2A9F7-RHEARhea

ShenzhenEnvisionTechnologyInnovationCo.,Ltd. CoveredEquipmentCertificationAttestationLetter 04/17/2026 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA ATTN.:ReviewingEngineer FCCID:2A9F7-RHEA ShenzhenEnvisionTechnologyInnovationCo.,Ltd.(“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipmentprohibitedfrom receivinganequipmentauthorizationpursuanttosection2.903oftheFCCrules. Note:Iftheequipmentforwhichtheapplicantseeksauthorizationisproducedby anyoftheentitiesidentifiedonthecurrentCoveredList,theapplicantshould includeanexplanationonwhytheequipmentisnot“covered”equipment. ShenzhenEnvisionTechnologyInnovationCo.,Ltd.(“theapplicant”)certifiesthat,asofthe dateofthefilingoftheapplication,theapplicantisnotidentifiedontheCoveredList(as aspecificallynamedentityoranyofitssubsidiariesoraffiliates)asanentityproducing “covered”equipment. ShenzhenEnvisionTechnologyInnovationCo.,Ltd. (“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtdoesnotincludecybersecurityoranti-virus softwareproducedorprovidedbyKasperskyLab,Inc.oranyofitssuccessorsand assignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyofits successorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886 andKDB986446D01CoveredEquipmentGuidancesectionB(2a). Signed: Printedname:JasonTang Title:Manager CompanyName:ShenzhenEnvisionTechnologyInnovationCo.,Ltd. Date:04/17/2026

Shenzhen Envision Technology Innovation Co., Ltd. * the applicant must designate a contact located in the United States for purposes of acting as the appl icant’s agent for service of process, regardless of whether the applicant is a domestic or forei gn ent ity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter 04/17/2026 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2A9F7-RHEA FRN of applicant: 0033105990 Per section 2.911(d)(7) of the FCC rules, [Shenzhen Envision Technology Innovation Co., Ltd.] (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: FCC US Agent, LLC FCC Registration Number (FRN): 0033402884 Physical U.S. Company Address: 3722 Illinois Avenue, Saint Charles, IL 60174, USA Contact Person: Tim Payne Agent Email Address: [email protected] The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Agent Signed (if different from Applicant): Signed: Printed name: Jason Tang Title: Manager Company Name: Shenzhen Envision Technology Innovation Co., Ltd. Date: 04/17/2026 Signed: Printed name: Tim Payne Title: Manager Company Name: FCC US Agent, LLC Date: 04/17/2026

DATE:04/17/2026 FederalCommunicationsCommission Authorization&EvaluationDivision 7345OaklandMillsRoad Columbia,Maryland21046 AuthoritytoActasAgent Onourbehalf,IappointShenzhenEUTestingLaboratoryLimited (101,BuildingB1,FuqiaoFourthArea,QiaotouCommunityFuhaiSubdistrictBaoan District,Shenzhen,China)(NameofAgentcompanynameandaddress)toactasour agentinthepreparationofthisapplicationforequipmentcertification.Icertifythat submitteddocumentsproperlydescribethedeviceorsystemforwhichequipment certificationissought.Ialsocertifythateachunitmanufactured,importedormarketed,as definedintheFederalCommunicationsCommission’sregulationswillhaveaffixedtoita labelidenticaltothatsubmittedforapprovalwiththisapplication. Forinstanceswhereourauthorizedagentsignstheapplicationforcertificationonour behalf,Iacknowledgethatallresponsibilityforcomplyingwiththetermsandconditions forcertification,stillresideswithShenzhenEnvisionTechnologyInnovationCo.,Ltd. (301,Building4,1970ScienceandTechnologyPark,MinzhiStreet,LonghuaDistrict, Shenzhen,China)(ApplicantNameandaddress) Signed: Printedname:JasonTang Title:Manager CompanyName:ShenzhenEnvisionTechnologyInnovationCo.,Ltd. Date:04/17/2026

Date04/17/2026 FederalCommunicationsCommission Authorization&EvaluationDivision 7345OaklandMillsRoad Columbia,Maryland21046 RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorizeComplianceTesting,LLCtoactonourbehalfinallmatters relatingtoapplicationforequipmentauthorization,includingthesigningofalldocumentsrelatingto thesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothedenialof benefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988,21 U.S.C.853(a). Sincerely, Signed: Printedname:JasonTang Title:Manager CompanyName:ShenzhenEnvisionTechnologyInnovationCo.,Ltd. Date:04/17/2026

DATE04/17/2026 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:___2A9F7-RHEA______ ProductName:___Rhea___ RequestforConfidentiality PursuanttoSections0.457and0.459ofthecommission’srules,weherebyrequestthat thefollowingdocumentsbeheldconfidential: (Listherethedocumentsforwhichyouareseekingconfidentiality–forexample...)  Schematics Blockdiagram Operationdescription Thesematerialscontaintradesecretsandproprietaryinformationandarenot customarilyreleasedtothepublic.Thepublicdisclosureofthisinformationmightbe harmfultothecompanyandprovideunjustifiedbenefitstoourcompetitors. Signed: Printedname:JasonTang Title:Manager CompanyName:ShenzhenEnvisionTechnologyInnovationCo.,Ltd. Date:04/17/2026

DATE:04/17/2026 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:2A9F7-RHEA ProductName:Rhea RequestforShort-TermConfidentiality PursuanttoSections0.457and0.459ofthecommissionrules,andinaccordancewiththeFCCPublicnotice datedJune15,2004(DA04-1705),weherebyrequestshort-termconfidentialityforthefollowingitemspriorto marketingthedevice.: TestSetupPhotos ExternalPhotos InternalPhotos UserManual Theapplicantrequeststheexhibitsselectedaboveasshorttermconfidentialbewithheldfrompublicview foraperiodof180daysfromthedateoftheGrantofEquipmentAuthorizationandpriortomarketing.This istoavoidprematurereleaseofsensitiveinformationpriortomarketingorreleaseoftheproducttothe public. Signed: Printedname:JasonTang Title:Manager CompanyName:ShenzhenEnvisionTechnologyInnovationCo.,Ltd. Date:04/17/2026

ShenzhenEnvisionTechnologyInnovationCo.,Ltd. DeclarationonModelDifferences We, ShenzhenEnvisionTechnologyInnovationCo.,Ltd. 301,Building4,1970ScienceandTechnologyPark,MinzhiStreet,LonghuaDistrict, Shenzhen,China Declarethatthefollowingproduct(s): ProductName:Rhea ModelNo.:Rhea,Rhea-I,Rhea-II,Rhea-III,Rhea-IV,Rhea-V FCCID:2A9F7-RHEA Allmodelsaresamewithelectricalparametersandinternalcircuitstructure,butonlydifferin appearancecolorandmodelname.Therefore,the(Rhea)modelwillbetheprimarytest model. Themanufacturerwouldtakealltheresponsibilitiesfortheaboveproduct(s). Forandonbehalfof Shenzhen,China AuthorizedpersonLocation Name:JasonTang Position:Manager Dateofissue:2026-04-17 *IherebydeclarethatIamentitledtosignonbehalfoftheapplicantandthattheinformationsuppliediscorrectandcomplete.

LabelLocation Label Size:30*30mm ProductName:Rhea ModelNo.:Rhea FCCID:2A9F7-RHEA

RFEXPOSUREEVALUATION FCCID:2A9F7-RHEA AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeused toevaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF) RadiationasspecifiedinKDB447498D01: RoutineSARevaluationreferstothatspecificallyrequiredby§2.1093,using measurementsorcomputersimulation.WhenroutineSARevaluationisnot required,portabletransmitterswithoutputpowergreaterthantheapplicable lowthresholdrequireSARevaluationtoqualifyforTCBapproval. BLE: Channel (MHz) Maximum outputpower (dBm) Tuneup tolerance (dBm) MaxTune UpPower (dBm) Distance (mm) Calculation results Limit Operating Mode 24021.08 1.08±1 2.0850.5003 BLE 24400.220.22±11.2250.4143 24800.380.38±11.3850.4333 TestResults:PASS.

TESTREPORT ReportNo.:8429EU122421W Applicant:ShenzhenEnvisionTechnologyInnovationCo.,Ltd. Address:301,Building4,1970ScienceandTechnologyPark, MinzhiStreet,LonghuaDistrict,Shenzhen,China ProductName:Rhea ModelNo.:Rhea(refertoclause2.4) Trademark:N/A FCCID:2A9F7-RHEA TestStandard(s):47CFRPart15.247 TestResult:Pass DateofReceipt:Mar.24,2026 TestDate:Mar.24,2026-Apr.08,2026 DateofIssue:Apr.17,2026 ISSUEDBY: SHENZHENEUTESTINGLABORATORYLIMITED Preparedby:ReviewedandApprovedby: LandonQiu/EngineerSallyZhang/Manager Page2of57ReportNo.:8429EU122421W TRFVersion:A01 RevisionRecord ReportVersionIssuedDateDescriptionStatus V0Apr.17,2026OriginalValid Page3of57ReportNo.:8429EU122421W TRFVersion:A01 TableofContents 1COVERPAGE...........................................................................................................................................................1 2GENERALINFORMATION...............................................................................................................................5 2.1APPLICANTINFORMATION.......................................................................................................................5 2.2MANUFACTURERINFORMATION...............................................................................................................5 2.3FACTORYINFORMATION..........................................................................................................................5 2.4GENERALDESCRIPTIONOFE.U.T...........................................................................................................5 2.5TECHNICALINFORMATIONOFE.U.T........................................................................................................6 3TESTSUMMARY..............................................................................................................................................7 3.1TESTSTANDARD.....................................................................................................................................7 3.2TESTVERDICT........................................................................................................................................7 3.3TESTLABORATORY.................................................................................................................................8 4TESTCONFIGURATION...................................................................................................................................9 4.1TESTENVIRONMENT...............................................................................................................................9 4.2TESTEQUIPMENT...................................................................................................................................9 4.3DESCRIPTIONOFSUPPORTUNIT...........................................................................................................11 4.4TESTMODE..........................................................................................................................................11 4.5DESCRIPTIONOFCALCULATION............................................................................................................11 4.5.1FieldStrengthCalculation.....................................................................................................11 4.5.2DisturbanceCalculation........................................................................................................11 4.6MEASUREMENTUNCERTAINTY..............................................................................................................12 4.7DEVIATIONFROMSTANDARDS...............................................................................................................12 4.8ABNORMALITIESFROMSTANDARDCONDITION......................................................................................12 5EVALUATIONRESULTS(EVALUATION)......................................................................................................13 5.1ANTENNAREQUIREMENT.......................................................................................................................13 5.1.1TestSpecification..................................................................................................................13 5.1.2TestData...............................................................................................................................13 6RADIOSPECTRUMMATTERTESTRESULTS(RF)....................................................................................14 6.1CONDUCTEDEMISSIONATACPOWERLINE...........................................................................................14 6.1.1TestSpecification..................................................................................................................14 6.1.2E.U.T.Operation....................................................................................................................14 6.1.3TestSetupDiagram...............................................................................................................14 6.1.4TestData...............................................................................................................................14 6.26DBBANDWIDTH..................................................................................................................................17 6.2.1TestSpecification..................................................................................................................17 6.2.2E.U.T.Operation....................................................................................................................17 6.2.3TestSetupDiagram...............................................................................................................18 6.2.4TestData...............................................................................................................................18 6.3MAXIMUMCONDUCTEDOUTPUTPOWER...........................…

Text truncated - open the document above for the full version.

DongGuanSYLTechnologyCO.,LTD AntennaSpecification Manufacture：SYL ProductName：MYKJ-1302-BT-RX桃心-玫红Antenna AntennaType：Conductor TestDate：2026/4/11 Testedby ：CheckedBy:ApprovedBy: ChengMingWeiDuLinQianCongGen Dong Guan SYL TechnologyCO.,LTD 1.GeneralDescription Manufacturer：Dong Guan SYL TechnologyCO.,LTD Address： Room203,DongHuiIndustrialPark,No.198DaTangRoad, DongGuan,GuangDong,China ProductName： MYKJ-1302-BT-RX 桃心 - 玫红 Antenna Productmodel：MYKJ-1302-BT-RX桃心-玫红 AntennaType ：ConductorAntenna Test Frequency ： 2400-250 0MHz AntennaGain ：1.9dBi VSWR ：＜ 1.4 Impedance ：50 Ω Polarization：Linear DongGuanSYLTechnologyCO.,LTD 2.Antennasize: Dong Guan SYL TechnologyCO.,LTD 3. Gain and Efficiency 1. 9 Frequency Efficiency （%） Antenn a Gain ( dBi) 2400MHz 1.1 2440MHz 60.2% 56.2% 53.2% 2480MHz 1.2 DongGuanSYLTechnologyCO.,LTD 4.ReturnLoss 5.XY-Plane DongGuanSYLTechnologyCO.,LTD 6.XZ-Plane 7.YZ-Plane DongGuanSYLTechnologyCO.,LTD 8.3DRadiationPatternDiagram 10.TestSetupPhoto