2AFKR-KRZ-KTWIRELESS MICROPHONE

QUICK START GUIDE WIRELESS MICROPHONE 快速入门指南 KRZ-KT 输入：DC 5V 灵敏度：-49±3dB（at 1KHz） ( 0dB=1V/Pa ) 咪芯类型：动圈式 指向特性：单一指向 频率响应范围: 60-16KHz 通讯类型：UHF 通讯距离: ≥10m 电池容量：1200mAh 重量: 220g 尺寸: 52*52*252mm Input: DC 5V Sensitivity: -49±3dB（at 1KHz） ( 0dB=1V/Pa ) Microphone core type: dynamic type Directional characteristics: single direction Frequency response range: 60-16KHz Communication type: UHF Communication distance: ≥10m Battery capacity: 1200mAh Weight: 220g Size: 52*52*252mm Technical Specification 技术规格 ENCN ○ If consumers use a power adapter to charge, they should purchase a matching set of CCC certification and meet the standards Required power adapter. ○消费者若要使用电源适配器充电,则应购买配套使用获得CCC认证并满足标准要求的电源适配器。 KRZ-KT-20250522 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. 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 designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: •Reorient or relocate the receiving antenna. •Increase the separation between the equipment and receiver. •Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. •Consult the dealer or an experienced radio/TV technician for help. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. RF Exposure Information The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. FCC Statement FCC ID2AFKR-KRZ-KT MICROPHONE FUNCTION 麦克风功能 X1 X1 X1 ＞2 长按开关机 ON / OFF 调节频率 向左转打开盖子 Adjust the Frequency Turn left to open SET

CoveredEquipmentCertificationAttestationLetter 2025.12.22 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA ATTN.:ReviewingEngineer FCCID:2AFKR-KRZ-KT SHENZHENZEALOTDIGITALTECHNOLOGYCO.,LTD(“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipmentprohibitedfrom receivinganequipmentauthorizationpursuanttosection2.903oftheFCCrules. Note:Iftheequipmentforwhichtheapplicantseeksauthorizationisproducedby anyoftheentitiesidentifiedonthecurrentCoveredList,theapplicantshould includeanexplanationonwhytheequipmentisnot“covered”equipment. SHENZHENZEALOTDIGITALTECHNOLOGYCO.,LTD(“theapplicant”)certifiesthat,as ofthedateofthefilingoftheapplication,theapplicantisnotidentifiedontheCovered Listasanentityproducing“covered”equipment. SHENZHENZEALOTDIGITALTECHNOLOGYCO.,LTD(“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtdoesnotincludecybersecurityoranti-virus softwareproducedorprovidedbyKasperskyLab,Inc.oranyofitssuccessorsand assignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyofits successorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886 andKDB986446D01 CoveredEquipmentGuidancesectionB(2a). Signed: Printedname:JianLiu Title:Manager CompanyName:SHENZHENZEALOTDIGITALTECHNOLOGYCO.,LTD Date:2025.12.22

2025.12.22 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:2AFKR-KRZ-KT ProductName:WIRELESSMICROPHONE RequestforConfidentiality PursuanttoSections0.457and0.459ofthecommission’srules,weherebyrequestthat thefollowingdocumentsbeheldconfidential: (Listherethedocumentsforwhichyouareseekingconfidentiality–forexample...)  Schematics  Blockdiagram Operationdescription Thesematerialscontaintradesecretsandproprietaryinformationandarenot customarilyreleasedtothepublic.Thepublicdisclosureofthisinformationmightbe harmfultothecompanyandprovideunjustifiedbenefitstoourcompetitors. Name:JianLiu Title:Manager Company:SHENZHENZEALOTDIGITALTECHNOLOGYCO.,LTD

2025.12.22 FederalCommunicationsCommission Authorization&EvaluationDivision 7345OaklandMillsRoad Columbia,Maryland21046 RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorizeShenzhenBangceTestingTechnologyCo.,Ltd.toacton ourbehalfinallmattersrelatingtoapplicationforequipmentauthorization,includingthesigningofall documentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothedenialof benefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988,21 U.S.C.853(a). Sincerely, Name:JianLiu Title:Manager Company:SHENZHENZEALOTDIGITALTECHNOLOGYCO.,LTD

ReportNo.:CISRR25101102801 Page 36 of 39 8.EXTERNALANDINTERNALPHOTOS 8.1.ExternalPhotos ReportNo.:CISRR25101102801 Page 37 of 39

Label Size:30mm*20mm WIRELESS MICROPHONE Model No:KRZ-KT FCC ID:2AFKR-KRZ-KT Label Location

ReportNo.:CISRR25101102801 Page 38 of 39 8.2.InternalPhotos ReportNo.:CISRR25101102801 Page 39 of 39 ------Endofthereport----- ANT

ReportNo.:CISRR25101102802 Reporttemplateversion:CISE-TR-001-A0Page:1of5 TESTREPORT RFExposureEvaluation ReportNo.: CISRR25101102802 ProjectNo.: CISR251011028 FCCID:2AFKR-KRZ-KT Applicant:SHENZHENZEALOTDIGITALTECHNOLOGYCO.,LTD Address: 401、501，building3,NO.8,YongTaiRoad,eastDistrict,BaiShixia Community,FuYongstreet,BaoAnDistrict,ShenZhen Manufacturer:SHENZHENZEALOTDIGITALTECHNOLOGYCO.,LTD Address: 401、501，building3,NO.8,YongTaiRoad,eastDistrict,BaiShixia Community,FuYongstreet,BaoAnDistrict,ShenZhen ProductName: WIRELESSMICROPHONE TradeMark: - Model/Typereference:KRZ-KT ListedModel(s):- Standard:47CFRPart2.1093 Issuedate:January6,2026 Testresult:Complied Reviewedby:MorganTan Approvedby:HansHu Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangceTesting TechnologyCo.,Ltd. ReportNo.:CISRR25101102802 Reporttemplateversion:CISE-TR-001-A0Page:2of5 1.APPLICABLESTANDARD 47CFRPart2.1093:Radiofrequencyradiationexposureevaluation:portabledevices ANSIC95.1–3999:IEEEStandardforSafetyLevelswithRespecttoHumanExposuretoRadioFrequency ElectromagneticFields,3kHzto300GHz. FCCKDBpublication447498D01GeneralRFExposureGuidancev06:MobileandPortableDevicesRF ExposureProceduresandEquipmentAuthorizationPolicies. 47CFRPart1.1307:Actionsthatmayhaveasignificantenvironmentaleffect,forwhichEnvironmental Assessments(EAs)mustbeprepared. 2.REPORTVERSION VersionNo.IssuedateDescription 00January6,2026Original ReportNo.:CISRR25101102802 Reporttemplateversion:CISE-TR-001-A0Page:3of5 3.RADIOSPECIFICATIONDESCRIPTION Modulationtype:FM Operationfrequency:657.3-662.3MHz Note:PleaserefertoRFreportfordetailedtechnicalspecifications 4.SIMULTANEOUSTRANSMISSIONANALYSIS ThesedevicesuseasingletransmittermoduleandantennaforbothFM,FMcannottransmitsimultaneously. ReportNo.:CISRR25101102802 Reporttemplateversion:CISE-TR-001-A0Page:4of5 5.TESTRESULT 5.1.Standalonetransmission Limit: KDB447498D01v06,Clause4.3.1a) For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-g SARtestexclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]*[√f(GHz)]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation31The resultisroundedtoonedecimalplaceforcomparison Thevalues3.0and7.5arereferredtoasnumericthresholdsinstepb)below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mm, andfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingto4.1f)isappliedtodetermine SARtestexclusion. Result: Passed TestData Radiotype Frequency (GHz) Maximum output power #1 (dBm) Antenna gain #2 (dBi) Maximum EIRP #3 (dBm) Maximum tune-up EIRP #4 (dBm) Minimum distance (mm) Evaluated value LimitResult FM0.66236.6621.78.369.005.001.29263.00PASS Note #1:ThisvaluecomesfromtheRFtestreport. #2:Thisvalueisdeclaredbytheapplicant. #3:EIRP=Maximumoutputpower+Antennagain. #4:Thisvalueisdeclaredbytheapplicant. ReportNo.:CISRR25101102802 Reporttemplateversion:CISE-TR-001-A0Page:5of5 5.2.Simultaneoustransmission Limit: KDB447498D01v06,Clause4.3.2,47CFRPart1.1307 InthecaseofxedRFsourcesoperatinginthesametime-averagingperiod,orof multiplemobileorportableRFsourceswithinadeviceoperatinginthesametime averagingperiod,ifthesumofthefractionalcontributionstotheapplicablethresholds islessthanorequalto1asindicatedinthefollowingequation. Where a=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(B)ofthissectionforP,includingexistingexempttransmittersandthosebeing added. b=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(C)ofthissectionforThresholdERP,includingexistingexempttransmittersand thosebeingadded. c=numberofexistingfixed,mobile,orportableRFsourceswithknownevaluationforthespeci edminimumdistanceincludingexistingevaluatedtransmitters. P j =theavailablemaximumtime-averagedpowerortheERP,whicheverisgreater,forxed, mobile,orportableRFsourceiatadistancebetween0.5cmand40cm(inclusive). P th,j =theexemptionthresholdpower(P)accordingtoparagraph(b)(3)(i)(B)ofthissectionfor xed,mobile,orportableRFsourcei. ERP j =theERPoffixed,mobile,orportableRFsourcej. ERP th,j =exemptionthresholdERPforfixed,mobile,orportableRFsourcej,atadistanceofat leastλ/2πaccordingtotheapplicableformulaofparagraph(b)(3)(i)(C)ofthissection. Evaluated k =themaximumreportedSARorMPEoffixed,mobile,orportableRFsourcekeither inthedeviceoratthetransmittersitefromanexistingevaluationatthelocationofexposure. ExposureLimit k =eitherthegeneralpopulation/uncontrolledmaximumpermissibleexposure (MPE)orspecicabsorptionrate(SAR)limitforeachxed,mobile,orportableRFsourcek, asapplicablefrom§1.1310ofthischapter. Result:NotApplicable --------EndofReport--------

专业天线服务商 深圳市飞敏科技有限公司 S H E N Z H E NF E I M I NT E C H N O L O G YCO., L T D. 项目型号640-690M 弹簧天线 天线型号 测试许高富 审核陈泽雄 日期2025-12-26 天线测试报告 Antenna test report SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723 Mail:[email protected] URL:www.fmant.cn 测试设备和测试环境 Test equipment and test environment SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723 Mail:[email protected] URL:www.fmant.cn 测试设备 Test equipment 无源指标 增益 效率 3D方向图 有源指标 TRP总辐射功率 TIS总接收灵敏度 探头微波暗室 频率：0.4GHz至6GHz 主要测试指标 SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723 Mail:[email protected] URL:www.fmant.cn 测试设备 Test equipment Agilent E5071C矢量网络分析仪 频率：300 kHz至8.5GHz R&S CMW500 宽带无线通信测试仪 GSM/3G/4G WIFI/ Bluetooth NB-IoT SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723 Mail:[email protected] URL:www.fmant.cn 天线驻波比 Antenna SWR SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723 Mail:[email protected] URL:www.fmant.cn 天线回波损耗 Antenna Return loss 天线增益与效率 Antenna gain and efficiency SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723 Mail:[email protected] URL:www.fmant.cn Freq(MHz) Efficiency (％) Gian(dBi) 640 35.49 1.32 645 35.13 1.51 650 34.43 1.45 655 34.21 1.70 660 33.65 1.38 665 36.08 1.40 670 36.48 1.42 675 35.54 1.41 680 33.40 1.29 685 32.20 1.43 690 30.62 1.68 插入图片1插入图片2 插入图片3插入图片4 天线辐射方向图 Antenna Radiation Pattern SHENZHEN FEIMIN TECHNOLOGY CO.,LTD. TEL:0755-23035723 Mail:[email protected] URL:www.fmant.cn Thanks for your support！ 感谢您的支持！ 深圳市宝安区西乡街道固兴社区盛辉路4号科运达电商基地8楼801室 TEL:(86)755-23035723. FAX:0755-23036702 E-mail:[email protected] Room 801, 8th Floor,KeyunndaE-commerce Base,No. 4 ShenghuiRoad, GuxingCommunity,XixiangStreet,Bao‘an,District,Shenzhen

ReportNo.:CISRR25101102801 Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangce TestingTechnologyCo.,Ltd. Page1of33 TESTREPORT ReportNo.CISRR25101102801 ProjectNo.CISR251011028 FCCID2AFKR-KRZ-KT ApplicantSHENZHENZEALOTDIGITALTECHNOLOGYCO.,LTD Address 401、501，building3,NO.8,YongTaiRoad,eastDistrict,BaiShixia Community,FuYongstreet,BaoAnDistrict,ShenZhen ManufacturerSHENZHENZEALOTDIGITALTECHNOLOGYCO.,LTD Address 401、501，building3,NO.8,YongTaiRoad,eastDistrict,BaiShixia Community,FuYongstreet,BaoAnDistrict,ShenZhen ProductNameWIRELESSMICROPHONE Trademark- Model/TypereferenceKRZ-KT ListedModel(s)- Standard 47CFRPart15.236 DateofsamplereceiptDecember8,2025 TestdateDecember8,2025toJanuary6,2026 IssuedateJanuary6,2026 TestresultComplied Reviewedby:MorganTan Approvedby:HansHu ReportNo.:CISRR25101102801 Page 2 of 33 Contents 1.STANDARDANDAPPLICABLETESTMETHODS........................................................................................3 2.REPORTVERSION..........................................................................................................................................3 3.TESTDESCRIPTION.......................................................................................................................................4 4.SUMMARY........................................................................................................................................................5 4.1.ProductDescription*..................................................................................................................................5 4.2.RadioSpecificationDescription*..............................................................................................................5 4.3.ModificationofEUT.....................................................................................................................................5 4.4.Deviationfromstandards...........................................................................................................................5 4.5.TestingSite...................................................................................................................................................6 5.TESTCONFIGURATION.................................................................................................................................7 5.1.Testfrequencylist.......................................................................................................................................7 5.2.Descriptionsoftestmode...........................................................................................................................7 5.3.Supportunitusedintestconfiguration....................................................................................................7 5.4.Testsampleinformation.............................................................................................................................7 5.5.Environmentalconditions...........................................................................................................................7 5.6.EquipmentUsedduringtheTest................................................................................................................8 6.TESTRESULTS.............................................................................................................................................10 6.1.EvaluationResults(Evaluation)...............................................................................................................10 6.1.1.Antennarequirement..............................................................................................................................10 6.1.2.ConductedEmissionatACpowerline.................................................................................................11 6.2.RadioSpectrumMatterTestResults(RF)...............................................................................................14 6.2.1.OccupiedBandwidth..............................................................................................................................14 6.2.2.FrequencyTolerance..............................................................................................................................16 6.2.3.Themaximumradiatedpower...............................................................................................................18 6.2.4.EmissionMask........................................................................................................................................19 6.2.5.Emissionsinfrequencybands(below30MHz)...................................................................................22 6.2.6.Emissionsinfrequencybands(30M-1GHz).........................................................................................24 6.2.7.Emissionsinfrequencybands(Above1GHz).....................................................................................29 ReportNo.:CISRR25101102801 Page 3 of 33 1.STANDARDANDAPPLICABLETESTMETHODS Thetestswereperformedaccordingtofollowingstandards: 47CFRPart15.236:Operationofwirelessmicrophonesinthebands614-698MHz ANSIC63.10-2020:AmericanNationalStandardofProceduresforComplianceTestingofUnlicensed WirelessDevices. 2.REPORTVERSION VersionNo.IssuedateDescription 00January6,2026Original ReportNo.:CISRR25101102801 Page 4 of 33 3.TESTDESCRIPTION No.TestItemStandardRequirementResult 1Antennarequirement47CFR15.203Pass 2OccupiedBandwidth47CFR15.236(f)(2)Pass 3FrequencyTolerance47CFR15.236(f)(3)Pass 4Themaximumradiatedpower47CFR15.236(d)Pass 5EmissionMask47CFR15.236(g)Pass 6 Emissionsinfrequencybands(below 30MHz) 47CFR15.209Pass 7 Emissionsinfrequencybands(30M- 1GHz) 47CFR15.236(g)Pass 8 Emissionsinfrequencybands(Above 1GHz) 47CFR15.236(g)Pass Note: ‒Themeasurementuncertaintyisnotincludedinthetestresult. ReportNo.:CISRR25101102801 Page 5 of 33 4.SUMMARY 4.1.ProductDe…

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ReportNo.:CISRR25101102801 Page 34 of 39 7.TESTSETUPPHOTOS ConductedEmissionatACpowerline Emissionsinfrequencybands(below30MHz) ReportNo.:CISRR25101102801 Page 35 of 39 Themaximumradiatedpower Emissionsinfrequencybands(30M-1GHz) Emissionsinfrequencybands(Above1GHz)