2BGFS-HB035DSmart Bay Light

ShenzhenSenterEcommerceCo.Ltd U.S.AgentLetterofAttestation To:FederalCommunicationsCommission 7435OaklandMillsRoad,Columbia,MD21046,USA Date:Dec.26,25 Ref:AttestationStatement–Part2.911(d)(7)filing FCCID: 2BGFS-HB035D ShenzhenSenterEcommerceCo.Ltd(“theapplicant”)certifiesthat,asofthedateofthefilingof theapplication,HOPEKCORPORATIONINC(“theagent”)isourdesignatedU.S.agentforserviceof processfortheabovereferenceFCCID.Theapplicantacceptstomaintainanagentforserviceof processintheUnitedStatesfornolessthanoneyearaftereitherthegranteehaspermanently terminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolvingtheequipment, whicheverislater.TheapplicantfurtheracknowledgesitisourresponsibilitytoinformtheFCC whenevertheagentinformationchanges. HOPEKCORPORATIONINC ("theagent)understanditistheagent'sobligationtoacceptserviceof processintheUnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddress. DesignatedU.S.Agent CompanyName:HOPEKCORPORATIONINC FRN:0034562900 GC:N/A Address: 16755CoyoteBushDrUnit84,SanDiego,CA92127UnitedStates Signature: ContactPerson:PeterDavis Tel:561-235-6113Email:[email protected] Applicant CompanyName:ShenzhenSenterEcommerceCo.Ltd Address:3B11B,Building5,ZoneA,BaoanInternet IndustryBase,OysterIndustryCommunity,XixiangStreet, BaoanDistrict,Shenzhen FRN:0035433309 Signature: ContactPerson:YangFangYe Tel:18775698353Email:[email protected]

(ShenzhenSenterEcommerceCo.Ltd) January4,2026 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(i)requestfor FCCID:2BGFS-HB035D ShenzhenSenterEcommerceCo.Ltd(“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903of theFCCrules. Wealsocertifythat,asofthedateofthefilingoftheapplication,theequipment doesnotutilizecyber-securityoranti-virussoftwarefromKasperskyLab,Inc,or anyofitssuccessorsandassignees,whichisalsoonthe“coveredlist”. Sincerely, (Applicantsignature) (Applicantprintedname)YangFangYe (ShenzhenSenterEcommerceCo.Ltd) January4,2026 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(ii)requestfor FCCID:2BGFS-HB035D ShenzhenSenterEcommerceCo.Ltd(“theapplicant”)certifiesthat,asofthe dateofthefilingoftheapplication,theapplicantisnotidentifiedontheCovered Listasanentityproducing“covered”equipment. Sincerely, (Applicantsignature) (Applicantprintedname)YangFangYe

FCCID:2BGFS-HB035D ShenzhenSenterEcommerceCo.Ltd ModelConfirmationLetter We,ShenzhenSenterEcommerceCo.Ltd,certifytheproduct:Smart BayLight,ModelNo.:HB035D-210W,KING-HR150E.Theproduct onlythemodelname,Appearanceandcolorisdifferent,andthe otherpartssuchasthecircuitprinciple,pcbandelectricalstructure arethesame.Testsamplemodel:HB035D-210W Signiture:YangFangYe CompanyName:ShenzhenSenterEcommerceCo.Ltd Date:2025/12/26

ShenzhenSenterEcommerceCo.Ltd (January4,2026) EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:CONFIDENTIALITYREQUESTFORSmartBayLight/HB035D-210W FCCID:2BGFS-HB035D ToWhomItMayConcern: Thisletterservesasanofficialrequestforconfidentialityundersections0.457and0.459 ofCFR47.Wehaverequestedthatthe ExhibitsLong-Term Confidentiality Short-Term Confidentiality NOTE2 IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNoNo BlockDiagram ☒ No Schematics ☒ No TestReportNoNo TestSetupPhotosNoNo User’sManual ☐ NOTE 1 No InternalPhotos ☐ NOTE 1 No PartsList/TuneUp ☐ No RFExposureInfoNoNo OperationalDescription ☒ No CoverLetter(s)NoNo SDRSoftware/SecurityInfoNoNo requiredtobesubmittedwiththisapplicationbepermanentlywithheldfrompublic review. Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, Signature: Name:YangFangYe Title:Manager

ShenzhenSenterEcommerceCo.Ltd (December26,2025) EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorize(ShenzhenDACETestingTechnologyCo.,Ltd.)to actonourbehalfinallmattersrelatingtoapplicationforequipmentauthorization,includingthe signingofalldocumentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseAct of1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, Signature: Name:YangFangYe Title:Manager

FCCID:2BGFS-HB035D External FCCID:2BGFS-HB035D FCCID:2BGFS-HB035D FCCID:2BGFS-HB035D

LabelLocation: Label:50*30mm SmartBayLight Model:HB035D-210WFCCID:2BGFS-HB035D MadeinChina Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothefollowingtwo conditions:(1)Thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemust acceptanyinterferencereceived,includinginterferencethatmaycauseundesiredoperation.

FCCID:2BGFS-HB035D Internal FCCID:2BGFS-HB035D FCCID:2BGFS-HB035D ANT

PredictionofMPEatagivendistance ProductName: SmartBayLight ModelNo: HB035D-210W FCCID:2BGFS-HB035D 1.RFExposureEvaluation FCCKDB447498D01GeneralRFExposureGuidancev06:MobileandPortableDevice, RFExposure,EquipmentAuthorizationProcedures. FCCCFR47part11.1310:Radiofrequencyradiationexposurelimits. FCCCFR47part22.1091:Radiofrequencyradiationexposureevaluation:mobiledevices. 2.Limits Thecriterialistedinthefollowingtableshallbeusedtoevaluatetheenvironmentimpactofhumanexposure toradiofrequency(RF)radiationasspecifiedin1.1307(b) 2.TestProcedure Equationfrompage18ofOETBulletin65,Edition97-01 Where: S=powerdensity P=powerinputtotheantenna G=numericgainoftheantennainthedirectionofinterestrelativetoanisotropicradiator R=distancetothecentreofradiationoftheantenna EUTRFEXPOSURE Frequency (MHz) Maximum Output power (dBm) Maximum Output power (mW) Antenna Gain (dBi) Antenna Gain (numeric) Distance (cm) Result (mW/cm2) Limitsfor General Population/ Uncontrolled Exposure (mW/cm2) WIFImode 241216.5845.4991.391.38200.0124661 Note:Justtheworstcasemodewasshowninreport.

ANTENNAREPORT Manufacture：TUYA Product Name：T1-U-HLAntenna Antenna Type：PCB Test Date：2021.03.18 Tested by：Haigang Ruan Approved by：Licco Content 1.GeneralDescription..................................................................................1 2.TestConfigurations..................................................................................2 2.1TestEnvironment............................................................................2 2.2TestEquipment................................................................................2 2.3TestPrinciple...................................................................................2 3.TestResults...............................................................................................3 3.1S11...................................................................................................3 3.2GainandEfficiency.........................................................................4 3.3RadiationPattern.............................................................................5 4.AntennaDimensions................................................................................6 5.EUTPhoto................................................................................................6 6.TestSetupPhoto.......................................................................................7 1 1.GeneralDescription ManufacturerHangzhouTuyaInformationTechnologyCo.,Ltd Room701,Building3,MoreCenter,No.87GuDunRoad, Hangzhou,Zhejiang,Chin Address a Room106,Building3,LetongSciencePark,No.500, QiuyiRoad,BinjiangDistrict,Hangzho TestLocation u ProductNameT1-U-HLAntenna Productmodel T1-U-HL PCBAntenn AntennaType a Gain;Efficiency;RadiationPatter TestItems n 2400-2500MH TestFrequency z ANSI/IEEEStd149-197 TestStandard 9 2 2.TestConfigurations 2.1TestEnvironment Temperature(°C)25 Humidity(%RH)60 AtmosphericPressure(kPa)100.5 2.2TestEquipment TestSystemTEM24Multi-probeMicrowaveChamber TestInstrumentAgilentE5071B 2.3TestPrinciple 3 3.TestResults 3.1S11 Frequency(MHz)240024502500 ReturnLoss(dB)-8.73-11.76-11.21 VSWR2.161.711.77 4 3.2GainandEfficiency Frequency(MHz)PeakGain(dBi)Efficiency(%) 2400-0.9824.43 2410-0.6725.64 2420-0.3726.24 2430-0.1227.04 24400.0427.48 245025.20.455 246023.80.558 247022.60.695 248021.70.938 249020.01.394 2500-2.0716.18 5 3.3RadiationPattern Phi02D Phi902D Theta902D 6 5.EUT Photo 7 6.TestSetupPhoto

V1.0ReportNo.:DACE251120002RL001 102,BuildingH1,&1/F.,BuildingH,HongfaScience&TechnologyPark,TangtouCommunity,ShiyanSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Web:http://www.dace-lab.comTel:+86-755-23010613E-mail:[email protected] 1 of 94 RFTESTREPORT For ShenzhenSenterEcommerceCo.Ltd ProductName:SmartBayLight TestModel(s):HB035D-210W ReportReferenceNo.:DACE251120002RL001 FCCID:2BGFS-HB035D Applicant’sName:ShenzhenSenterEcommerceCo.Ltd Address: 3B11B,Building5,ZoneA,BaoanInternetIndustryBase,OysterIndustry Community,XixiangStreet,BaoanDistrict,Shenzhen TestingLaboratory:ShenzhenDACETestingTechnologyCo.,Ltd. Address: 102,BuildingH1,&1/F.,BuildingH,HongfaScience&TechnologyPark, TangtouCommunity,ShiyanSubdistrict,Bao'anDistrict,Shenzhen, Guangdong,China TestSpecificationStandard:47CFRPart15.247 DateofReceipt:November20,2025 DateofTest:November20,2025toDecember11,2025 DataofIssue:December11,2025 Result:Pass Note:Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofShenzhenDACE TestingTechnologyCo.,Ltd.ThisdocumentmaybealteredorrevisedbyShenzhenDACETestingTechnology Co.,Ltd.personnelonly,andshallbenotedintherevisionsectionofthedocument.Thetestresultsinthe reportonlyapplytothetestedsample V1.0ReportNo.:DACE251120002RL001 102,BuildingH1,&1/F.,BuildingH,HongfaScience&TechnologyPark,TangtouCommunity,ShiyanSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Web:http://www.dace-lab.comTel:+86-755-23010613E-mail:[email protected] 2 of 94 Applyforcompanyinformation Applicant’sName:ShenzhenSenterEcommerceCo.Ltd Address:3B11B,Building5,ZoneA,BaoanInternetIndustryBase,Oyster IndustryCommunity,XixiangStreet,BaoanDistrict,Shenzhen ProductName:SmartBayLight TestModel(s):HB035D-210W SeriesModel(s):KING-HR150E TestSpecificationStandard(s):47CFRPart15.247 NOTE1: Themanufacturershouldensurethatallproductsinseriesproductionareinconformitywiththeproductsampledetailedin thisreport.Iftheproductinthisreportisusedinanyconfigurationotherthanthatdetailedinthereport,themanufacturer mustensurethenewsystemcomplieswithallrelevantstandards. Compiledby: Supervisedby: Approvedby: LucyMo/TestEngineerBenTang/ProjectEngineerTomChen/Manager December11,2025December11,2025December11,2025 V1.0ReportNo.:DACE251120002RL001 102,BuildingH1,&1/F.,BuildingH,HongfaScience&TechnologyPark,TangtouCommunity,ShiyanSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Web:http://www.dace-lab.comTel:+86-755-23010613E-mail:[email protected] 3 of 94 RevisionHistoryOfReport VersionDescriptionREPORTNo.IssueDate V1.0OriginalDACE251120002RL001December11,2025 V1.0ReportNo.:DACE251120002RL001 102,BuildingH1,&1/F.,BuildingH,HongfaScience&TechnologyPark,TangtouCommunity,ShiyanSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Web:http://www.dace-lab.comTel:+86-755-23010613E-mail:[email protected] 4 of 94 CONTENTS 1TESTSUMMARY...................................................................................................................................................6 1.1TESTSTANDARDS........................................................................................................................................6 1.2SUMMARYOFTESTRESULT.........................................................................................................................6 2GENERALINFORMATION....................................................................................................................................7 2.1CLIENTINFORMATION..................................................................................................................................7 2.2DESCRIPTIONOFDEVICE(EUT)..................................................................................................................7 2.3DESCRIPTIONOFTESTMODES....................................................................................................................8 2.4DESCRIPTIONOFSUPPORTUNITS................................................................................................................8 2.5EQUIPMENTSUSEDDURINGTHETEST........................................................................................................9 2.6STATEMENTOFTHEMEASUREMENTUNCERTAINTY....................................................................................11 2.7IDENTIFICATIONOFTESTINGLABORATORY.................................................................................................11 2.8ANNOUNCEMENT........................................................................................................................................11 3EVALUATIONRESULTS(EVALUATION)...........................................................................................................12 3.1ANTENNAREQUIREMENT............................................................................................................................12 3.1.1Conclusion:.................................................................................................................................12 4RADIOSPECTRUMMATTERTESTRESULTS(RF).........................................................................................13 4.1CONDUCTEDEMISSIONATACPOWERLINE................................................................................................13 4.1.1E.U.T.Operation:........................................................................................................................13 4.1.2TestSetupDiagram:...................................................................................................................13 4.1.3TestData:...................................................................................................................................14 4.26DBBANDWIDTH.......................................................................................................................................16 4.2.1E.U.T.Operation:.........................................................................................................…

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FCCID:2BGFS-HB035D ConductedEmissionatACpowerline Emissionsinfrequencybands(below1GHz) FCCID:2BGFS-HB035D Emissionsinfrequencybands(above1GHz)