996369 D03, Section 2.4 systems, professional installation info a. Describe alternative means that the grantee uses to verify the host meets the necessary limiting conditions b. When RF exposure evaluation is necessary, state how control will be maintained such that compliance is ensured, such as Class II for new hosts, etc. 4. Trace antenna designs. KDB 996369 D03, Section 2.5 a. Layout of trace design, parts list, antenna, connectors, isolation requirements, tests for design verification, and production test procedures for ensuring compliance. If confidential, the method used to keep confidential must be identified and information provided in the operational description. 5. RF exposure considerations. KDB 996369 D03, Section 2.6 a. Clearly and explicitly state conditions that allow host manufacturers to use the module. Two types of instructions are necessary: first to the host manufacturer to define conditions (mobile, portable xx cm from body) and second additional text needed to be provided to the end user in the host product manuals. 6. Antennas. KDB 996369 D03, Section 2.7 a. List of antennas included in the application and all applicable professional installer instructions when applicable. The antenna list shall also identify the antenna types

(monopole, PIFA, dipole, etc note that omni-directional is not considered a type) 7. Label and compliance information. KDB 996369 D03, Section 2.8 a. Advice to host integrators that they need to provide a physical or e-label stating Contains FCC ID: with their finished product 8. Information on test modes and additional testing requirements. KDB 996369 D03, Section 2.9 a. Test modes that should be taken into consideration by host integrators including clarifications necessary for stand-alone and simultaneous configurations. b. Provide information on how to configure test modes for evaluation 9. Additional testing, Part 15 Subpart B disclaimer. KDB 996369 D03, Section 2.10

- All Items shown to the left are provided in the Modular Integration Guide (or UM) for Full Modular Approval (MA) or LMA.

- An LMA applies and is approved ONLY for use by the grantee in their own products, and not intended for sale to 3rd parties as provided in a separate cover letter. Therefore the information shown to the left is found in the theory of operation. Sincerely, By:

053019-02a __________________________

(Signature/Title1) ____ HU CAIXIA ____________________

(Print name) 1 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate authorized agent letter has been provided. Letters should be placed on appropriate letterhead.

DECLARATION We, Sichuan AI-Link Technology Co., Ltd. declare Our companys project Model: WF-R12C-UWD2, WF-R12C-UWD3 WIFI Module are same, Except different FPC connector type. The above-mentioned statements of our company are totally true. If false, we will bear corresponding liability. Date: October 09, 2020

HU CAIXIA Sichuan AI-Link Technology Co., Ltd. Tel: +86- 0816-2438701 Email: caixia.hu@changhong.com