FCC ID: 2AMM6-825X1BA BT Mesh Module

BT Mesh Soc Module E W N - 8 2 5 0 F G T 1 A A E W N - 8 2 5 8 F A T 1 B A Datasheet V1.3 BT Mesh Soc Module E-mailsales@eardatek.com Earda Technologies Co.,Ltd EDK-Q4-YFB-036 A/0 ModuleEWN-8250FGT1AA EWN-8258FAT1BA Contents 1 General Specifications -------------------------------------------------------------------------- - 3 -

2 Features ---------------------------------------------------------------------------------------------- - 3 -

3 System Block Diagram ------------------------------------------------------------------------- - 4 -

4 PHY Specification -------------------------------------------------------------------------------- - 4 -

5 Other Specifications ----------------------------------------------------------------------------- - 6 -

6 DC Specifications --------------------------------------------------------------------------------- - 6 -

7 Module configurations------------------------------------------------------------------------- - 7 -

8 Pin Definition -------------------------------------------------------------------------------------- - 8 -

9 Module Photos ----------------------------------------------------------------------------------- - 10 -

10 Key material list ------------------------------------------------------------------------------- - 10 -

11 Package Information ------------------------------------------------------------------------ - 11 -

12 Reference design------------------------------------------------------------------------------ - 12 -

12.1 RF ---------------------------------------------------------------------------------------------------- - 12 -

12.2 Power supply requirement ------------------------------------------------------------------ - 13 -

12.3.1 Interface interference------------------------------------------------------------------------------------- - 14 -

12.3.2 The main chip interferes with DDR ----------------------------------------------------------------- - 15 -

13 Revision History ------------------------------------------------------------------------------- - 19 -

Waiting for your suggestion at anytime. - 2 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 1 General Specifications EWN-8250FGT1AA/EWN-8258FAT1BA is Bluetooth LE Soc solution with internal flash. It combines the radio frequency, digital processing, protocols stack software ,profiles for Bluetooth Low Energy(up to Bluetooth 5) and Tmall Genie Mesh into a single Soc. 2 Features Bluetooth 5 Compliant 2Mbps LE external DSP BLE transceiver embedded and above Long Range 125Kbps and 500Kbps support Tmall Genie Mesh Support BLE and Tmall Genie Mesh into a single SoC without the requirement for an Embedded hardware acceleration for Elliptical curve cryptography (ECC) used in BLE 4.2 Program memory: internal 512kB Flash(EWN-8250FGT1AA)/

1MB Flash (EWN-8258FAT1BA) Data memory: 48kB on-chip SRAM (EWN-8250FGT1AA)/

64kB on-chip SRAM (EWN-8258FAT1BA). Write protect all or portions of memory Multi firmware encryption methods for anti-cloning protection Embedded hardware AES and AES-CCM Multiple stage power management to minimize power consumption SWS independent Download and Debug interface 14bit 10-channel SAR ADC I/O UARTPWM Waiting for your suggestion at anytime. - 3 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 3 System Block Diagram Fig 1 System Block Diagram 4 PHY Specification Table 1 Bluetooth RF Parameters Protocol Interface BT5.0 UART Frequency 2380 MHz ~ 2500MHz Programmable in 1MHz step Data rate BLE 1Mbps,250KHz deviation Waiting for your suggestion at anytime. - 4 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA Wanted signal at -67dBm Wanted signal at -67dBm 37/39 dB Wanted signal at -67dBm Item Sym. Min. Typ. Max. Unit Condition Table 2 RX Performance BLE 1Mbps RF_Rx performance (250KHz deviation) Sensitivity 1Mbps

-95 dBm

-250

+300 KHz Frequency Offset Tolerance Co-channel rejection Image rejection

+1/-1 MHz In-band blocking offset rejection

+2/-2 MHz

(Equal Modulation offset Interference)

>=3 MHz offset Output power, maximum setting Output power, minimum setting Programmable output power range Modulation 20dB bandwidth

-11 37 1/3 42 10

-45 55 2.5 dB dB dB dB dBm dBm dB MHz Item Sym. Min. Typ. Max. Unit Condition Table 3 TX Performance BLE 1Mbps RF_TX performance Waiting for your suggestion at anytime. - 5 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 5 Other Specifications Table 4 other Specifications Operating Temperature

-40~+105 Storage Temperature Module: -40~+105 Package: -20~+70 Operating Humidity RH 95%(Non-Condensing) Storage Humidity RH 95%(Non-Condensing) Humidity level Level 3 6 DC Specifications Item Sym. Min. Typ. Max. Unit Condition VDD_3.3V VBAT 1.8 3.6 3.3V Supply Voltage Table 5 DC Specifications 3.3 5.3 4.8 20 1 1.2 1.4 0.4 V mA mA mA uA uA uA uA

whole chip whole chip @0dBm with whole chip @10dBm with DCDC DCDC uA uA uA uA IRX ITX ITX RX current TX current TX current Deep sleep with 8kB SRAM retention Deep sleep with retention Deep sleep with 32kB SRAM retention Deep sleep 16kB SRAM Ideep1 without SRAM Ideep2 retention

Waiting for your suggestion at anytime. - 6 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 7 Module configurations Module Size (Unit: mm): 24.5(0.3) *15.0(0.25)*2.4(0.2) Fig 2 Module Size (Top view) Waiting for your suggestion at anytime. - 7 - E-mailsales@eardatek.com 8 Pin Definition ModuleEWN-8250FGT1AA EWN-8258FAT1BA Fig 3 Top view 1 2 3 Table 6 the hardware Pin definition of the module Table 6 Pin definition PIN Definition IC Pin Description VBAT GND PWM0

PC1 Supply power 1.8V-3.3V Module power reference PWM output for LED driveDefault control cold white light Waiting for your suggestion at anytime. - 8 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 4 5 6 7 8 9 PIN Definition IC Pin Description PWM1 PC3 PWM4 PB4 PWM output for LED driveDefault control PWM output for LED driveDefault control General I/O port warm white light SAR ADC Input General I/O port Red light SAR ADC Input General I/O port PWM5 PB5 Green light PWM output for LED driveDefault control General I/O port PWM output for LED driveDefault control PWM2 PC4 Blue light PB6 PB1 PB7 General I/O port SAR ADC Input General I/O port Serial port sending data General I/O port Serial port receiving data General I/O port ADC UART_TX 10 UART_RX Notes:

1. Download Interface use SWS test point. 2. Only SWS interface can be used for debugging firmware. Waiting for your suggestion at anytime. - 9 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 9 Module Photos FIG 4 Top View FIG 5 Bottom View 10 Key material list Type Crystal Inductance IC IC Table 7 Key material list 24MHz 12pF 20ppm 10uH TLSR8250F512GT32

(only for EWN-8250FGT1AA) TLSR8258F1KAT32

(only for EWN-8258FAT1BA) Model Footprint QTY. 3225 0805 QFN32 1PCS 1PCS 1PCS QFN32 1PCS Waiting for your suggestion at anytime. - 10 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 11 Package Information Module Place the module in the blister tray Stack the blister tray Put it into the carton Waiting for your suggestion at anytime. - 11 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA area. 12 Reference design 12.1 RF a) Under the antenna and in the two directions indicated by the arrow, avoid covering the ground, routing and placing metal components. It is better to directly hollow out the PCB in this Fig 6 Antenna b) It is recommended not to use any components within 30mm of the module antenna area, and the module baseboard should also avoid wiring and covering the ground as much as possible. c) It is strongly recommended that the user place the antenna of the Bluetooth module close to the edge of the backplane as far as possible when laying out the PCB, as shown in the figure below, so as to ensure the good performance of the antenna. Fig 7 Recommended PCB layout Waiting for your suggestion at anytime. - 12 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 12.2 Power supply requirement The module power supply voltage is DC+3.3V. The power supply design needs to consider the output current and power interference. The power supply current design needs to reserve 50mA. To avoid the +3.3V power supply from interfering with other circuits on the motherboard, it is recommended to supply to the module using the regulator circuit alone. the recommended DC-DC circuit structure shown in the figure below. A 4.7uF~10uF capacitor is connected in parallel at 3_3VD output to filter out the interference. A bead is connected in series at 3_3VD output. The bead and capacitor must be placed as close to the module as possible. If you need to share +3.3V with other circuits, consider whether the current of the shared power supply is sufficient. Fig 8 Power supply Circuit schematic Waiting for your suggestion at anytime. - 13 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 12.3 Motherboard interference avoidance Motherboard interference comes from: high-speed data interface (HDMI), the Operating frequency of main chip, DDR, DC-DC power supply. The method of avoiding interference according to the characteristics of various signals is also different. The main methods of interference avoidance include:

1. keeping away from the source of interference;

2. Adding shields to avoid interference leakage;

3. Reasonable layout to eliminate interference. 12.3.1 Interface interference When HDMI uses the 74.2MHz frequency, its 33x frequency is in the 2.4G band of BT, which will seriously interfere with the BT signal. If the HDMI frequency is 148.5MHz, although the 16x frequency is not in the BT band, the isolation of the frequency is not good, and the BT signal will be interfered to some extent. If the distance between the HDMI interface and the BT module on the PCB is less than 5cm, the HDMI output display will interfere with the BT signal, resulting in problems such as BT connection failure and throughput drop. Therefore, keep the location of the BT module away from the HDMI port on the hardware layout to avoid interference. At the same time, if the BT antenna is built-in the motherboard, its placement must also be carefully considered to be far from the interface interference. If the antenna is placed in an incorrect position, even if the module is shielded, the interference signal is coupled through the antenna, which will eventually result in a lower BT throughput. (Note: In addition to interference, the placement of the internal antenna should also evaluate the effect of the metal interface, motherboard, and housing material on the antenna impedance.) Waiting for your suggestion at anytime. - 14 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA Fig 9 HDIM and USB interference 12.3.2 The main chip interferes with DDR Because the main chips operate at about 800MHz or DDR2 operate at 667MHz, 3x frequency of 800MHz and 4x frequency of 667MHz are near 2.4GHz band. It must to place BT modules and antennas far away from the main chip and DDR. It is strongly recommended that the main chip be isolated from the DDR by a shield. As shown in the figure below. Fig 10 Main chip and DDR interference Waiting for your suggestion at anytime. - 15 - E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 12.4 Recommended secondary reflux temperature curve T he number of reflux shall not exceed 2 times, and the tin feeding height of the half hole of the module shall be no less than 1/4. The lead-free reflux curve requirements of BT module products are shown in figure 11 Fig 11 Furnace temperature curve Note:

temperature. 1. The maximum furnace temperature of the module is 260, don't exceed this 2. The gold plating thickness of the module pad is 2u". Waiting for your suggestion at anytime. - 16 - E-mailsales@eardatek.com 13 WARNING 13.1 FCC WARNING ModuleEWN-8250FGT1AA EWN-8258FAT1BA ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothefollowingtwo conditions:

(1)

(2) This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesired operation. Warning:Changesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliance couldvoidtheuser'sauthoritytooperatetheequipment. NOTE:ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigital device,pursuanttoPart15oftheFCCRules.Theselimitsaredesignedtoprovidereasonable protectionagainstharmfulinterferenceinaresidentialinstallation.Thisequipmentgeneratesuses andcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordancewiththe instructions,maycauseharmfulinterferencetoradiocommunications.However,thereisno guaranteethatinterferencewillnotoccurinaparticularinstallation.Ifthisequipmentdoescause harmfulinterferencetoradioortelevisionreception,whichcanbedeterminedbyturningthe equipmentoffandon,theuserisencouragedtotrytocorrecttheinterferencebyoneormoreofthe followingmeasures:

Reorientorrelocatethereceivingantenna. Increasetheseparationbetweentheequipmentandreceiver. Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthe receiverisconnected. Consultthedealeroranexperiencedradio/TVtechnicianforhelp. FCCRadiationExposureStatement:

ThisequipmentcomplieswithFCCradiationexposurelimitssetforthforanuncontrolledenvironment. Thisequipmentshouldbeinstalledandoperatedwithminimumdistance20cmbetweentheradiator&your body. Waiting for your suggestion at anytime.

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E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 13.2 IC Caution Radio Standards Specification RSS-Gen, issue 5

- English:

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 This device must accept any interference, including interference that may cause undesired The equipment complies with IC Radiation exposure limit set forth for uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm the following two conditions:

This device may not cause interference. operation of the device. RF exposure statement:

between the radiator and your body.

- French:

Cet appareil contient des metteurs / rcepteurs exempts de licence conformes aux RSS

(RSS) d'Innovation, Sciences et Dveloppement conomique Canada. Le fonctionnement est soumis aux deux conditions suivantes:

Cet appareil ne doit pas causer d'interfrences. provoquer un fonctionnement indsirable de l'appareil. Dclaration d'exposition RF:

Cet appareil doit accepter toutes les interfrences, y compris celles susceptibles de L'quipement est conforme la limite d'exposition aux radiations de la IC tablie pour un environnement non contrl. Cet quipement doit tre install et utilis avec une distance minimale de 20 cm entre le radiateur et votre corps. Waiting for your suggestion at anytime.

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E-mailsales@eardatek.com ModuleEWN-8250FGT1AA EWN-8258FAT1BA 14 Revision History Revision Release Date Summary Revised By V1.0 2019-11-19 First release V1.1 2020-07-22 the specification Modify the picture, change the module pin size, modify V1.2 2020-08-05 Add packing method Increase current requirement; Modify dimension drawing;

V1.3 2020-8-12 Added EWN-8258FAT1BA Guo.QL Guo.QL Guo.QL Guo.QL Waiting for your suggestion at anytime. - 19 - E-mailsales@eardatek.com Integration instructions for host product manufacturers according to KDB 996369 D03 OEM Manual v01 2.2 List of applicable FCC rules FCC Part 15 Subpart C 15.247 & 15.207 & 15.209 2.3 Specific operational use conditions The module is a Bluetooth module with BLE function. Operation Frequency: 2402-2480MHz Number of Channel: 40 Modulation: GFSK Type: PCB Antenna Gain: 0.5dBi Max. The module can be used for mobile or portable applications with a maximum 0.5dBi antenna. The host manufacturer installing this module into their product must ensure that the final composit product complies with the FCC requirements by a technical assessment or evaluation to the FCC rules, including the transmitter operaition. The host manufacturer has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user's manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. 2.4 Limited module procedures Not applicable. The module is a Single module and complies with the requirement of FCC Part 15.212. 2.5 Trace antenna designs Not applicable. The module has its own antenna, and doesnt need a hosts printed board microstrip trace antenna etc. 2.6 RF exposure considerations The module must be installed in the host equipment such that at least 5mm is maintained between the antenna and users body; and if RF exposure statement or module layout is changed, then the host product manufacturer required to take responsibility of the module through a change in FCC ID or new application. The FCC ID of the module cannot be used on the final product. In these circumstances, the host manufacturer will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. 2.7 Antennas Antenna Specification are as follows:

Type: PCB Antenna Gain: 0.5dBi This device is intended only for host manufacturers under the following conditions:

The transmitter module may not be co-located with any other transmitter or antenna;

The module shall be only used with the internal antenna(s) that has been originally tested and certified with this module. The antenna must be either permanently attached or employa unique antenna coupler. As long as the conditions above are met, further transmitter test will not be required. However, the host manufacturer is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). 2.8 Label and compliance information Host product manufacturers need to provide a physical or e-label stating Contains FCC ID: 2AMM6-

825X1BA with their finished product. 2.9 Information on test modes and additional testing requirements Operation Frequency: 2402-2480MHz Number of Channel: 40 Modulation: GFSK Host manufacturer must perfom test of radiated & conducted emission and spurious emission, etc according to the actual test modes for a stand-alone modular transmitter in a host, as well as for multiple simultaneously transmitting modules or other transmitters in a host product. Only when all the test results of test modes comply with FCC requirements, then the end product can be sold legally. 2.10 Additional testing, Part 15 Subpart B disclaimer The modular transmitter is only FCC authorized for FCC Part 15 Subpart C 15.247 & 15.207 & 15.209 and that the 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. If the grantee markets their product as being Part 15 Subpart B compliant (when it also contains unintentional-radiator digital circuity), then the grantee shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed. Federal Communication Commission Statement (FCC, U.S.) 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 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. 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. FCC Caution:

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. IMPORTANT NOTES Co-location warning:

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. OEM integration instructions:

This device is intended only for OEM integrators under the following conditions:

The transmitter module may not be co-located with any other transmitter or antenna. The module shall be only used with the external antenna(s) that has been originally tested and certified with this module. As long as the conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). Validity of using the module certification:

In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization for this module in combination with the host equipment is no longer considered valid and the FCC ID of the module cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. End product labeling:

The final end product must be labeled in a visible area with the following: Contains Transmitter Module FCC ID: 2AMM6-825X1BA. Information that must be placed in the end user manual:

The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user's manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual.

C5266091_X10_Ed.2 Earda Technologies Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2020-09-01 Subject: Request for Confidentiality FCC ID: 2AMM6-825X1BA To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules

(47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Long-Term Confidentiality Short-Term Confidentiality NOTE 2 Exhibits ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos Users Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) SDR Software / Security Info No No No No No No No NOTE 1 NOTE 1 No No No No No No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. 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. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. 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. 1/1 C5266091_X10_Ed.2 Sincerely, Signature:

Name: Cheng jiu Wang 9/1/2020 Title: QA Supervisor 1/1

Earda Technologies Co.,Ltd Model difference statement Product Name:BT Mesh Module Model No.: EWN-8258FAT1BA, EWN-8250FGT1AA We (Earda Technologies Co.,Ltd , Block A,LianFeng Creative Industry Park,2 JiSheng Road., HuangGe Town,NanSha District,Guangzhou,PRC. ) All the model are the same circuit and RF module, except the RAM and model No. Signature:

Name / title: Chengjiu Wang / QA Supervisor Tel: +86-20-28662868 Email:wangcj@eardatek.com Date: 9.1.2020

C5266091_X8_Ed.1 Letter of Authorization Earda Technologies Co., Ltd Company: Earda Technologies Co., Ltd Address: Block A,LianFeng Creative Industry Park,2 JiSheng Road., HuangGe Town,NanSha District,Guangzhou,PRC. Product Name: BT Mesh Module Model Number: EWN-8258FAT1BA, EWN-8250FGT1AA FCC Identifier:

2AMM6-825X1BA We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Cheng jiu Wang Date: 9/1/2020 Title: QA Supervisor Signature of applicant:

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C5266091_X9_Ed.1 Earda Technologies Co., Ltd Modular Transmitter Approval Request Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Company name: Earda Technologies Co., Ltd FCC ID: 2AMM6-825X1BA Gentlemen, In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 Module Certification Guide v01r04. FCC ID: 2AMM6-825X1BA has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 Modular Certification Guide v01r04 The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal The module must contain power supply regulation on the module The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per Sections 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b) The module must demonstrate compliance in a stand-

alone configuration The module must be labelled with its permanently affixed FCC ID label, or use an electronic display (See KDB Publication 784748 about labelling requirements) The module must comply with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee The module must comply with RF exposure requirements Explanation from Grantee

(do not write yes/no, but explain why product complies/how it is achieved) Yes, The module has its own RF shield Yes, The module has data transmission function and supports 2.4G BLE function. Module with power regulation and support for DC 3.3V input The module meets requirements. the antenna The module has been tested in a stand alone configuration, see report for details The module has its own FCC ID number. See the label for details. The module meets any specific rules or operational requirements applicable to the transmitter The module complies with any applicable RF exposure requirements, as detailed in the instructions. Name: Cheng jiu Wang Date: 2020-09-02 Title: QA Supervisor Signature of applicant:

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