YI6RL-33TXWireless Remote Control Doorbell

ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigitaldevice,pursuanttoPart15oftheFCC Rules.Theselimitsaredesignedtoprovidereasonableprotectionagainstharmfulinterferenceinaresidentialinstallation. Thisequipmentgeneratesusesandcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordancewiththe instructions,maycauseharmfulinterferencetoradiocommunications.However,thereisnoguaranteethatinterferencewill notoccurinaparticularinstallation.Ifthisequipmentdoescauseharmfulinterferencetoradioortelevisionreception,which canbedeterminedbyturningtheequipmentoffandon,theuserisencouragedtotrytocorrecttheinterferencebyoneor moreofthefollowingmeasures: --Reorientorrelocatethereceivingantenna. --Increasetheseparationbetweentheequipmentandreceiver. --Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiverisconnected. --Consultthedealeroranexperiencedradio/TVtechnicianforhelp. Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothefollowingtwoconditions: (1)Thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustacceptanyinterferencereceived,including interferencethatmaycauseundesiredoperation. Changesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliancecouldvoidtheuser'sauthorityto operatetheequipment

C5266091_X23_Ed.1 US AGENT LETTER OF ATTESTATION US Agent: Company Name: Baihetian Innovative Solutions Contact Name: Kenneth Young Address:6837 Chase Rd City/Province/Zip: Dearborn, M 48126 Telephone No: 313-395-3113 Email:Email: [email protected] FRN: 0033401605 TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 This letter is to confirm that we have accepted the responsibility to act as US agent representative on behalf of the (GUANGDONG ROULE ELECTRONICS CO., LTD ） noted below for all future FCC certification/registrations obtained during the period of this agreement, which ends at the specified date below. As per US agent, we are aware of the requirements involved as outlined in FCC Equipment Authorization Program in their Report and Order FCC 22-84 and the clause § 2.911 Application requirements. Applicant Company name:GUANGDONG ROULE ELECTRONICS CO., LTD FRN: 0023650096 FCC ID: YI6RL-33TX Contact Name:Huahao.Zhang Address:No. 12, Pingdong 3rd Road, Nanping Industry，Community, Zhuhai Guangdong, China Telephone No:086-0756-8818703 Fax No: 086-0756-8818703 Email: [email protected] The Applicant acknowledge the acceptance of its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Date: 2023.5.9 Applicant’s Name: Huahao.ZhangUS Agent’s Name: Kenneth Young Title: General ManagerTitle: Manager SignatureSignature 1/1

GUANGDONGROULEELECTRONICSCO., LTD CoveredEquipmentCertificationAttestationLetter DATE 2023.5.10 FederalCommunicationsCommission Authorizationand EvaluationDivision 7435 OaklandMills Road Columbia,MD 21046 USA ATTN.:ReviewingEngineer FCC ID:YI6RL-33TX GUANGDONGROULEELECTRONICSCO., LTD(“the applicant”) certifiesthat the equipmentfor which authorizationis soughtis not “covered” equipmentprohibitedfrom receivingan equipmentauthorizationpursuantto section2.903 of the FCC rules. Note: If the equipmentfor which the applicantseeks authorizationis producedby any of the entitiesidentifiedon the currentCoveredList , the applicantshould includean explanationon why the equipmentis not “covered” equipment. GUANGDONG ROULE ELECTRONICS CO., LTD (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Signed: Title:GeneralManager CompanyName:GUANGDONGROULEELECTRONICSCO., LTD Date: 2023.5.10

GUANGDONGROULEELECTRONICSCO.,LTD Date：2023.5.9 ProductModelNumber: FCCID ： YI6RL-33TX Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Approvalapplicationsandprocedures WedeclarethatORGANIZATION.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyORGANIZATION.onourbehalf shallhavethesameeffectasactsofourown. By: Title:GeneralManager Telephone:086-0756-8818703 Onbehalfof:GUANGDONGROULEELECTRONICSCO.,LTD

GUANGDONGROULEELECTRONICSCO.,LTD OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:May17,2023 Subject;RequestforConfidentiality FCCID: YI6RL-33TX ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthese documentsmightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantage inthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure SoftwareSecurityRequirementsforUNIIdevices Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:Huahao.Zhang Title:GeneralManager

GUANGDONGROULEELECTRONICSCO.,LTD We,GUANGDONGROULEELECTRONICSCO.,LTD(Companyname) certifytheproduct:WirelessRemoteControl AnditemRL-3995RL-2R3995,RL-3995B,TK-WD995,TK-WD996,VX-WD995,VX-WD996, TK-SD001 AllabovemodelsareidenticalinthesamePCBlayout,interiorstructureandelectrical circuits.Thedifferencesaremodelnameforcommercialpurpose. Date:2023.5.9 JobTitle(representative): GeneralManager Signature: Name: Huahao.Zhang

Size Manufacturer：Zhuhai yikai hardware products co., ltd Model：1EZX150034-1H Operation Frequency:433.92MHz±250KHz Antenna Type:spring antenna :

ModelNo.: RL-3995

FCCID:YI6RL-33TX

ModelNo.: RL-3995

RFExposureevaluation FCCID:YI6RL-33TX Accordingto447498D04InterimGeneralRFExposureGuidancev01 eirp=ptxgt=(EXd) 2 /30 where: pt=transmitteroutputpowerinwatts, gt=numericgainofthetransmittingantenna(unitless), E=electricfieldstrengthinV/m,---10 ((dBuV/m)/20) /10 6 d=measurementdistanceinmeters(m)---3m Sopt=(EXd) 2 /30xgt Antgain=0dBi（1）[-0.05dBd(0.99)] Fieldstrength=85.69dBμV/m@[email protected] SoPt={[10 (85.69/20) /10 6 x3] 2 /（30x1）}x1000mW=0.111mW<22mW SoERP=0.111x0.99=0.110<22mW ThenSARevaluationisnotrequired

Page 1 of 31 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd. Add:BuildingC,No.107,ShihuanRoad,ShiyanSub-District,BaoanDistrict,Shenzhen,GuangdongProvince,China Tel:+86-755-23059481Email:[email protected] TESTREPORT ProductName: WirelessRemoteControlDoorbell BrandMark: /TECKNET/TeckNet/Voxon ModelNo.: RL-3995 Extensionmodel: RL-2R3995,RL-3995B,TK-WD995, TK-WD996,VX-WD995,VX-WD996, TK-SD001 FCCID: YI6RL-33TX ReportNumber: BLA-EMC-202303-A12802 DateofSampleReceipt: 2023/3/30 DateofTest: 2023/3/31to2023/4/23 DateofIssue: 2023/4/23 TestStandard: 47CFRPart15,SubpartC15.231 TestResult:Pass Preparedfor: GUANGDONGROULEELECTRONICSCO.,LTD. No.12,Pingdong3rdRoad,NanpingIndustryCommunity,Zhuhai City,GuangDong,China Preparedby: BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd. BuildingC,No.107,ShihuanRoad,ShiyanSub-District,BaoanDistrict, Shenzhen,GuangdongProvince,China TEL:+86-755-23059481 Compiledby:Reviewby: Approvedby:Date:2023/4/23 ReportNo.:BLA-EMC-202303-A12802 Page 2 of 31 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] REPORTREVISERECORD VersionNo.DateDescription 002023/4/23Original ReportNo.:BLA-EMC-202303-A12802 Page 3 of 31 BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd.Tel:+86-755-23059481Email:[email protected] TABLEOFCONTENTS 1TESTSUMMARY..............................................................................................................................................5 2GENERALINFORMATION...............................................................................................................................6 3GENERALDESCRIPTIONOFE.U.T................................................................................................................6 4TESTENVIRONMENT......................................................................................................................................7 5TESTMODE......................................................................................................................................................7 6MEASUREMENTUNCERTAINTY....................................................................................................................7 7DESCRIPTIONOFSUPPORTUNIT................................................................................................................8 8LABORATORYLOCATION..............................................................................................................................8 9TESTINSTRUMENTSLIST..............................................................................................................................9 10RADIATEDEMISSIONS................................................................................................................................11 10.1LIMITS......................................................................................................................................................................11 10.2BLOCKDIAGRAMOFTESTSETUP............................................................................................................................12 10.3PROCEDURE.............................................................................................................................................................12 10.1TESTDATA..................................................................................................................................................................13 11FIELDSTRENGTHOFTHEFUNDAMENTALSIGNAL(15.231(B))...........................................................18 11.1LIMITS......................................................................................................................................................................18 11.2BLOCKDIAGRAMOFTESTSETUP............................................................................................................................19 11.3PROCEDURE.............................................................................................................................................................19 11.4TESTDATA..................................................................................................................................................................21 12DWELLTIME(15.231(A)).............................................................................................................................25 12.1LIMITS......................................................................................................................................................................25 12.2BLOCKDIAGRAMOFTESTSETUP............................................................................................................................25 12.3TESTDATA..................................................................................................................................................................26 1320DBBANDWIDTH.......................................................................................................................................27 13.1LIMITS......................................................................................................................................................................27 13.2BLOCKDIAGRAMOFTESTSETUP............................................................................................................................27 13.3TESTDATA..................................................................................................................................................................28 14ANTENNAREQUIREMENT..........................................................................................................................29 14.1CONCLUSION...............................................................................................................................................................29 ReportNo.:BLA-EMC-202303-A12802 Page 4 of 31 Blu…

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ModelNo.: RL-3995 RadiatedEmissions