FCC ID: 2AOKI-WFM920TUSX1 WF-M920T-USX1

Datasheet | 2022 Model WF-M920T-USX1 Datasheet IEEE 802.11 2x2 WiFi 6 Wireless LAN and Bluetooth 5.2 Combo Module

[SoC MT7920TUN]

for 802.11a/b/g/n/ac/ax + Bluetooth 5.2 Version 1.1

<Specification may be changed without prior notice>

Sichuan AI-Link Technology Co., Ltd Copyright Sichuan AI-Link Technology Co., Ltd. All Rights Reserved. Datasheet | 2022 The information and data contained herein is subject to change without notice. While every possible precaution has been taken in the production of this document, it may still contain technical inaccuracies, omissions, and typographical errors, and AI-Link, the document owner, is under no obligation to update or otherwise correct this information. Sichuan AI-Link Technology Co., Ltd. makes no representations or warranties concerning the accuracy or completeness of the contents of this document and assumes no liability of any kind, including the implied warranties of non-infringement, merchantability, or fitness for purposes, concerning the operation or use of AI-Link hardware, software or other products described herein. No license to any intellectual property rights is granted by this document. Terms and limitations applicable to the purchase or use of AI-Links products are outlined in a signed agreement between the parties or AI-Links standard terms and conditions of sales. Any unauthorized copying, alteration, distribution, transmission, performance, display, or other use of this document is strictly prohibited. Reverse engineering or disassembly is also prohibited. Trademarks

, are trademarks of Sichuan AI-Link Technology Co., Ltd. Other product names used in this document are for identification purposes only and may be trademarks of their respective companies or entities. Datasheet | 2022 Below Space Intentionally Left Blank for Customer Confirmation or Comments Typed Name Signature Date Please sign and return this page and the front page to our company by email or fax, or by courier to the following address:

Address Anzhou Industrial Park, Mianyang, Sichuan, P.R.C Company Sichuan AI-Link Technology Co., Ltd. Module Name WF-M920T-USX1 Designed by Reviewed by Approved by Signature HUANG, Wei FAN, Xijun DING, Shuangpeng Date 05/15/2022 05/15/2022 05/15/2022

[AI-Link Confidential] WF-M920T-USX1 Model WF-M920T-USX1 Compatible WLAN Standards IEEE Std. 802.11 a/b/g/n/ac/ax Bluetooth V2.1/4.2/5.2 SoC MT7920TUN Product Size 23mm30mm2.6mm Product Weight 3 g Sichuan AI-Link Technology Co., Ltd. Anzhou Industrial Park, Mianyang, Sichuan, P.R.C

+86-0816-2438701 http://www.ailinkiot.com ai-link@ailinkiot.com All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 4 ~

[AI-Link Confidential] WF-M920T-USX1 Features WLAN IEEE 802.11 a/b/g/n/ac/ax compliant Support 20MHz, 40MHz, 80Mhz bandwidth in 2.4GHz,5GHz band Dual bands 2T2R mode data rate up to 1201Mbps with USB3.0(2.5Gbps) Support MU-MIMO RX Support uplink MU-OFDMA TX and downlink MU-OFDMA RX Support STBC, LDPC, TX Beamformer, and RX Beamformer Greenfield, mixed-mode, legacy modes support IEEE 802.11 d/e/h/i/j/k/mc/r/v/w support Security support for WFA WPA/WPA2/WPA3 personal, WPS2.0, WAPI QoS support of WFA WMM,WMM PS Bluetooth Bluetooth v5.2 with BLE (BT low energy) Supports BT/BLE dual mode Supports BT/Wi-Fi coexistence Supports SCO and eSCO link with re-transmission Supports wide-band speech Supports mSBC and SBC including mono and stereo Supports Packet Loss Concealment (PLC) function for better voice quality Supports LE Isochronous channels Supports LC3 including mono and stereo Supports secure connection with AES128 and ECC256 Channel quality-is drove data rate adaptation Channel assessment and WB RSSI for AFH All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 5 ~

[AI-Link Confidential] WF-M920T-USX1 Revision Record Revision Date Description Edited by V0.1 V0.2 9/5/2022 9/26/2022 Premier Release Add pictures HUANG, Wei HUANG, Wei V0.3 10/25/2022 Update target power HUANG, Wei V0.4 11/15/2022 Modify the 38th pin define HUANG, Wei V0.5 12/6/2022 Modify output power HUANG, Wei V1.0 01/05/2023 Add SRRC ID V1.1 05/15/2023 Add sequence HUANG, Wei HUANG, Wei

* Private Preview Only All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 6 ~

[AI-Link Confidential] WF-M920T-USX1 Contents 1 General Description ............................................................................................ 8 1.1 System Overview ............................................................................................................................... 8 1.2 System Properties ............................................................................................................................. 8 1.3 Diagram ................................................................................................................................................ 9 2 Mechanical Dimensions ................................................................................... 10 2.1 Mechanical Outline Drawing ...................................................................................................... 10 2.2 Pin definitions .................................................................................................................................. 10 2.4 Product Photos ............................................................................................................................... 11 2.5 Label Information ........................................................................................................................... 12 3 RF Characteristics .............................................................................................. 12 3.1 Wi-Fi Subsystem ............................................................................................................................. 12 3.2 Bluetooth Subsystem .................................................................................................................... 14 4 Interface ............................................................................................................. 14 4.2 USB Interface ................................................................................................................................... 14 5 Electrical Current Consumption ...................................................................... 15 5.1 WLAN Current Consumption ..................................................................................................... 15 5.2 Bluetooth Current Consumption .............................................................................................. 15 6 Software Information ....................................................................................... 15 6.1 RF Driver ............................................................................................................................................ 15 6.2 Normal Driver .................................................................................................................................. 15 7 Reference Design .............................................................................................. 16 7.1 Recommend PCB Layout Decal ................................................................................................. 16 8 Timing Diagram ................................................................................................ 17 8.1 Chip power on sequence ............................................................................................ 17 8.2 Reset sequence............................................................................................................... 18 9 RF Connector Dimension ................................................................................. 18 10 Package, Storage & Disposal .......................................................................... 19 10.1 Package ........................................................................................................................................... 19 10.2 Storage ............................................................................................................................................ 20 9.3 Disposal ............................................................................................................................................. 20 11 Appendix ............................................................................................................ 20 12 Refelow Standard Condition ........................................................................... 21 13 Certification Information: ................................................................................ 21 All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 7 ~

[AI-Link Confidential] WF-M920T-USX1 1 General Description 1.1 System Overview Model WF-M920T-USX1is a highly integrated WiFi module by AI-Link, based on the MediaTek SoC MT7920TUN, featuring a 2x2 a/b/g/n/ac/ax dual-band Wi-Fi, and a Bluetooth v5.2 subsystems. The finely tuned hardware architecture and baseband algorithms provide superlative RF performance, as well as low power consumption. Intelligent MAC design powers a highly efficient offload engine; the hardware supports standard features of higher level of security, performance, and conforms most international regulations, offering the great performance at any time, in any circumstance. 1.2 System Properties Dimension Typically, 23mm x 30mm x 2.6mm Chipset MT7920TUN Operating 2.4GHz:2.412~2.462 GHz Frequency 5 GHz5.180~5.825GHz Antenna 3 IPEX Connector Operating Voltage PCB Information Peripheral Interface 3.3V5%

4-layers design (0.8+/-0.15mm) WIFI&BT@USB NoteUSB uses frequency reduction processing, the rate is 2.5Gbps 11b: 1, 2, 5.5 and 11Mbps Rate 11a/g: 6, 9, 12, 18, 24, 36, 48 and 54 Mbps 11n: MCS0~15, up to 300Mbps 11ac: MCS0~9, Nss=2, BW=80MHz up to 866.7Mbps 11ax: MCS0~11, Nss=2, BW=40MHz up to 573.5Mbps 11ax: MCS0~11, Nss=2, BW=80MHz up to 1201Mbps All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 8 ~

[AI-Link Confidential] WF-M920T-USX1

-10 to +70

-40 to +85 HBM IO:2000V RF:6000V Operating Temperature Storage Temperature ESD Protection 1.3 Diagram The hardware architecture for the module is shown in Figure 1. The AI-

Links WF-M920T-USX1module Complies with IEEE standards 802.11a/b/g/n/ac/ax; it also supports 2x2 Multi-User Multiple-Input Multiple-Output (known as MU-MIMO) and could reach up to data rate of 1201 Mbps. Meanwhile, it is also a module of Bluetooth v5.2 and Wi-

Fi Dual-band. Figure 1: WF-M920T-USX1Block Diagram All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 9 ~

[AI-Link Confidential] WF-M920T-USX1 2 Mechanical Dimensions 2.1 Mechanical Outline Drawing Typical Dimension (W x L x T): 23.0mmx 30.0mm x 2.6mm General tolerance: 0.2mm PCB Thickness: 0.8mm (+/-0.15mm) Top View Bottom View 2.2 Pin definitions Pin Define DBG_TX 1 Description DEBUG, WIFI FW LOG, Uart Tx Pin Define 31 GND Description GND 2 3 4 5 6 7 8 NC GND NC NC GND GPIO13 Not connect GND Not connect Not connect GND 32 33 34 35 36 USB DP USB2.0 data D+

USB DM USB2.0 data D-

GND NC GND Not connect BT WAKE GPIO0, , 10K RESET PMU RESET, 10K 37 BT stereo GPIO3, BT GND 9 10 GND 3.3V GND GND POWER 2A 5%

38 GPIO12 Timing Synchronization 39 40 GND NC Function(TSF) GND Not connect 11 3.3V POWER 2A 41 UART_RTS GPIO11 12 GND 5%

GND 42 UART_RX GPIO14 All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 10 ~

[AI-Link Confidential] WF-M920T-USX1 13 14 15 16 17 18 19 20 21 22 23 NC NC Not connect Not connect PCM_SYNC GPIO6, PCM SYNC PCM_OUT GPIO7, PCM OUT GND GND WIFI WAKE GPIO1, WIFI , 10K

. PCM CLK GPIO10, PCM CLK PCM_IN GPIO8, PCM IN NC GND Not connect GND U3-TXN USB3.0 TXN, RXN. USB3.0 2.5Gbps 43 44 45 46 47 48 49 50 51 52 53 UART_TX GPIO15 GND GND GND GND DBG_TX DEBUG, BT FW LOG, Uart Tx NC GND NC GND GND NC GND GPIO4 Not connect GND Not connect GND GND Not connect GND 24 U3-TXP USB3.0 TXP, RXP. 54 GND GND 25 26 27 28 29 USB3.0 2.5Gbps GND NC NC GND GND Not connect Not connect GND U3-RXN USB3.0 RXN, TXN. USB3.0 2.5Gbps 55 56 57 58 59 NC GND GND NC GND Not connect GND GND Not connect GND 30 U3-RXP USB3.0 RXP, TXP. USB3.0 2.5Gbps 2.4 Product Photos TOP View BOT View All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 11 ~

[AI-Link Confidential] WF-M920T-USX1 2.5 Label Information Top Label WIFI MAC information DM code Part numberWF-M920T-USX1 SRRC ID Company information BT Mac =WIFI Mac + 1 3 RF Characteristics 3.1 Wi-Fi Subsystem Items WLAN Standard Contents IEEE 802.11a/b/g/n/ac/ax Frequency 2.400 GHz ~ 2.483.5 GHz (2.4 GHz) Range 5.150 GHz~5.850 GHz (5 GHz) Channels CH1 to CH11 @ 2.4G CH36 to CH165 @ 5G 802.11b: DBPSK, DQPSK ,CCK 802.11 a/g/n: BPSK, QPSK, 16QAM, 64QAM 802.11 ac: BPSK, QPSK, 16QAM, 64QAM,256QAM Modulation Mode 11ax: BPSK, QPSK, 16QAM, 64QAM,256QAM,1024QAM Power Value 802.11b /11Mbps: 16dBm2 Output Power 802.11g /54Mbps: 15dBm2 Min& EVM 802.11a /54Mbps: 15dBm2 802.11n HT20 /MCS7: @2.4G 14dBm2

-28dB 802.11n HT20 /MCS7: @5G 14dBm2

-28dB All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 12 ~

EVM

-10dB

-25dB

-25dB

[AI-Link Confidential] WF-M920T-USX1 Items Contents 802.11n HT40 /MCS7: @2.4G 14dBm2

-28dB 802.11n HT40 /MCS7: @5G 14dBm2

-28dB 802.11ac VHT20 /MCS8: @5G 14dBm2

-32dB 802.11ac VHT40 /MCS9: @5G 13dBm2

-32dB 802.11ac VHT80 /MCS9: @5G 13dBm2 -32dB 802.11ax HE20 /MCS11: @2.4G 13dBm2 -35dB 802.11ax HE20 /MCS11: @5G 12 dBm2 -35dB 802.11ax HE40 /MCS11: @2.4G 13dBm2 -35dB 802.11ax HE40 /MCS11: @5G 12 dBm2

-35dB 802.11ax HE80 /MCS11: @5G 12 dBm2 -35dB Rate Type 802.11b /11Mbps @2.4G PER8%

802.11g /54Mbps @2.4G 802.11a /54Mbps @5G Receiver Sensitivity

@2.4G PER 802.11n HT20 /MCS7 @2.4G 802.11n HT20 /MCS7 @5G 802.11n HT40 /MCS7 @2.4G 802.11n HT40 /MCS7 @5G 10%

802.11ac VHT20 /MCS8 @5G

@5G PER 802.11ac VHT40 /MCS9 @5G 10%

802.11ac VHT80 /MCS9 @5G 802.11ax HE20 /MCS11 @2.4G 802.11ax HE20 /MCS11 @5G 802.11ax HE40 /MCS11 @2.4G 802.11ax HE40 /MCS11 @5G 802.11ax HE80 /MCS11 @5G Max

-85dBm

-72dBm

-71dBm

-68dBm

-68dBm

-67dBm

-67dBm

-64dBm

-58dBm

-56dBm

-57dBm

-57dBm

-55dBm

-55dBm

-51dBm All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 13 ~

[AI-Link Confidential] WF-M920T-USX1 3.2 Bluetooth Subsystem Items Contents Host Interface USB TX Characteristics Channel BREDR:CH0 toCH78 LE:CH0 to CH39 Modulation GFSK/4-DQPSK 8PSK TX Power RX Characteristics Rate Type Min(dBm) Typ(dBm) Max(dBm) 1DH5 2DH5 3DH5 1LE 2LE 4 4 4 4 4 8 8 8 8 8 12 12 12 12 12 Rate Type Min(dBm) Typ(dBm) Max(dBm) 1DH5 BER<0.1%

2DH5 RX BER<0.01%

3DH5 BER<0.01%

1LE PER<30.8%

2LE PER<30.8%

-92

-70

-90

-70

-85

-70

-92

-70

-89

-70

* Note: [1] Typical RF Output Power are tested at room temp.25 4 Interface 4.2 USB Interface The module supports the USB (USB v3.0 specification) device port, Use USB as the host interface for Bluetooth. And USB uses frequency reduction processing, the rate is 2.5Gbps. All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 14 ~

[AI-Link Confidential] WF-M920T-USX1 5 Electrical Current Consumption 5.1 WLAN Current Consumption Description Power Consumption WIFI TX Power ConsumptionWIFI RX

*Note:

Value 898 186 Unit mA mA

[1] Results are measured provided VDD33 is 3.3V. TX power is measured at the antenna port. The temperature is 25oC.

[2] The duty cycle for TX/RX measurement is 100%.

[3] The chip variation is +/- 25%. 5.2 Bluetooth Current Consumption Description Power ConsumptionBT TX Power ConsumptionBT RX

*Note:

Value Unit 88 27 mA mA

[1] Results are measured provided VDD33 is 3.3V. TX power is measured at the antenna port. The temperature is 25oC.

[2] The duty cycle for TX/RX measurement is 100%.

[3] The chip variation is +/- 25%

6 Software Information 6.1 RF Driver QAtool 6.2 Normal Driver Linux

*Note:

The software (driver) package version is subject to change without notice because it may encounter several updates. It is advised to consult with AI-Link for the best right driver package. All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 15 ~

[AI-Link Confidential] WF-M920T-USX1 7 Reference Design 7.1 Recommend PCB Layout Decal TOP VIEW All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 16 ~

[AI-Link Confidential] WF-M920T-USX1 8 Timing Diagram 8.1 Chip power on sequence RESET(PMU_EN) 3.3V All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 17 ~

[AI-Link Confidential] WF-M920T-USX1 8.2 Reset sequence 9 RF Connector Dimension Figure 2: The dimensions of the connector All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 18 ~

[AI-Link Confidential] WF-M920T-USX1 10 Package, Storage & Disposal 10.1 Package All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 19 ~

[AI-Link Confidential] WF-M920T-USX1 10.2 Storage All electronic components must be stored in a clean, well-ventilated place free of corrosive gas. Unless otherwise specified, the temperature and humidity of the storage place must meet below requirements:

Temperature-40~85 Humidity20%~75%

Humidity sensitivity grade MSL 3 Container Requirement: products shall be placed in a container well-

functioning as an electrostatic shielding. 9.3 Disposal The waste disposal of this product and the package should comply with the applicable local/regional /state/ international regulations. 11 Appendix Key Components List N O. 1 Name Model Specification Manufacturer IC MT7920TUN MediaTek 2 PCB JUI7.820.1332 series 4L 0.8mm 3 Crystal 3225 40M 3225 40M KX IQE Sunlord RJX Hosonic ECEC TKD All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 20 ~

[AI-Link Confidential] WF-M920T-USX1 12 Refelow Standard Condition Heating zone: temperature: < 150 C, time: between 60 and 90 seconds, the slope is controlled between 1 ~ 3 C / S. Preheating constant temperature zone: temperature: 150 C ~ 200 C, time: between 60-120 seconds, slope between 0.3-0.8. Reflow soldering area: peak temperature 235 C ~ 250 C

(recommended peak temperature < 245 C), time 30-70 seconds. Cold area: temperature: 217 C ~ 170 C, slope between 3 ~ 5 C / S. The solder is lead-free solder in tin-silver copper alloys/Sn&Ag&Cu Lead-free solder (SAC305). 13 Certification Information:

This product is a radio transmitter module for restricted non-standalone operation. The module bearing CMIIT ID:2022AP19235(M) approval does not mean that the final equipment in which the module is embedded or used complies with relevant radio management technical regulations or standards. The final equipment of the specific manufacturer is responsible for the technical compliance with the relative local or nationwide radio management technical regulations or standards. All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 21 ~

[AI-Link Confidential] WF-M920T-USX1 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-WFM920TUSX1 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. All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 22 ~

[AI-Link Confidential] WF-M920T-USX1 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. All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 23 ~

[AI-Link Confidential] WF-M920T-USX1 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-WFM920TUSX1 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 All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 24 ~

[AI-Link Confidential] WF-M920T-USX1 du mot contient , ou dune formulation similaire allant dans le mme sens et qui va comme suit : Contient IC: 23460-WFM920TUSX1est 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 norme e.i.r.p. limite;

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 cas ch ant; et All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 25 ~

[AI-Link Confidential] WF-M920T-USX1 The requirement for KDB 996369 D03:

1.1 List of applicable FCC rules FCC Part 15.247, FCC Part 15.407. 1.2 Summarize the specific operational use conditions EUT use PIFA antenna. 1.3 Limited module procedures The module is a single module, so this requirement is not applicable to the product. 1.4. Trace antenna desig Not support 1.5 RF exposure considerations The host device can be used as mobile device. 1.6 Antennas 2.4G PIFA antenna :3.66dBi maxExternal type 5G PIFA antenna :3.55dBi maxExternal type 1.7 Label and compliance information If this certified module is installed inside the host device, then the outside of the host must be labeled with Contains FCC ID: 2AOKI-WFM920TUSX1 All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 26 ~

[AI-Link Confidential] WF-M920T-USX1

. 1.8 Information on test modes and additional testing requirements The host manufacturer can use the software of MT7961 QA to make the WIFI transmit continuously. 1.9. Additional testing, Part 15 Subpart B disclaimer The module only complies with the FCC Part 15.247 and 15.407. If the module is installed in the host device, the host manufacturer is responsible for the compliance to any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. For example, if the host manufacturer markets their product as being Part 15 Subpart B compliant (when it also contains unintentional-radiator digital circuity), then the host manufacturer shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.

- Below Space Intentionally Left Blank All rights reserved Sichuan AI-Link Technology Co., Ltd ~ 27 ~

|@ CCXXxxYYyyyZzW WF-M920T-USX1 1C:23460-WFM920TUSX1 FCC ID:2AOKI-WFM920TUSX1 CMIIT ID: 2022AP19235(M) Sichuan Al-Link Technology Co.,Ltd Hil a}

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Sichuan AI-Link Technology Co., Ltd. Request for Confidentiality Date: March 27, 2024 Subject: Confidentiality Request for: FCC ID: 2AOKI-WFM920TUSX1 Pursuant to FCC 47 CFR 0.457(d) and 0.459 and IC RSP-100, Section 12.4, 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:

______ Caixia Hu ___________ __________________________

(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 https://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. 041521-14

Sichuan AI-Link Technology Co., Ltd. Certification Application Attestation Statements Date: March 27, 2024 American Certification Body, Inc. 313 Park Avenue Suite 300 Falls Church, VA 22046 To Whom It May Concern:

Statement for 47 CFR section 2.911(d)(5)(i) Sichuan AI-Link Technology Co., Ltd. certifies that as of the date of the application the equipment for which authorization is sought is not covered equipment1 prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, including affiliates or subsidiaries of the named companies, the applicant must include an explanation on why the equipment is not covered equipment. Additional Explanation: <N/A>

Statement for 47 CFR section 2.911(d)(5)(ii) Sichuan AI-Link Technology Co., Ltd. (the applicant) certifies that, as of the date of the filing of this application, the applicant - is / - is not identified on the Covered List as an entity producing covered equipment. Thank you, By:

Title:

Company:

_Sichuan AI-Link Technology Co.,Ltd._ _ Telephone: +15881437297 _______ __________________________

(Print name) _____ Manager ________ ____ Caixia Hu _ _ ____

(Signature2) 1 - The Commissions Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commissions website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes covered equipment. https://www.fcc.gov/supplychain/coveredlist . 2 - Letters should be placed on appropriate letterhead. 021423-17 rev 4

FCC US Agent, LLC TO: American Certification Body, Inc. 313 Park Avenue Suite 300 Falls Church, VA 22046 ATTENTION: FCC Certification Section 2.911(d)(7) Information Designated U.S. Agent Company Name: FCC US Agent, LLC Contact Name: Tim Payne Street Address: 3722 Illinois Avenue, Saint Charles, IL, 60174, USA City/Province/Zip: Saint Charles/ILLINOIS/60174 Telephone No: 708-571-3148 Email: Support@FCCUSAgent.com FRN #: 0033402884 This letter is to confirm that we (FCC US Agent, LLC) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. U.S. Agent Signature:

Date:

03/27/2024 Signed by (Printed Name/Title): Tim Payne/Manager The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-

related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Company name: Sichuan AI-Link Technology Co., Ltd. Grantee Code: 2AOKI FRN #: 0027073196 Contact Name: Caixia Hu Street Address: Anzhou, Industrial park, Mianyang, Sichuan, China City/Province/Zip: Mianyang/Sichuan Telephone No: 15881437297 Email: caixia.hu@changhong.cm FCC ID: 2AOKI-WFM920TUSX1 Applicant Signature1:

Date: 2024/03/27 Signed by (Printed Name/Title): Caixia Hu / Manager 1 - Letters must be placed on appropriate letterhead. The signee for the applicant must be one of the following: Applicant (grantee) contact of record in the FCCs authorization system, or authorized officers or employee of the applicant (grantee).

Sichuan AI-Link Technology Co., Ltd. Authority to Act as Agent Date: March 27, 2024 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: _____2025/03/25_____ By:

Title:

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

__________________________ ____ __Caixia Hu _________

(Print name) __ +15881437297 ___ _______ ____ Manager __ _____

(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 Modular/Limited Modular Approval Date: March 28, 2024 Subject: Manufacturers Declaration for - Modular Approval Confidentiality Request for: FCC ID: 2AOKI-WFM920TUSX1

- 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.

- 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 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 mobile device exclusion levels as shown in the RF exposure information filed with this application.

- YES - NO(*) 070920-02b 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 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 070920-02b 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 Sincerely,

- 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. By: _______________________ ________ Caixia Hu ____________

(Signature/Title1)

(Print name) 1 - Must be signed by applicant contact given for applicant on the FCC site, or by the authorized agent if an appropriate 070920-02b

Sichuan AI-Link Technology Co., Ltd. Declaration Letter We Sichuan AI-Link Technology Co., Ltd.hereby declare that the product is capable of operating with WIFI&Bluetooth Module/WF-M920T-USX1 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: March 25, 2024

Caixia Hu Sichuan AI-Link Technology Co.,Ltd. Tel: +15881437297 Email: caixia.hu@changhong.cm