2ANDL-WT3Wi-Fi and Bluetooth Module

Company: Hangzhou Tuya Information Technology Co.,Ltd Address: Room701,Building3,More Center,No.87 GuDun Road, Hangzhou,Zhejiang, China Tel: 86-571-86581786 Fax: 86-571-86581786 WIFI Channel 12 ,13 and 14 Declaration Letter We declare the equipment identified below with regards to Channel 12,13 and 14 capabilities for FCC ID: 2ANDL-WT3 Declaration Product hardware does not have the capability to operate on Channel 12,13 and 14. Product hardware has the capability to operate on Channel 12 ,13 and 14. However, these three channels will be disabled via software and will not be accessible to user. Product hardware has the capability to operate on Channel 12 ,13 and 14. However, all the operated channels can’t be changed in the RF parameter via software. All channels have complied with all of the requirements sets out in FCC Part 15.247. Product hardware has the capability to operate on WiFi Channel 12 ,13 and 14, and meets the requirements of KDB 594280 D01 v02r01. Please note: 1.) By default, this device operates in a mode that is compliant with the U.S. requirements. 2.) This device will also use supplemental information such as geo-location data to determine that it is operating outside the U.S., if necessary, to change its power. Such supplemental data will be derived from the following: Global Navigation Satellite System (GNSS)7 sensors in the device Mobile Country Code (MCC),8 or MCC with a Mobile Network code (MNC), received from a CMRS9 carrier and received directly by a receiver on the device Country information derived from multiple adjacent access points (for example using IEEE Std 802.11d provisions) may be permitted on case-by-case basis Other suitable geo-location data based on IP addresses or other reliable source. Name / Title: / General Manager Signature: Phone: 86-571-86581786 Email: [email protected] Date: May.07,2021

Company: Hangzhou Tuya Information Technology Co.,Ltd Address: Room701,Building3,More Center,No.87 GuDun Road, Hangzhou,Zhejiang, China Tel: 86-571-86581786 Fax: 86-571-86581786 Date (07/04/2022) TUV SUD America Inc. 10 Centennial Drive Peabody, MA 01960, USA Dear Sir or Madam, We, (Hangzhou Tuya Information Technology Co.,Ltd), hereby authorize Jiaxi Xu rom TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151 Heng Tong Road Shanghai 201108 P.R. China, to act as our agent in all matters relating to applications for equipment authorization, including the signing of all documents relating to these matters. Yours sincerely, Name: Title: Manager

Company: Hangzhou Tuya Information Technology Co.,Ltd Address: Room701,Building3,More Center,No.87 GuDun Road, Hangzhou,Zhejiang, China Tel: 86-571-86581786 Fax: 86-571-86581786 Date (07/04/2022) Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Confidentiality Request FCC ID: 2ANDL-WT3 Pursuant to Sections 0.457(d)(1)(ii) and 0.459 of the Commission’s Rules, (Hangzhou Tuya Information Technology Co.,Ltd) hereby requests permanent confidential treatment of information accompanying this application as outlined below: Schematics Block Diagrams Theory of Operation The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457(d)(1)(ii), disclosure of this Application and all accompanying materials will not be made before the date of the Grant for this Application. Yours sincerely, Name: Title: Manager

Company: Hangzhou Tuya Information Technology Co.,Ltd Address: Room701,Building3,More Center,No.87 GuDun Road, Hangzhou,Zhejiang, China Tel: 86-571-86581786 Fax: 86-571-86581786 Date (07/04/2022) Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Modular Approval Request FCC ID: 2ANDL-WT3 The following attestation addresses the requirements to support modular approval: Modular approval requirement Yes (provide brief statement) No * (a) 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 has a metal shied. Refer to the external photo of EUT. (b) 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 Data to the modulation circuit is buffered as described in the operational description provided with the application. (c) The module must contain power supply regulation on the module The module contains its own power supply regulation. Please refer to schematic filed with this application. (d) 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 has a PCB antenna and which permanently attached the module. Refer to the photo of EUT. (e) The module must demonstrate compliance in a stand-alone configuration The module was tested stand-alone as shown in test setup photographs filed with this application. (f) 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 FCC ID is printed on the label of the module. Refer to the label of EUT. (g) The module must comply with all specific rules applicable to the transmitter. The grantee must provide comprehensive instructions to explain compliance requirements The module comply with all specific rules.Refer to the datasheet. Modular approval requirement Yes (provide brief statement) (h) The module must comply with RF exposure requirements Please refer exhibition RF Exposure for the compliance of MPE RF exposure rule. * Please provide a detailed explanation if the answer is “No.” Yours sincerely, Name: Title: Manager

External Photos Documentation Manufacturer: Hangzhou Tuya Information Technology Co.,Ltd Page 1 of 1 Product: Wi-Fi and Bluetooth Module FCC ID: 2ANDL-WT3

Label & Location Label position Label

Internal Photos Documentation Manufacturer: Hangzhou Tuya Information Technology Co.,Ltd Page 1 of 1 Product: Wi-Fi and Bluetooth Module FCC ID: 2ANDL-WT3 Antenna

Report No: 709502204647-00C EMC_SHA_F_R_02.06E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 1 of 2 Rev. 20.00 MPE Calculation Applicant: Hangzhou Tuya Information Technology Co.,Ltd Address: Room701,Building3,More Center,No.87 GuDun Road,Hangzhou,Zhejiang China Product: Wi-Fi and Bluetooth Module FCC ID: 2ANDL-WT3 Model No.: WT3 Reference RF report # 709502204647-00A, 709502204647-00B According to subpart 15.247(i)and subpart §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091) (B) Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f²) 30 30–300 27.5 0.073 0.2 30 300–1,500 / / f/1500 30 1,500–100,000 / / 1.0 30 f = frequency in MHz; * = Plane-wave equivalent power density; According to §1.1310 and §2.1091 RF exposure is calculated. Calculated Formulary: Predication of MPE limit at a given distance S = PG/4πR² = power density (in appropriate units, e.g. mW/cm 2 ); P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); Report No: 709502204647-00C EMC_SHA_F_R_02.06E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 2 of 2 Rev. 20.00 Calculated Data for Wi-Fi Maximum peak output power at antenna input terminal (dBm): 22.23 Maximum peak output power at antenna input terminal (mW): 167.11 Prediction distance (cm): 20 Antenna Gain, typical (dBi): 1.3 Maximum Antenna Gain (numeric): 1.35 The worst case is power density at predication frequency at 20 cm (mW/cm 2 ): 0.04490 MPE limit for general population exposure at prediction frequency (mW/cm 2 ): 1.0 The max power density 0.04490 (mW/cm 2 ) < 1 (mW/cm 2 ) Result: Compliant Calculated Data for BLE Maximum peak output power at antenna input terminal (dBm): 5.07 Maximum peak output power at antenna input terminal (mW): 3.21 Prediction distance (cm): 20 Antenna Gain, typical (dBi): 1.3 Maximum Antenna Gain (numeric): 1.35 The worst case is power density at predication frequency at 20 cm (mW/cm 2 ): 0.00086 MPE limit for general population exposure at prediction frequency (mW/cm 2 ): 1.0 The max power density 0.00086 (mW/cm 2 ) < 1 (mW/cm 2 ) Result: Compliant - TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch Reviewed by: Prepared by: Tested by: _____________________ _____________________ ______________________ Hui TONG Jiaxi XU Wang Yiquan EMC Section Manager EMC Project Engineer EMC Test Engineer Date: 2022-07-04 Date: 2022-07-04 Date: 2022-07-04

EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 1 of 37 Rev. 171.00 FCC - TEST REPORT Report Number : 709502204647-00B Date of Issue: July 04,2022 Model : WT3 Product Type : Wi-Fi and Bluetooth Module Applicant : Hangzhou Tuya Information Technology Co.,Ltd Address : Room701,Building3,More Center,No.87 GuDun Road,Hangzhou,Zhejiang China Manufacturer : Hangzhou Tuya Information Technology Co.,Ltd Address : Room701,Building3,More Center,No.87 GuDun Road,Hangzhou,Zhejiang China Test Result : ◼ Positive  Negative Total pages including Appendices : 37 TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch is a subcontractor to TÜV SÜD Product Service GmbH according to the principles outlined in ISO 17025. TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch reports apply only to the specific samples tested under stated test conditions. Construction of the actual test samples has been documented. It is the manufacturer's responsibility to assure that additional production units of this model are manufactured with identical electrical and mechanical components. The manufacturer/importer is responsible to the Competent Authorities in Europe for any modifications made to the production units which result in non-compliance to the relevant regulations. TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch shall have no liability for any deductions, inferences or generalizations drawn by the client or others from TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch issued reports. This report is the confidential property of the client. As a mutual protection to our clients, the public and ourselves, extracts from the test report shall not be reproduced except in full without our written approval. Report Number: 709502204647-00B EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 2 of 37 Rev. 171.00 1 Table of Contents 1 Table of Contents ................................................................................................................................................................ 2 2 Details about the Test Laboratory ..................................................................................................................................... 3 3 Description of the Equipment under Test ........................................................................................................................ 4 4 Summary of Test Standards .............................................................................................................................................. 6 5 Summary of Test Results ................................................................................................................................................... 7 6 General Remarks ................................................................................................................................................................ 8 7 Test Setups .......................................................................................................................................................................... 9 8 Systems test configuration ............................................................................................................................................... 12 9 Technical Requirement .................................................................................................................................................... 13 9.1 Conducted Emission ................................................................................................................................................ 13 9.2 Conducted peak output power................................................................................................................................ 16 9.3 6dB bandwidth .......................................................................................................................................................... 18 9.4 Power spectral density ............................................................................................................................................. 20 9.5 Spurious RF conducted emissions ........................................................................................................................ 22 9.6 Band edge ................................................................................................................................................................. 26 9.7 Spurious radiated emissions for transmitter ......................................................................................................... 29 10 Test Equipment List ...................................................................................................................................................... 34 11 System Measurement Uncertainty ............................................................................................................................. 35 12 Photographs of Test Set-ups ...................................................................................................................................... 36 13 Photographs of EUT ..................................................................................................................................................... 37 Report Number: 709502204647-00B EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 3 of 37 Rev. 171.00 2 Details about the Test Laboratory Test Site 1 Company name: TÜV SÜD Certification and Testing (China) Co., Ltd. Sh…

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EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 1 of 52 Rev. 171.00 FCC - TEST REPORT Report Number : 709502204647-00A Date of Issue: July 04,2022 Model : WT3 Product Type : Wi-Fi and Bluetooth Module Applicant : Hangzhou Tuya Information Technology Co.,Ltd Address : Room701,Building3,More Center,No.87 GuDun Road,Hangzhou,Zhejiang China Manufacturer : Hangzhou Tuya Information Technology Co.,Ltd Address : Room701,Building3,More Center,No.87 GuDun Road,Hangzhou,Zhejiang China Test Result : ◼ Positive  Negative Total pages including Appendices : 52 TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch is a subcontractor to TÜV SÜD Product Service GmbH according to the principles outlined in ISO 17025. TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch reports apply only to the specific samples tested under stated test conditions. Construction of the actual test samples has been documented. It is the manufacturer's responsibility to assure that additional production units of this model are manufactured with identical electrical and mechanical components. The manufacturer/importer is responsible to the Competent Authorities in Europe for any modifications made to the production units which result in non-compliance to the relevant regulations. TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch shall have no liability for any deductions, inferences or generalizations drawn by the client or others from TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch issued reports. This report is the confidential property of the client. As a mutual protection to our clients, the public and ourselves, extracts from the test report shall not be reproduced except in full without our written approval. Report Number: 709502204647-00A EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 2 of 52 Rev. 171.00 1 Table of Contents 1 Table of Contents ................................................................................................................................................................ 2 2 Details about the Test Laboratory ..................................................................................................................................... 3 3 Description of the Equipment under Test ........................................................................................................................ 4 4 Summary of Test Standards .............................................................................................................................................. 6 5 Summary of Test Results ................................................................................................................................................... 7 6 General Remarks ................................................................................................................................................................ 8 7 Test Setups .......................................................................................................................................................................... 9 8 Systems test configuration ............................................................................................................................................... 12 9 Technical Requirement .................................................................................................................................................... 13 9.1 Conducted Emission ................................................................................................................................................ 13 9.2 Conducted peak output power................................................................................................................................ 16 9.3 6dB bandwidth .......................................................................................................................................................... 17 9.4 Power spectral density ............................................................................................................................................. 21 9.5 Spurious RF conducted emissions ........................................................................................................................ 25 9.6 Band edge ................................................................................................................................................................. 35 9.7 Spurious radiated emissions for transmitter ......................................................................................................... 42 10 Test Equipment List ...................................................................................................................................................... 49 11 System Measurement Uncertainty ............................................................................................................................. 50 12 Photographs of Test Set-ups ...................................................................................................................................... 51 13 Photographs of EUT ..................................................................................................................................................... 52 Report Number: 709502204647-00A EMC_SHA_F_R_02.10E TÜV SÜD Certification and Testing (China) Co., Ltd. Shanghai Branch 3-13, No.151, Heng Tong Road, Shanghai, 200070, P.R. China Phone: +86 21 61410123, Fax:+86 21 61408600 Page 3 of 52 Rev. 171.00 2 Details about the Test Laboratory Details about the Test Laboratory Test Site 1 Company name: TÜV SÜD Certificatio…

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Applicant: Hangzhou Tuya Information Technology Co.,Ltd Product: Wi-Fi and Bluetooth Module FCC ID: 2ANDL-WT3 ©2022 Not to be reproduced, except in its entirety, Page 1 of 3 without the Permission of TÜ V SÜ D Certification and Testing (China) Co., Ltd. Shanghai Branch PHOTOGRAPHS OF TEST SET UP Field Strength and Harmonics Test Setup Radiated Emission Setup 9kHz ~ 30MHz 30MHz ~ 1GHz 1GHz ~ 18GHz Applicant: Hangzhou Tuya Information Technology Co.,Ltd Product: Wi-Fi and Bluetooth Module FCC ID: 2ANDL-WT3 ©2022 Not to be reproduced, except in its entirety, Page 2 of 3 without the Permission of TÜ V SÜ D Certification and Testing (China) Co., Ltd. Shanghai Branch 18GHz ~ 25GHz Applicant: Hangzhou Tuya Information Technology Co.,Ltd Product: Wi-Fi and Bluetooth Module FCC ID: 2ANDL-WT3 ©2022 Not to be reproduced, except in its entirety, Page 3 of 3 without the Permission of TÜ V SÜ D Certification and Testing (China) Co., Ltd. Shanghai Branch Conducted emission Test Setup