2BU2S-WLT8016Window Cleaning Robot

JingjieXunhang(Suzhou)TechnologyCo.,Ltd. (10/FBuildingB,No.7QianZhuRoad,TaihuStreet,WuzhongDistrict,Suzhou,JiangsuProvince, China) U.S.AgentLetterofAttestation To:FederalCommunicationsCommission 7435OaklandMillsRoad,Columbia,MD21046,USA Date:Apr.13,26 Ref:AttestationStatement–Part2.911(d)(7)filing FCCID:[2BU2S-WLT8016] [JingjieXunhang(Suzhou)TechnologyCo.,Ltd.](“theapplicant”)certifiesthat,asofthedateofthe filingoftheapplication,[GOLDENVICTORYINTERNATIONALTRADINGCOLTD](“theagent”)is ourdesignatedU.S.agentforserviceofprocessfortheabovereferenceFCCID.Theapplicant acceptstomaintainanagentforserviceofprocessintheUnitedStatesfornolessthanoneyear aftereitherthegranteehaspermanentlyterminatedallmarketingandimportationoftheapplicable equipmentwithintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicial proceedinginvolvingtheequipment,whicheverislater.Theapplicantfurtheracknowledgesitisour responsibilitytoinformtheFCCwhenevertheagentinformationchanges. [GOLDENVICTORYINTERNATIONALTRADINGCOLTD]("theagent)understanditistheagent's obligationtoacceptserviceofprocessintheUnitedStatesformattersrelatedtotheapplicable equipment,andatthephysicalU.S.addressandemailaddress. DesignatedU.S.Agent CompanyName:GOLDENVICTORYINTERNATIONALTRADINGCOLTD FRN:0036377570 Address:11016THSTREETSUITE1400DENVER, CO80202UnitedStates Signature: ContactPerson:LeonHowar Tel:(337)255-0461Email: [email protected] Applicant CompanyName:JingjieXunhang(Suzhou)TechnologyCo.,Ltd. FRN:0038106878 Address:10/FBuildingB,No.7QianZhuRoad,Taihu Street,WuzhongDistrict,Suzhou,JiangsuProvince,China Signature: ContactPerson:ZhonghuaZhang Tel:15262587955 Email:[email protected]

JingjieXunhang(Suzhou)TechnologyCo.,Ltd. (10/FBuildingB,No.7QianZhuRoad,TaihuStreet,WuzhongDistrict,Suzhou,JiangsuProvince, China) AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:Apr.1,2026 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRD:RequiredbySection2.911(d)(5)(i)&(ii) FCCID:2BU2S-WLT8016 JingjieXunhang(Suzhou)TechnologyCo.,Ltd.(“theapplicant”)certifiesthat,asofthedateofthefiling oftheapplication,theapplicantisnotidentifiedontheCoveredList,establishedpursuantto§1.50002 ofreferencechapter,asanentityproducing“covered”communicationequipment.Theequipmentfor whichauthorizationissoughtisnot“covered”telecommunicationsequipmentandvideosurveillance equipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthatprohibitedfrom receivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, ApplicantSignature PrintedName:ZhonghuaZhang Title:CertificationEngineer Address:10/FBuildingB,No.7QianZhuRoad,TaihuStreet,WuzhongDistrict,Suzhou,JiangsuProvince, China Email:[email protected]

JingjieXunhang(Suzhou)TechnologyCo.,Ltd. (10/FBuildingB,No.7QianZhuRoad,TaihuStreet,WuzhongDistrict,Suzhou,JiangsuProvince, China) 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Apr.1,2026 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:2BU2S-WLT8016 ProductName:WindowCleaningRobot Thisletterservesasanattestationthattheequipmentidentifiedabove☐is/☒isnot(selectone)"covered" softwareasdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,as outlinedinFCC22-84andKDB986446. Specifically,theundersignedcertifiesthattheequipmentforwhichauthorizationissought: 1.Doesnotcontaincybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab, Inc.oranyofitssuccessors,assignees,parents,subsidiaries,affiliates,oranyentitythathasrebranded orrelabeledsoftwareproducedbytheaforementionedentities. 2.Doesnothavethecapabilitytostore,run,ordeliveranysoftwareidentifiedontheFCCCoveredList, includingbutnotlimitedtocybersecurityandanti-virussoftware. Tosupportthisattestation,theappendixevaluationdocumentationhasbeenpreparedandisincludedinthe certificationfiling. Thisattestationisbasedonathoroughevaluationofthedevice'sdesign,functionality,andsoftware environment.Theundersignedaffirmsthattheinformationprovidedisaccurateandcompletetothebestof theirknowledge. Sincerelyyours, ApplicantSignature PrintedName:ZhonghuaZhang Title:CertificationEngineer Address:10/FBuildingB,No.7QianZhuRoad,TaihuStreet,WuzhongDistrict,Suzhou,JiangsuProvince,China Tel.:15262587955 Email:[email protected] JingjieXunhang(Suzhou)TechnologyCo.,Ltd. (10/FBuildingB,No.7QianZhuRoad,TaihuStreet,WuzhongDistrict,Suzhou,JiangsuProvince, China) 2|Page EvaluationregardingtotheCoveredListSoftware: Compliance Methodology EvaluationProcessResults Deviceis Inherent compliance ☒ TheChipset(s)usedislimitedtorun theCybersecurityoranti-virus software. Compliance ☒ TheMemoryusedislimitedtorunthe Cybersecurityoranti-virussoftware. Compliance ☒ Thereisstoragecapacitylimitationfor storeorinstalltheCybersecurityor anti-virussoftware. Compliance ☒ Operatingsystemusedislimitedto run,installordelivertheCybersecurity oranti-virussoftware. Compliance Deviceisnot Inherent compliance ☐ EvaluationBasedonSoftware BillofMaterials(SBoM) Seeattached“SBoM“ Note:TheSBoMcontentislimited tothescopeofcoveredlist software(e.g.antivirusand cybersecuritysoftware). ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck SBOM(SoftwareBillofMaterials)[ForDeviceisnotInherentcompliance] SectionComponentNameVersionSupplier 1 2 3

JingjieXunhang(Suzhou)TechnologyCo.,Ltd. (10/FBuildingB,No.7QianZhuRoad,TaihuStreet,WuzhongDistrict,Suzhou,Jiangsu Province,China) Date:April1,2026 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2BU2S-WLT8016 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestpermanent confidentialtreatmentoftheexhibitsaccompanyingthiscertificationapplicationasoutlinedbelow: BlockDiagram  Schematics OperationalDescription  BOM Theaboveexhibitscontaintradesecretsand/orproprietaryinformationthatarenotpubliclyavailableand materialsthattheApplicanthasspentconsiderableeffortsindeveloping.Publicdisclosureofthesemay beharmfultotheApplicantandgiveanunfairadvantagetocompetitorsonthemarket. PursuanttoDA04-1705,theapplicantalsorequeststemporaryconfidentialtreatmentoftheexhibits outlinedbelowforaperiodof(upto180)daysfromthedateofequipmentauthorizationandpriorto marketingintheUnitedStatestopreventtheprematurereleaseofanysensitiveinformation.Applicantis awareoftheirresponsibilitytonotifyDERYCOMintheeventinformationregardingtheproductorthe productismadeavailabletothepublicbeforetherequestedperiodhasexpired. UserManual InternalPhotos TestSetupPhotos Sincerely, (Signature) Title:CertificationEngineer Address:10/FBuildingB,No.7QianZhuRoad,TaihuStreet,WuzhongDistrict,Suzhou,Jiangsu Province,China Tel.:15262587955 Email:[email protected]

JingjieXunhang(Suzhou)TechnologyCo.,Ltd. (10/FBuildingB,No.7QianZhuRoad,TaihuStreet,WuzhongDistrict,Suzhou,Jiangsu Province,China) Date:April1,2026 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2BU2S-WLT8016,theundersigned,herebyauthorize (GuangdongZhonghanTestingTechnologyCo.,Ltd.)toactonourbehalfinallmattersrelatingtothis applicationforequipmentcertification. Anyactcarriedoutby(GuangdongZhonghanTestingTechnologyCo.,Ltd.)shallhavethesameeffect asourownandIacknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsof certification,asspecifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswith(Jingjie Xunhang(Suzhou)TechnologyCo.,Ltd.). WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) (FullnameofcontactpersonlistedonFCC’swebsite) Title:CertificationEngineer Tel:15262587955 Email:[email protected]

FCCID:2BU2S-WLT8016 EUTPHOTOSExternalPhotos FCCID:2BU2S-WLT8016 FCCID:2BU2S-WLT8016 FCCID:2BU2S-WLT8016 ※※※※※ENDOFREPORT※※※※※

Size:9mm*30mm FCCID:2BU2S-WLT8016 IC:34786-WLT8016 HVIN:GNDJ2580-N1

FCCID:2BU2S-WLT8016 RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093 ， Unless specificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1-gheador bodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions,by measurementornumericalsimulation,isnotrequiredwhenthecorrespondingSARTest ExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-gSARtest exclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f (GHz) ]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Here, ForBLE Mode Max Power (dBm) Tune-up power (dBm) Tune-up power (mW) Frequency(MHz) Min. Distance (mm) Calc. thresholds limit GFSK-0.87-0.8±10.0010248050.00033.0 SoaSARtestisnotrequired

ProjectNo.:ZHT-251029126W01 Page 1 of 58 FCCTESTREPORT FCCID:2BU2S-WLT8016 ApplicantName...............:JingjieXunhang(Suzhou)TechnologyCo.,Ltd. Address............................:10/FBuildingB,No.7QianZhuRoad,TaihuStreet,WuzhongDistrict, Suzhou,JiangsuProvince,China ManufacturerName.........:JingjieXunhang(Suzhou)TechnologyCo.,Ltd. Address............................:10/FBuildingB,No.7QianZhuRoad,TaihuStreet,WuzhongDistrict, Suzhou,JiangsuProvince,China Product............................:WindowCleaningRobot Model(s)...........................:GNDJ2580 AdditionalModel(s)..........:/ Trademark.......................:/ ModelDifference..............:/ Preparedby.....................:GuangdongZhonghanTestingTechnologyCo.,Ltd. Address............................:Room104/201,Building1,YibaolaiIndustrialPark,Qiaotou,Fuhai Subdistrict,Bao'anDistrict,Shenzhen,Guangdong,China DateofReceipt................:Oct.29,2025 DateofTest(s).................:Oct.29,2025toApr.10,2026 DateofIssue....................:Apr.10,2026 TestRequested................:Selecttest(s)asrequestedbytheclient. TestStandard(s)..............:FCCCFRTitle47Part15SubpartCSection15.247 Testprocedure................:KDB558074D0115.247MeasGuidancev05r02 ANSIC63.10-2020+Cor1-2023 Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove. Preparedby:Reviewedby:Approvedby: KimiLu/EngineerBaretWu/DirectorLeviLee/Manager Note:Theresultsshowninthistestreportreferonlytothesample(s)testedunlessotherwisestated.Thistest reportshallnotbereproducedexceptinfull,withoutpriorwrittenapprovalofZHT.Thisdocumentmaybe alteredorrevisedbyZHT,personnelonly,andshallbenotedintherevisionofthedocument. ProjectNo.:ZHT-251029126W01 Page 2 of 58 TableofContentsPage 1.SUMMARYOFTESTRESULTS.............................................................................................................4 2.GENERALINFORMATION.....................................................................................................................5 2.1GENERALDESCRIPTIONOFEUT...............................................................................................5 2.2DESCRIPTIONOFTESTMODES..................................................................................................6 2.3TESTSETUPCONFIGURATION....................................................................................................7 2.4DESCRIPTIONOFSUPPORTUNITS(CONDUCTEDMODE)......................................................7 3.TESTFACILITYANDTESTINSTRUMENTUSED................................................................................8 3.1TESTFACILITY...............................................................................................................................8 3.2EQUIPMENTSLISTFORALLTESTITEMS.................................................................................8 3.3TESTINGSOFTWARE....................................................................................................................9 3.4MEASUREMENTUNCERTAINTY................................................................................................10 4.EMCEMISSIONTEST..........................................................................................................................11 4.1CONDUCTEDEMISSIONMEASUREMENT................................................................................11 4.1.1POWERLINECONDUCTEDEMISSIONLimits.................................................................11 4.1.2TESTPROCEDURE.............................................................................................................11 4.1.3DEVIATIONFROMTESTSTANDARD................................................................................11 4.1.4TESTSETUP........................................................................................................................12 4.1.5EUTOPERATINGCONDITIONS.........................................................................................12 4.1.6TESTRESULTS...................................................................................................................13 4.2RADIATEDEMISSIONMEASUREMENT.....................................................................................15 4.2.1RADIATEDEMISSIONLIMITS............................................................................................15 4.2.2TESTPROCEDURE.............................................................................................................16 4.2.3DEVIATIONFROMTESTSTANDARD................................................................................16 4.2.4TESTSETUP........................................................................................................................16 4.2.5EUTOPERATINGCONDITIONS.........................................................................................17 5.RADIATEDBANDEMISSIONMEASUREMENT.................................................................................23 5.1TESTREQUIREMENT:...........................................................................................................23 5.2TESTPROCEDURE................................................................................................................23 5.3DEVIATIONFROMTESTSTANDARD...................................................................................23 5.4TESTSETUP...........................................................................................................................24 5.5EUTOPERATINGCONDITIONS............................................................................................24 5.6TESTRESULT.........................................................................................................................25 6.POWERSPECTRALDENSITYTEST..................................................................................................26 6.1APPLIEDPROCEDURES/LIMIT...........................................................................................26 ProjectNo.:ZHT-25102…

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latest version V1.5 Company: Weilintong (Shanghai) Communication Technology Co., Ltd Address: Room 602, Building 3, Lane 88, Shengrong Road, Pudong New Area, Haishi COPYRIGHT © 2011 - 2030 Antenna Specification Document Wi- linktech www.wi-linktech.com 24/08/2023 1 1.Overview This antenna specification document describes the RF performance of the WLT8016 module onboard antenna, ensuring that when connected to a 50 ohm source The VSWR on the 2.4GHz ISM frequency band is less than 2, and the gain maps of the antenna in different directions, as well as the antenna efficiency and gain values in different frequency bands. Figure 1-1: WLT8016 module WLT8016 module antenna size WLT8016 antenna information Wi- linktech 3.Return loss、 VSW R VSWR Return loss V SWR 2.test equipment Wi- linktech Etheta[Unit:dBi 4 ] www.wi-linktech.com 2 24/08/2023 Wi- linktech Ephi[Unit:dBi] www.wi-linktech.co 增益/gaingain：-1.90dBi 增益/gain：-0.72dBi 增益/gain：-0.06dBi m 4 24/08/2023 Wi- linktech 5.Antenna gain table Frequency / MHz Efficiency / % Gain/ dBi 240022.29-1.90 241024.61-1.52 2420 26.72-1.15 243028.62-0.77 244027.97-0.72 245030.65 -0.17 246030.04-0.16 247028.77-0.17 248028.70 -0.06 249026.38-0.34 250025.77-0.40 www.wi-linktech.com4 24/08/2023