2AR2S-DLM5401UHF Wireless Microphone

MMDHongKongHoldingLimited Address:Units1208-11,12thFloor,C-BonsInternationalCenter,108WaiYipStreet,Kwun Tong,Kowloon,HongKong Date:2026-09-07 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsPart2.911(d)(7)Filing SUBJECT:FCCApplicationforFCCID:2AR2S-DLM5401 FRN:0028068138 (“MMDHongKongHoldingLimited”)certifiesthat,asofthedateofthefilingoftheapplication, GOLDENVICTORYINTERNATIONALTRADINGCOLTDisourdesignatedU.S.agentfor serviceofprocessfortheabovereferencedFCCID.(“MMDHongKongHoldingLimited”) acceptstomaintainanagentfornolessthanoneyearafterthegranteehasterminatedall marketingandimportationortheconclusionofanyCommission-relatedproceedinginvolving theequipment. GOLDENVICTORYINTERNATIONALTRADINGCOLTDaccepts,asofthedateofthefiling oftheapplication,theobligationofthedesignatedU.S.agentforserviceofprocessforthe abovereferencedFCCID. DesignatedU.S.AgentInformation: Name:GOLDENVICTORYINTERNATIONALTRADINGCOLTD Address:11016THSTREETSUITE1400DENVER,CO80202UnitedStates FRN:0036377570 ContactPerson:LeonHowar Tel.:(337)255-0461 Email:[email protected] Sincerely, Signedonbehalfof（MMDHongKong HoldingLimited） SignedonbehalfofGOLDENVICTORY INTERNATIONALTRADINGCOLTD Name:TomasGuanName:LeonHowar Title:Safety&ApprobationManagerTitle:Manager Date:2026-09-07Date:2026-09-07

Rev1/26/2023 (MMDHongKongHoldingLimited) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:09-01-2026 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2AR2S-DLM5401 (“MMDHongKongHoldingLimited”)certifiesthattheequipmentforwhichauthorizationissoughtis not“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903oftheFCCrules. (“MMDHongKongHoldingLimited”)certifiesthattheequipmentforwhichauthorizationissoughtdoes notincludecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc.oranyofits successorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyofits successorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB986446 D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, (Applicantsignature): (Applicantprintedname):TomasGuan Rev1/26/2023 (MMDHongKongHoldingLimited) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:09-01-2026 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2AR2S-DLM5401 (“MMDHongKongHoldingLimited”)certifiesthat,asofthedateofthefilingoftheapplication,MMD HongKongHoldingLimitedisnotidentifiedontheCoveredList(asaspecificallynamedentityoranyof itssubsidiariesoraffiliates)asanentityproducing“covered”equipment. Sincerely, (Applicantsignature): (Applicantprintedname):TomasGuan

MMDHongKongHoldingLimited Date:September7,2026 ProductModelNumber:YW13,YW14 FCCID:2AR2S-DLM5401 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By: ContactListedonFCCWesbite Title:Safety&ApprobationManager Email:[email protected] Telephone:86-755-36358341 Onbehalfof:MMDHongKongHoldingLimited

MMDHongKongHoldingLimited OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:September7,2026 Subject;RequestforConfidentiality FCCID:2AR2S-DLM5401 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:TomasGuan Title:Safety&ApprobationManager

MMDHONGKONGHOLDINGLIMITED ModelDifference Productdescription:UHFWirelessMicrophone Modelname:DLM5401,DLM5401SP/00,DLM5401TP/00,DLM5401SP/61, DLM5401TP/61,DLM5401xx/yy(x=A-Zfordifferentpackage,y=0-9forsalesregion) FCCID:2AR2S-DLM5401 DLM5401isthetestmodel,whileothermodelsarederivativemodels.Thesemodelsare thesameonthecircuit,withonlydifferentmodelnames.Therefore,thetestdataof DLM5401canrepresenttheremainingmodels. Client’ssignature: Client’sname/title:TomasGuan/Safety&ApprobationManager Contactinformation/address:Units1208-11,12thFloor,C-BonsInternationalCenter, 108WaiYipStreet,KwunTong,Kowloon,HongKong

FCCID:2AR2S-DLM5401 EUTPHOTOSExternalPhotos FCCID:2AR2S-DLM5401 FCCID:2AR2S-DLM5401 FCCID:2AR2S-DLM5401 ※※※※※ENDOFREPORT※※※※※

size size

FCCID:2AR2S-DLM5401 EUTPHOTOSInternalPhotos FCCID:2AR2S-DLM5401 FCCID:2AR2S-DLM5401 ANT FCCID:2AR2S-DLM5401 FCCID:2AR2S-DLM5401 ※※※※※ENDOFREPORT※※※※※

FCCID:2AR2S-DLM5401 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, Mode Max Power (dBm) Tune-up power (dBm) Max Power (mW) Frequency(MHz) Min. Distance (mm) Calc. thresholds limit FM-12.20-12±10.08579.550.01213.0 SoaSARtestisnotrequired.

Spring antenna Yang XuanXiaxingxiMa dongdong / ShenZhen City FeiMin Technology CO.,LTD. Table of contents SPECIFICATION FOR APPROVED VersionData Status First edition Wire diameter0.8MM Product Technical Parameters Product Name Spring antenna Material Stainless steel wire Wire diameter Outer diameter Length Number of turns

ProjectNo.:ZHT-260518116W01 Page 1 of 43 ApplicantName...............:MMDHongKongHoldingLimited Address............................:Units1208-11,12thFloor,C-BonsInternationalCenter,108WaiYipStreet, KwunTong,Kowloon,HongKong ManufacturerName.........:KEYSTARELECTRONICTECHNOLOGYCO.,LTD Address............................:EMMACAU,AVENIDADEVENCESLAUDEMORAISNS205-207 INDUSTRIAL,CHUNFOC4.ANDAR Product............................:UHFWirelessMicrophone Model(s)...........................:DLM5401 AdditionalModel(s)..........:DLM5401SP/00,DLM5401TP/00,DLM5401SP/61,DLM5401TP/61, DLM5401xx/yy(x=A-Zfordifferentpackage,y=0-9forsalesregion) Trademark........................:PHILIPS ModelDifference..............:DLM5401isthetestmodel,whileothermodelsarederivativemodels.These modelsarethesameonthecircuit,withonlydifferentmodelnames. Therefore,thetestdataofDLM5401canrepresenttheremainingmodels. Preparedby......................:GuangdongZhonghanTestingTechnologyCo.,Ltd. Address............................:Room104/201,Building1,YibaolaiIndustrialPark,Qiaotou,Fuhai Subdistrict,Bao'anDistrict,Shenzhen,Guangdong,China DateofReceipt................:May18,2026 DateofTest(s)..................:May18,2026toSep.7,2026 DateofIssue....................:Sep.7,2026 TestRequested................:Selecttest(s)asrequestedbytheclient. TestStandard(s)...............:FCCCFR47Part15Section15.236 Testprocedure..................:ANSIC63.10-2020+Cor.1-2023+C63.10a-2024+ErratatoC63.10a-2024 Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove. PreparedbyReviewedby:Approvedby: LeonLi/EngineerBaretWu/DirectorLeviLee/Manager Note:ThisdevicedescribedabovehasbeentestedbyZHT,andthetestresultsshowthattheequipment undertest(EUT)isincompliancewiththeFCCrequirements.Anditisapplicableonlytothetestedsample identifiedinthereport.Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofZHT, thisdocumentmaybealteredorrevisedbyZHT,personalonly,andshallbenotedintherevisionofthe document. FCCTESTREPORT FCCID:2AR2S-DLM5401 ProjectNo.:ZHT-260518116W01 Page 2 of 43 TableofContentsPage 1.SUMMARYOFTESTRESULTS.............................................................................................................4 2.GENERALINFORMATION...................................................................................................................5 2.1GENERALDESCRIPTIONOFEUT...............................................................................................5 2.2DESCRIPTIONOFTESTMODES..................................................................................................7 2.3TESTSETUPCONFIGURATION....................................................................................................7 2.4DESCRIPTIONOFSUPPORTUNITS(CONDUCTEDMODE)......................................................8 3.TESTFACILITYANDTESTINSTRUMENTUSED................................................................................9 3.1TESTFACILITY...............................................................................................................................9 3.2INSTRUMENTLISTFORALLTESTITEMS..................................................................................9 3.3TESTINGSOFTWARE..................................................................................................................10 3.4MEASUREMENTUNCERTAINTY................................................................................................11 4.EMCEMISSIONTEST..........................................................................................................................12 4.1CONDUCTEDEMISSIONMEASUREMENT................................................................................12 4.1.1POWERLINECONDUCTEDEMISSIONLIMITS...............................................................12 4.1.2TESTPROCEDURE.............................................................................................................12 4.1.3DEVIATIONFROMTESTSTANDARD................................................................................12 4.1.4TESTSETUP........................................................................................................................13 4.1.5EUTOPERATINGCONDITIONS.........................................................................................13 4.1.6TESTRESULTS...................................................................................................................13 4.2RADIATEDEMISSIONMEASUREMENT.....................................................................................14 4.2.1RADIATEDEMISSIONLIMITS............................................................................................14 4.2.2DEVIATIONFROMTESTSTANDARD................................................................................15 4.2.3TESTSETUP........................................................................................................................15 4.2.4TESTPROCEDURE.............................................................................................................15 4.2.5TESTRESULTS...................................................................................................................15 5.RFOUTPUTPOWER............................................................................................................................29 5.1APPLIEDPROCEDURES/LIMIT.................................................................................................29 5.2TESTPROCEDURE......................................................................................................................29 5.3DEVIATIONFROMSTANDARD...................................................................................................29 5.4TESTSETUP.................................................................................................................................29 5.5EUTOPERATIONCONDITIONS........................................................................................…

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FCCID:2AR2S-DLM5401 EUTTESTPHOTOS ※※※※※ENDOFREPORT※※※※※