2A9F7-POPTINTPoptint

ShenzhenEnvisionTechnologyInnovationCo.,Ltd. CoveredEquipmentCertificationAttestationLetter 04/10/2026 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA ATTN.:ReviewingEngineer FCCID:2A9F7-POPTINT 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:04/10/2026

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 04/10/2026 TO: Feder al Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2A9F7-POPTINT 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: C ompany 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 abov e contact person accepts the obligation for service of process. The appl icant 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. A pplicant Signed: Agent Signed (if different from Applicant): Signed: Printed name: Jason Tang Title: Manager Company Name: Shenzhen Envision Technology Innovation Co., Ltd. Date: 04/10/2026 S igned: Printed name: Tim Payne Title: Manager Company Name: FCC US Agent, LLC Date: 04/10/2026

DATE:04/10/2026 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:2A9F7-POPTINT ProductName:Poptint 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:04/10/2026

ShenzhenEnvisionTechnologyInnovationCo.,Ltd. DeclarationonModelDifferences We, ShenzhenEnvisionTechnologyInnovationCo.,Ltd. 301,Building4,1970ScienceandTechnologyPark,MinzhiStreet,LonghuaDistrict, Shenzhen,China Declarethatthefollowingproduct(s): ProductName:Poptint ModelNo.:Poptint,Poptint-I,Poptint-II,Poptint-III,Poptint-IV,Poptint-V FCCID:2A9F7-POPTINT Allmodelsaresamewithelectricalparametersandinternalcircuitstructure,butonlydifferin appearanceandmodelname.Therefore,the(Poptint)modelwillbetheprimarytestmodel. Themanufacturerwouldtakealltheresponsibilitiesfortheaboveproduct(s). Forandonbehalfof Shenzhen,China AuthorizedpersonLocation Name:JasonTang Position:Manager Dateofissue:2026-04-10 *IherebydeclarethatIamentitledtosignonbehalfoftheapplicantandthattheinformationsuppliediscorrectandcomplete.

DATE:04/10/2026 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:04/10/2026

Date04/10/2026 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:04/10/2026

DATE04/10/2026 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:___2A9F7-POPTINT______ ProductName:___Poptint___ 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:04/10/2026

LabelLocation Label Size:40*50mm ProductName:Poptint ModelNo.:Poptint Input:5VDC FCCID:2A9F7-POPTINT

RFEXPOSUREEVALUATION FCCID:2A9F7-POPTINT 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 2402-1.61-1.61±1-0.6150.2693 BLE 2440-0.77-0.77±10.2350.3293 2480-0.52-0.52±10.4850.3523 2402-1.63-1.63±1-0.6350.2683 2440-1.04-1.04±1-0.0450.3103 2480-0.56-0.56±10.4450.3493 TestResults:PASS.

TESTREPORT ReportNo.:8429EU122420W Applicant:ShenzhenEnvisionTechnologyInnovationCo.,Ltd. Address:301,Building4,1970ScienceandTechnologyPark, MinzhiStreet,LonghuaDistrict,Shenzhen,China ProductName:Poptint ModelNo.:Poptint(refertoclause2.4) Trademark:N/A FCCID:2A9F7-POPTINT TestStandard(s):47CFRPart15.247 TestResult:Pass DateofReceipt:Mar.24,2026 TestDate:Mar.25,2026-Apr.03,2026 DateofIssue:Apr.09,2026 ISSUEDBY: SHENZHENEUTESTINGLABORATORYLIMITED Preparedby:ReviewedandApprovedby: LandonQiu/EngineerSallyZhang/Manager Page2of70ReportNo.:8429EU122420W TRFVersion:A01 RevisionRecord ReportVersionIssuedDateDescriptionStatus V0Apr.09,2026OriginalValid Page3of70ReportNo.:8429EU122420W 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..................…

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Dong Guan SYL Technology CO.,LTD Antenna Specification Manufacture：SYL Product Name：X-MEN-HJX8017-BT-RX 泰罗一代 Antenna Antenna Type：PCB Test Date：2026/3/16 Tested by： Checked By: Approved By: ChengMingWei DuLin QianCongGen Dong Guan SYL Technology CO.,LTD 1.General Description Manufacturer： Dong Guan SYL Technology CO.,LTD Address： Room 203,DongHui Industrial Park,No.198 DaTang Road, DongGuan, GuangDong,China Product Name： X-MEN-HJX8017-BT-RX 泰罗一代 Antenna Product model： X-MEN-HJX8017-BT-RX 泰罗一代 Antenna Type： PCB Antenna Test Frequency： 2400-2500MHz Antenna Gain： 1.9dBi VSWR： ＜1.4 Impedance： 50Ω Polarization： Linear Dong Guan SYL Technology CO.,LTD 2.Antenna size: Dong Guan SYL Technology CO.,LTD 3.Gain and Efficiency 1.9 Frequency Efficiency （%） Antenna Gain ( dBi) 2400MHz 1.1 2440MHz 60.2% 56.2% 53.2% 2480MHz 1.2 Dong Guan SYL Technology CO.,LTD 4.ReturnLoss 5.XY-Plane Dong Guan SYL Technology CO.,LTD 6.XZ-Plane 7. YZ-Plane Dong Guan SYL Technology CO.,LTD 8.3D Radiation Pattern Diagram 10.Test Setup Photo