2BEWXSF254Smart Hummingbird Feeder

CertificationDesignatingaUSAgentforServiceofProcess To:FederalCommunicationsCommissionDate:05-12-2024 7435OaklandMillsRoad,Columbia,MD21046,USA Ref:AttestationStatement–Part2.911(d)(7)filing FCCID：2BEWXSF254 ZhejiangLingzhuTechnologyCo.,Ltd.(“theapplicant”)certifiesthatasofthedateofthefilingofthe application, TuyaSmartInc.(“theagent”)isourdesignatedU.S.agent. Weacknowledgetheapplicant’sconsentandthedesignatedagentforserviceofprocess’sobligation toacceptserviceofprocess.Theapplicantacceptstomaintainanagentforserviceofprocessforno lessthanoneyearafterthegranteehasterminatedallmarketingandimportationortheconclusionof anyCommissionrelatedproceedinginvolvingtheequipment.Theapplicantfurtheracknowledgesitis ourresponsibilitytoinformtheFCCwhenevertheagentinformationchanges. APPLICANT CompanyName:ZhejiangLingzhuTechnologyCo.,Ltd. ContactPerson:LinyunLi Address:Room302,No1BuildingHuaceCenter,XihuDistrict,HangzhouCity,ZhejiangProvince,China Tel.:0571-86581786 Email:[email protected] FCCFRN:0034841213 U.S.Agent CompanyName:TuyaSmartInc. ContactPerson:JingchaoWang Address:160GreentreeDrive,Suite101,Dover,DELAWARE,19904 Tel.:818-699-5031 Email:[email protected] FCCFRN:0034102913 Sincerelyyours, TheApplicantTheAgent CompanyNameZhejiangLingzhuTechnologyCo.,Ltd.TuyaSmartInc. ContactPersonLinyunLiJingchaoWang Signature

ZhejiangLingzhuTechnologyCo.,Ltd. To:FederalCommunicationsCommissionDate:2024/12/05 7435OaklandMillsRoad Columbia,MD21046 USA Attestation Section2.911(d)(5)(i)andSection2.911(d)(5)(ii) (KDB986446D01CoveredEquipment) Section2.911(d)(5)(i) ZhejiangLingzhuTechnologyCo.,Ltd.(“theapplicant”)certifiesthattheequipment forwhichauthorizationissoughtisnot“covered”equipmentprohibitedfromreceiving anequipmentauthorizationpursuanttosection2.903oftheFCCrules. Section2.911(d)(5)(ii) ZhejiangLingzhuTechnologyCo.,Ltd.(“theapplicant”)certifiesthat,asofthedate ofthefilingoftheapplication,theapplicantisnotidentifiedontheCoveredListasan entityproducing“covered”equipment. KDB986446D01v03sectionB,2a, ZhejiangLingzhuTechnologyCo.,Ltd.(“theapplicant”)certifiesthattheequipment forthisapplicationdoesnotcontainKasperskycybersecurityoranti-virussoftware. TypeofEquipmentsubjecttoFCCCertification: Thermostat FCCID:2BEWXSF254 Ifyouhaveanyquestions,pleasefeelfreetocontactme. ContactPerson:LinyunLi PositionintheCompany:ZhejiangLingzhuTechnologyCo.,Ltd. EmailAddress:[email protected] Telephone:057186581786 ___________________________ Signatory (signatureoftheapplicant)

Request for Confidentiality Zhejiang Lingzhu Technology Co., Ltd. Date: _2024-12-05 Subject: Confidentiality Request for: _____ FCC: 2BEWXSF254 _____ Pursuant to FCC 47 CRF 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 RequestedExhibit ShortTermPermanentBlockDiagrams ShortTermExternalPhotos ShortTermPermanent* 1 InternalPhotos ShortTermPermanentOperationDescription/TheoryofOperation ShortTermPermanentPartsList&Placement/BOM ShortTermPermanentSchematics ShortTermTestSetupPhotos ShortTermPermanent*User’sManual *Note: ______(Insert Explanation as Necessary)______ __Zhejiang Lingzhu 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 _180__ 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 TCB in the event information regarding the product or the product is made available to the public. TCB will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-1705. NOTE for Industry Canada Applications: The applicant understands that until such time that IC distinguishes between Short Term and Permanent Confidentiality, either type of marked exhibit above will simply be marked Confidential when submitted to IC. Sincerely, By:Manager Linyun Li (Signature/Title 2 )(Print name)

ZhejiangLingzhuTechnologyCo.,Ltd. (2024-12-05) EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:LETTEROFAGENTAUTHORIZATION FCCID ： 2BEWXSF254 ToWhomItMayConcern: We,theundersigned,herebyauthorize(SunnySunatEurofinsTATechnology(Shanghai)Co., Ltd.)toactonourbehalfinallmattersrelatingtoapplicationforequipmentauthorization, includingthesigningofalldocumentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseAct of1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, Signature: LinyunLi ZhejiangLingzhuTechnologyCo.,Ltd.

ModelDifferenceStatement We,(ZhejjiangLingzhuTechnologyCO.,Ltd.)certifythe ProductDescription:SmartHummingbirdFeeder ModelNo.: SF254-WBA3 、 SF254-WBB3 、 SF254-WBC3 、 SF254-WBD3 、 SF254-WBE3 、 SF254-WBF3 SF254-WBA3A 、 SF254-WBB3A 、 SF254-WBC3A 、 SF254-WBD3A 、 SF254- WBE3A、SF254-WBF3A SF254-WBA2、SF254-WBB2、SF254-WBC2、SF254-WBD2、SF254-WBE2、 SF254-WBF2 SF254-WBA4 、 SF254-WBB4 、 SF254-WBC4 、 SF254-WBD4 、 SF254-WBE4 、 SF254-WBF4 Weherebydeclare: Allabovemodelsareidenticaltoeachother,exceptfordifferentmodel numbers,sensor,colorandtinyenclosuredifference,suchasdifferent chamfering.Thesedifferencesarenotrelatedtotheradiofrequency function.2,3，4inmodelnamefordifferentsensorandA,B,Cinmodel namefordifferentcolorandtinyenclosuredifference. Sincerely, Signature: ContactPerson:LiLinyun Date:2024-11-06

EUT Appearance Report No.: R2409A1319 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 1 of 5 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. EUT Appearance EUT Appearance Report No.: R2409A1319 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 2 of 5 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. EUT Appearance Report No.: R2409A1319 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 3 of 5 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. a: EUT EUT Appearance Report No.: R2409A1319 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 4 of 5 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. EUT Appearance Report No.: R2409A1319 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-032E Page 5 of 5 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. b: Battery Picture 1: Constituents of EUT

图纸发布类别 正式归档图纸 版本 1.0 中性 原始版本 物料编号变更者变更时间版本升级原因描述 智能蜂鸟喂食器 接合方式 印刷色 材质 加工工艺 SF254-WBA3 SF254-WBA3 -智能蜂鸟喂 食器 -中性（英文）-铭牌 大川 张路路 40x25mm 40x25mm 成品尺寸 公差： 展开图尺寸： ±0.1mm 40mm 25mm 字号5pt 字号4pt 高度4mm 宽度按比例 合成纸不干胶 单黑 打印机打印 / 制作规范（单位：mm） 中文字体：思源黑体 英文字体：Arial 7mm 5mm 2.65mm 20240919 变量SN / MAC SN: ZR118061234567 MAC: AA:BB:CC:DD:EE:FF Zhejiang Lingzhu Technology Co., Ltd. Smart Hummingbird Feeder Model: SF254-WBA3 Input: 5V 1.5A FCC ID: 2BEWXSF254 SN: ZR118061234567 MAC: AA:BB:CC:DD:EE:FF Zhejiang Lingzhu Technology Co., Ltd. Smart Hummingbird Feeder Model: SF254-WBA3 Input: 5V 1.5A FCC ID: 2BEWXSF254

Internal photo FCC ID: 2BEWXSF254 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 1 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo Internal photo FCC ID: 2BEWXSF254 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 2 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo FCC ID: 2BEWXSF254 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 3 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo FCC ID: 2BEWXSF254 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 4 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo FCC ID: 2BEWXSF254 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 5 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo FCC ID: 2BEWXSF254 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 6 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo FCC ID: 2BEWXSF254 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 7 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Internal photo FCC ID: 2BEWXSF254 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-033E Page 8 of 8 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd.

Prepared by: Liu Wei Approved by: Xu Kai Eurofins TA Technology (Shanghai) Co., Ltd. Building 3, No.145, Jintang Rd, Pudong Shanghai, P.R.China TEL: +86-021-50791141/2/3 FAX: +86-021-50791141/2/3-8000 EMC TEST REPORT Applicant Zhejiang Lingzhu Technology Co., Ltd. FCC ID 2BEWXSF254 Product Smart Hummingbird Feeder Model SF254-WBA3; SF254-WBB3; SF254-WBC3; SF254-WBD3; SF254-WBE3; SF254-WBF3; SF254-WBA3A; SF254-WBB3A; SF254-WBC3A; SF254-WBD3A; SF254- WBE3A; SF254-WBF3A; SF254-WBA2; SF254-WBB2; SF254-WBC2; SF254-WBD2; SF254-WBE2; SF254-WBF2; SF254-WBA4; SF254-WBB4; SF254-WBC4; SF254-WBD4; SF254-WBE4; SF254-WBF4 Report No. R2409A1319-E1 Issue Date December 19, 2024 Eurofins TA Technology (Shanghai) Co., Ltd. tested the above equipment in accordance with the requirements in FCC Code CFR47 Part15B (2023)/ ANSI C63.4-2014. The test results show that the equipment tested is capable of demonstrating compliance with the requirements as documented in this report. EMC Test Report Report No.: R2409A1319-E1 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-06-001E Page 2 of 19 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Table of Contents 1 Test Laboratory ................................................................................................................................. 4 1.1 Notes of the Test Report ............................................................................................................ 4 1.2 Test Facility ................................................................................................................................ 4 1.3 Testing Location......................................................................................................................... 4 2 General Description of Equipment Under Test ................................................................................. 5 2.1 Applicant and Manufacturer Information ................................................................................... 5 2.2 General Information ................................................................................................................... 5 2.3 Applied Standards ..................................................................................................................... 7 2.4 Test Mode .................................................................................................................................. 8 3 Test Case Results ............................................................................................................................. 9 3.1 Radiated Emission ..................................................................................................................... 9 3.2 Conducted Emission ................................................................................................................ 14 4 Uncertainty Measurement ............................................................................................................... 16 5 Main Test Instruments ..................................................................................................................... 17 ANNEX A: The EUT Appearance ........................................................................................................... 18 ANNEX B: Test Setup Photos ................................................................................................................ 19 EMC Test Report Report No.: R2409A1319-E1 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-06-001E Page 3 of 19 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Summary of measurement results Number Test Case Clause in FCC Rules Conclusion 1 Radiated Emission FCC Part15.109, ANSI C63.4-2014 PASS 2 Conducted Emission FCC Part15.107, ANSI C63.4-2014 NA Note 1 Date of Testing: September 13, 2024 ~ November 5, 2024 Date of Sample Received: September 11, 2024 Note: 1. The equipment is not connected to the public network, so test items do not apply. 2. All indications of Pass/Fail in this report are opinions expressed by Eurofins TA Technology (Shanghai) Co., Ltd. based on interpretations and/or observations of test results. Measurement Uncertainties were not taken into account and are published for informational purposes only. EMC Test Report Report No.: R2409A1319-E1 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-06-001E Page 4 of 19 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. 1 Test Laboratory 1.1 Notes of the Test Report This report shall not be reproduced in full or partial, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. The results documented in this report apply only to the tested sample, under the conditions and modes of operation as described herein. Measurement Uncertainties were not taken into account and are published for informational purposes only. This report is written to support regulatory compliance of the applicable standards stated above. 1.2 Test Facility FCC (Designation number: CN1179, Test Firm Registration Number: 446626) Eurofins TA Technology (Shanghai) Co., Ltd. has been listed on the US Federal Communications Commission list of test facilities recognized to perform measurements. A2LA (Certificate Number: 3857.01) Eurofins TA Technology (Shanghai) Co., Ltd. has been listed by American Association for Laboratory Accreditation to perform measurement. 1.3 Testing Location Company: Eurofins TA Technology (Shanghai) Co., Ltd. Address: Building 3, No.145, Jintang Rd, Pudong Shanghai, P.R.China City: Shanghai Post code: 201201 Country: P. R. China Contact: Xu Kai Telephone: +86-021-50791141/2/3 Fax: +86-021-50791141/2/3-8000 Website: https://www.eurofins.com/electrical-and-electronics E-mail: [email protected] EMC Test Report Report No.: R2409A…

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EMC Test Setup Report No.: R2409A1319 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-031E Page 1 of 2 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. Part 15B Test Setup 30MHz-1GHz EMC Test Setup Report No.: R2409A1319 Eurofins TA Technology (Shanghai) Co., Ltd. TA-MB-01-031E Page 2 of 2 This report shall not be reproduced except in full, without the written approval of Eurofins TA Technology (Shanghai) Co., Ltd. 1GHz-18GHz Picture 1: Radiated Emission Test Setup