2AYWU-EM038Electronic earmuff

ULTRA-THIN ELECTRONIC SHOOTING EARMUFF Adjustable Headband Sturdy & Durable Headband Battery Compartment 3.5mm Audio Jack Bluetooth button 4 Omnidirectional Microphones Sound Amplification Volume Control Knobs Ear Shell Incision Design Install batteries Insert 2 AAA batteries Match the + / - marks. Fit over both ears Adjust the headband. Ear cups must fully seal around ears. Power on Rotate the volume knob from OFF until itclicks. Pair Bluetooth Bluetooth Button Pairing Answer I End Call Reject Call Disconnect / Reconnect Hold until red/blue lights flash, then select "EM038". Press once. Press twice quickly. Press and hold. Hold the Bluetooth button, then select "EM038".

Earmuffs x13.5 mm Cable x1Storage Bag x1Manual x1 FCC ID: 2AYWU-EM038 Caution: 1.Do not mix old and new batteries, or use different types of batteries (alkaline, standard, or rechargeable) together.2.Blocking the microphone port may cause buzzing noise and reduce ambient sound amplification performance.3.An improper fit will decrease the device’s noise reduction effectiveness. Refer to the enclosed instructions for proper fitting guidance. PROHEAR, LLC warrants this product to the original purchaser to be free from de- fects in materials andworkmanship under normal use and conditions for a period of one year from the date of purchase. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are desig ned to provide reas on able protectio n agai nst harmful inter- fere nee in a reside ntial in stallatio n. This equipme nt gen erates uses and can radiate radio frequency en ergy and, if not in stalled and used in accorda nee with the in struc-tions, may cause harmful interferenee to radio communications. However, there is no guarantee that interferenee will not occur in a particular installation. If this equipment does cause harmful interferenee to radio or television reception, which can be determined by turning the equipment off and on, the user is en-couraged to try to correct the interference by one or more of the follow- ing mea-sures: -Reorient or relocate the receiving antenna. -In crease the separati on betwee n the equipme nt and receiver. · Connect the equipme nt into an outlet on a circuit d iff ere nt from that to whichthe receiver is connected. · Consuit the dealer or an experieneed radio/TV technician for help Changes or modifications not expressly approved by the party responsible for complianee could void the user's authority to operate the equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to Changes or modifications not expressly approved by the party responsible for complianee could void the user's authority to operate the equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)this device may not cause harmfuI interference, and (2)this device must accept any interferenee received, including interference that may cause undesired operation. PROHEAR provides a 1-YEAR WARRANTY. Customer satisfaction is our top priority. If you have any questions, concerns, or issues, please contact us at: [email protected], Our friendly customer service team willrespond within 24 hours. Volume Control Knob Power OnRotate from OFF until it clicks. Power OffRotate back to OFF until it clicks. Ambient VolumeRotate after power-on to adjust sound amplification. SNR 29dB Effective noise reduc- tion for enhanced hear- ing protection 4-MicPickup Crystal clear sound cap- ture in any direction HD Speakers Clear, balanced sound for an immersive audio experience Low Noise Frequency Tuned Natural sound clarity with 5X sound amplifica- tion for an authentic listening experience Bluetooth Audio Stable, low-latency audio streaming with long-range wireless freedom Sound Activated Compression 0.0005s reaction time for instant hearing protection 3.5mm Audio Jack Wired AudioPlug in the included 3.5mm cable to connect a device. NoteBluetooth and wired audio features depend on your source device.

Rev1/26/2023 HangzhouZHTechCo.,LTD FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-6-15 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2AYWU-EM038 HangzhouZHTechCo.,LTD(“theapplicant”)certifiesthattheequipmentforwhichauthorizationis soughtisnot“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuantto section2.903oftheFCCrules. HangzhouZHTechCo.,LTD(“theapplicant”)certifiesthattheequipmentforwhichauthorizationis soughtdoesnotincludecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc. oranyofitssuccessorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyof itssuccessorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB 986446D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, (signature) Name:HanwenXu Title:Manager Rev1/26/2023 HangzhouZHTechCo.,LTD FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026/6/15 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2AYWU-EM038 HangzhouZHTechCo.,LTD(“theapplicant”)certifiesthat,asofthedateofthefilingoftheapplication, theapplicantisnotidentifiedontheCoveredList(asaspecificallynamedentityoranyofitssubsidiaries oraffiliates)asanentityproducing“covered”equipment. Sincerely, (signature) Name:HanwenXu Title:Manager

HangzhouZHTechCo.,Ltd. Rev1/26/2023 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026/6/17 Ref:AttestationStatementsPart2.911(d)(7)Filing FCCIDorGranteeCode:FCCID:2AYWU-EM038or2AYWU ApplicantFRN:0030535207 HangzhouZHTechCo.,Ltd.( “ theapplicant ” )certifiesthat,asofthedateofthefilingoftheapplication, REPAmericaLLCisourdesignatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. HangzhouZHTechCo.,Ltd.acceptstomaintainanagentfornolessthanoneyearafterthegranteehas terminatedallmarketingandimportationortheconclusionofanyCommission-relatedproceeding involvingtheequipment. REPAmericaLLCaccepts,asofthedateofthefilingoftheapplication,theobligationofthedesignated U.S.agentforserviceofprocessfortheabovereferencedFCCID. DesignatedU.S.AgentInformation: Name:REPAmericaLLC S.AgentFRN:0034192500 Address:350TerrySt.200Longmont,CO80501UnitedStates ContactPerson:MrBenXu Tel.:(719)201-3314 Email:[email protected] Sincerely, HanwenXuMrBenXu HangzhouZHTechCo.,Ltd.REPAmericaLLC [InsertApplicantsignature][U.S.Agentsignature]

HangzhouZHTechCo.,LTD FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026/6/15 ConfidentialityRequestregardingapplicationforcertificationofFCCID:2AYWU-EM038 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestconfidential treatmentofinformationaccompanyingthisapplicationasoutlinedbelow: ExhibitType BlockDiagram OperationalDescription Schematics Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarilyreleasedto thepublic.Thepublicdisclosureofthesematerialsmaybeharmfultotheapplicantandprovide unjustifiedbenefitstoitscompetitors. TheapplicantunderstandsthatpursuanttoSection0.457oftheRules,disclosureofthis applicationandallaccompanyingdocumentationwillnotbemadebeforethedateoftheGrantfor thisapplication. PursuanttoDA04-1705June15,2004oftheCommission’spublicnotice,wealsorequest temporaryconfidentialtreatmentofinformationaccompanyingthisapplicationasoutlinedbelow: ExhibitType Sincerely, (signature) Name:HanwenXu Title:Manager

HangzhouZHTechCo.,LTD FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Date:2026-6-15 SUBJECT:FCCApplicationforFCCID:2AYWU-EM038 ToWhomItMayConcern: We,theundersigned,herebyauthorizeColinHuangatShenzhenDACETestingTechnology Co.,Ltd.onourbehalf,toapplytotheFederalCommunicationsCommissiononourequipment. AnyandallactscarriedoutbyShenzhenDACETestingTechnologyCo.,Ltd.onourbehalf shallhavethesameeffectasactsofourown. ThisistoadvisethatweareinfullcompliancewiththeAnti-DrugAbuseAct.We,theapplicant, arenotsubjecttoadenialoffederalbenefitspursuanttoSection5301oftheAnti-DrugActof 1988,21USC853a,andnopartytotheapplicationissubjecttoadenialoffederalbenefits pursuanttothatsection. Regards, Sincerely, (signature) Name:HanwenXu Title:Manager

FCCID: 2AYWU-EM038 HangzhouZHTechCo.,Ltd. Differencedeclaration WeHangzhouZHTechCo.,Ltd.applyforCE-RED/FCCIDcertification,productname:Electronic earmuff,Model:EM038,EM072 Theproducthasmanymodels,onlythemodelnameandcolorisdifferent,andtheotherparts suchasthecircuitprinciple,pcbandelectricalstructurearethesame.,themaintestmodel selectedisEM038 Company:HangzhouZHTechCo.,Ltd. Title:manager Name:HanwenXu Signature:

FCCID:2AYWU-EM038 External

FCCID:2AYWU-EM038 FCCIDplace Model:EM038 FCCID:2AYWU-EM038 INPUT:DC5.0V

FCCID:2AYWU-EM038 Internal ANT

Page1of1 RFExposureEvaluationReport 1RFEXPOSURE ProductName: Electronicearmuff ModelNo.: EM038 FCCID:2AYWU-EM038 2.RFExposureEvaluation FCCKDB447498D01GeneralRFExposureGuidancev06:MobileandPortableDevice,RF Exposure,EquipmentAuthorizationProcedures. FCCCFR47part11.1310:Radiofrequencyradiationexposurelimits. FCCCFR47part22.1093Radiofrequencyradiationexposureevaluation:portabledevices. 2.1LIMITS The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances ≤ 50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]*[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where  f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50 mmandfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmisappliedtodetermineSARtest exclusion. 2.2EUTRFEXPOSUREEVALUATION Channel (MHz) Conducted Power(dBm) Tuneup Tolerance(dBm) Maximum tune-upPower Calculated value Limit (dBm)(mW) 24022.31 2±1 31.9950.6183.0 Themax.Calculatedvalueis0.618<3.0,SothereisnorequireSARtest.

Productspecification Antennamoduleonthesystemboard FrequencRange2400～2500MHz Ant.PortInputPwr.(dBm)0(Typ.BTclass2outputpower) Tot.Rad.Pwr.(dBm)-1.2(Inputpwr-losspwr) PeakEIRP(dBm)1.2 Directivity(dBi)1(alldirectionantenna) Efficiency(dB)60.2% Gain(dBi) 1.9( Peak GainXZ-plane) MaximumPower(dBm)1.7(XY-plane) MinimumPower(dBm)-4(XY-plane) Avg.Power(dBm)-0.5(XY-plane) InputImpendence(ohm)50 PolarizationTypeVertical&Horizontal V.S.W.R<1.4 AntennamodelAN123 Antennaname.PCB ManufacturerHangzhouZHTechCo.,Ltd. Allthetechnicaldataandinformationcontainedhereinaresubjecttochangewithoutpriornotice AntennaLayout&moduleonthesystemboard AntennaGain GainTable UnitindBi XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. ModuleBoard 1.2-0.51.9-3.61.1-3.0 60.2% Loss 12.4000000GHz77.264Ω-22.032C3.0100- 员 Tr2544LogMag10.00dB/Ref0.000dB[F¹] 50.00 40.00 30.00 20.00 10.00 0.000 -10.00 -20.00 -30.00 -40.0 12.4000000GHz -11.425dB 22.4400000GHz-21.317dB >32.4800000GHZ-19.303dB Retum 3 22.4400000GHz56.1240-6.7828C9.6165pF >32.4800000GHz43.038Ω8.0241°C514.95pH TheEnvironmentofAntennaRadiationPattem Walkingchannl HornAntenna MetaishieldingRoo Absorber Tumingsupport m 3Dradiationpatterndiagram y 112.50dor -30 -35 -22.504em 92.0 -2.5 -5.200 。167 deg deg dB -40 dB XY-plane XZ-planeYZ-plane BNN:CrYrodstbnnpattemml2013W

V1.0ReportNo.:DACE260526001RF001 102,BuildingH1,&1/F.,BuildingH,HongfaScience&TechnologyPark,TangtouCommunity,ShiyanSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Web:http://www.dace-lab.comTel:+86-755-23010613E-mail:[email protected] 1 of 102 RFTESTREPORT For HangzhouZHTechCo.,Ltd. ProductName:Electronicearmuff TestModel(s):EM038 ReportReferenceNo.:DACE260526001RF001 FCCID:2AYWU-EM038 Applicant’sName:HangzhouZHTechCo.,Ltd. Address:No.6,ShunLeRoad,Jingshan,Yuhang,Hangzhou,China TestingLaboratory:ShenzhenDACETestingTechnologyCo.,Ltd. Address: 102,BuildingH1,&1/F.,BuildingH,HongfaScience&TechnologyPark, TangtouCommunity,ShiyanSubdistrict,Bao'anDistrict,Shenzhen, Guangdong,China TestSpecificationStandard:47CFRPart15.247 DateofReceipt:May26,2026 DateofTest:May26,2026toJune4,2026 DateofIssue:June4,2026 Result:Pass Note:Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofShenzhenDACE TestingTechnologyCo.,Ltd.ThisdocumentmaybealteredorrevisedbyShenzhenDACETestingTechnology Co.,Ltd.personnelonly,andshallbenotedintherevisionsectionofthedocument.Thetestresultsinthe reportonlyapplytothetestedsample V1.0ReportNo.:DACE260526001RF001 102,BuildingH1,&1/F.,BuildingH,HongfaScience&TechnologyPark,TangtouCommunity,ShiyanSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Web:http://www.dace-lab.comTel:+86-755-23010613E-mail:[email protected] 2 of 102 Applyforcompanyinformation Applicant’sName:HangzhouZHTechCo.,Ltd. Address:No.6,ShunLeRoad,Jingshan,Yuhang,Hangzhou,China ProductName:Electronicearmuff TestModel(s):EM038 SeriesModel(s):EM072 TestSpecificationStandard(s):47CFRPart15.247 NOTE1: Themanufacturershouldensurethatallproductsinseriesproductionareinconformitywiththeproductsampledetailedin thisreport.Iftheproductinthisreportisusedinanyconfigurationotherthanthatdetailedinthereport,themanufacturer mustensurethenewsystemcomplieswithallrelevantstandards. Compiledby: Supervisedby: Approvedby: LucyMo/TestEngineerBenTang/ProjectEngineer MachaelMo/ Manager June4,2026June4,2026June4,2026 V1.0ReportNo.:DACE260526001RF001 102,BuildingH1,&1/F.,BuildingH,HongfaScience&TechnologyPark,TangtouCommunity,ShiyanSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Web:http://www.dace-lab.comTel:+86-755-23010613E-mail:[email protected] 3 of 102 RevisionHistoryOfReport VersionDescriptionREPORTNo.IssueDate V1.0OriginalDACE260526001RF001June4,2026 V1.0ReportNo.:DACE260526001RF001 102,BuildingH1,&1/F.,BuildingH,HongfaScience&TechnologyPark,TangtouCommunity,ShiyanSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Web:http://www.dace-lab.comTel:+86-755-23010613E-mail:[email protected] 4 of 102 CONTENTS 1TESTSUMMARY...................................................................................................................................................6 1.1TESTSTANDARDS........................................................................................................................................6 1.2SUMMARYOFTESTRESULT.........................................................................................................................6 2GENERALINFORMATION....................................................................................................................................7 2.1CLIENTINFORMATION..................................................................................................................................7 2.2DESCRIPTIONOFDEVICE(EUT)..................................................................................................................7 2.3DESCRIPTIONOFTESTMODES....................................................................................................................8 2.4DESCRIPTIONOFSUPPORTUNITS................................................................................................................8 2.5EQUIPMENTSUSEDDURINGTHETEST........................................................................................................9 2.6STATEMENTOFTHEMEASUREMENTUNCERTAINTY....................................................................................11 2.7IDENTIFICATIONOFTESTINGLABORATORY.................................................................................................11 2.8ANNOUNCEMENT........................................................................................................................................11 3EVALUATIONRESULTS(EVALUATION)...........................................................................................................12 3.1ANTENNAREQUIREMENT............................................................................................................................12 3.1.1Conclusion:.................................................................................................................................12 4RADIOSPECTRUMMATTERTESTRESULTS(RF).........................................................................................13 4.120DBBANDWIDTH.....................................................................................................................................13 4.1.1E.U.T.Operation:........................................................................................................................13 4.1.2TestSetupDiagram:...................................................................................................................13 4.1.3TestData:...................................................................................................................................14 4.2MAXIMUMCONDUCTEDOUTPUTPOWER....................................................................................................15 4.2.1E.U.T.Operation:........................................................................................................................15 4.2.2TestSetupDiagram:...................................................................................................................15 4.2.3TestData:...................…

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FCCID:2AYWU-EM038 Emissionsinfrequencybands(below1GHz) Emissionsinfrequencybands(above1GHz)