WR1 Wi-Fi Module Modular Approval Letter Cover Letter(s)

Company: Hangzhou Tuya Information Technology Co.,Ltd Add: Room701,Building3,More Center,No.87 GuDun Road, Hangzhou,Zhejiang, China Tel: +86-571-86581786 Fax: +86-571-86581786 E-mail: mikeshou@tuya.com Applicant FCCID:

Request Approval Hangzhou Tuya Information Technology Co.,Ltd 2ANDL-WR1 Section15.212ModularTransmitters for Modular RequestforLimitedModularApproval Requirements EUTConditions Comply(Y/N) SingleModularApprovalRequirements Refertoexternalphotos. This module does have shield cover. Allinputstothemodulesare buffered through logic or microprocessorinputs. RefertoSchematics. The module uses the chip W302 12E75M2 with built-in power management components, the module rated power is 3.3V. Refer to Schematics. The modular transmitter has a PCB antenna arrangement for Wi-Fi, Refer to internal photo. Y Y Y Y 1 2 3 4 to the The radio elements of the modular transmitter must have their own shielding. The physical crystal and located tuning capacitors may be external shielded radio elements. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure thatthemodulewillcomplywithpart 15.247 under conditions of excessive data rates or overmodulation. The modular transmitter must have its own power supply regulation. requirements antenna must transmitter must The modular comply with the antenna and transmission system requirements of 15.203, 15.204(b) and 15.204(c). The either be permanently attached or employ a unique antenna coupler (at all connections between the module and the cable).Theprofessionalinstallation provisionof15.203isnotapplicable to modules but can apply to limited modular approvals under paragraph

(b)ofthissection. the antenna, including Y Themodulartransmitteris connectedtothecontrolled boardwhentesting. Pleaserefertosetupphoto and User Manual. Refertothelabel Y 5 6 tested Unless testing The modular transmitter must be in a standalone configuration, i.e., the module must not be inside another device for during compliance with part 15.247 requirements. the transmitter module will be batterypowered,itmustcomply with the AC line conducted requirements found in 15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will be marketed with the module (see 15.27(a)). The length of these lines shall be the length typical ofactualuseor,ifthatlengthis unknown, 10 centimeters to insure that there isnocouplingbetweenthecase of the module and supporting equipment. Any accessories, peripherals, support equipment connected to the module during testing shall be unmodified and commercially available(see15.31(i)). least or at If using a permanently affixed label, the modular transmitter must be labeled with its own FCC identification number, and, if the FCC identification number isnotvisiblewhenthemoduleis installed inside another device, then the outside of the device into which is installed must also display a label referring to the enclosed module. This exterior label can use wording the following: Contains Transmitter the module such as that ModuleFCCID:2ANDL-WR1 Any similar wording expresses the same meaning maybeused.The Grantee may either provide such a label, an example of which must be included in the application for equipmentauthorization, or, mustprovideadequate instructions along with module which explain this requirement. In the latter case, a copy of these instructions must beincludedintheapplicationfor equipmentauthorization. the 7 8 requirements The modular transmitter must complywithanyspecificrulesor operating that ordinarily apply to a complete the transmitter and manufacturer must provide adequateinstructionsalongwith the module to explain any such requirements. A copy of these instructionsmustbeincludedin the application for equipment authorization. The modular transmitter must comply with any applicable RF exposure requirements its finalconfiguration. in Refertomanual Y The EUT comply with any applicable RF exposure requirements in its final configuration. Y SincerelyYours, Signature:

Typed or Printed Name: XiaoDong.Shou Title: Geneal Manager