2ADZC-M28R1Wireless Microphone

ShenzhenHollylandTechnologyCo.,Ltd Date:17June2026 To:FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Attestation Section2.911(d)(5)(i)andSection2.911(d)(5)(ii) (KDB986446D01CoveredEquipment) Section2.911(d)(5)(i) ShenzhenHollylandTechnologyCo.,Ltd(“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipmentprohibited fromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCC rules. Thesoftwaretobeloadedpriortomarketingoftheequipmentidentifiedbelowisnot "covered"softwaremanufacturedbyanyentityincludingpredecessors,successors, parents,subsidiaries,oraffiliatesoranyentitywhichhasrebrandedorrelabeledthe softwareproducedbytheentity(ies)identifiedonthe"CoveredList"DA24-886and KDB986446D01CoveredEquipmentGuidancesectionB(2a). ShenzhenHollylandTechnologyCo.,Ltd(“theapplicant”)furthercertifiesthatno Cybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc.or anyofitssuccessorsandassignees,includingequipmentwithintegratedKaspersky Lab,Inc.(oranyofitssuccessorsandassignees)cybersecurityoranti-virussoftware isinstalledintheequipmentbeingcertified. Section2.911(d)(5)(ii) ShenzhenHollylandTechnologyCo.,Ltd(“theapplicant”)certifiesthat,asofthe dateofthefilingoftheapplication,theapplicant[isnot]identifiedontheCoveredList (asaspecificallynamedentityoranyofitssubsidiariesoraffiliates)asanentity producing“covered”equipment. TypeofEquipmentsubjecttoFCCCertification:FCCID:2ADZC-M28R1 Ifyouhaveanyquestions,pleasefeelfreetocontactme ContactPerson:VincentMa PositionintheCompany:SalesDirector DateofSignature:2026/6/17 ___________________________ Signatory (signatureoftheapplicant)

[ShenzhenHollylandTechnologyCo.,Ltd] Rev1/26/2023 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:17-Jun-26 Ref:AttestationStatementsPart2.911(d)(7)Filing FCCID:2ADZC-M28R1 FRN：0024211138 [ShenzhenHollylandTechnologyCo.,Ltd](“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,HEVOTECHNOLOGYCORPORATIONisourdesignatedU.S.agentforserviceofprocessfor theabovereferencedFCCID.[ShenzhenHollylandTechnologyCo.,Ltd]acceptstomaintainanagentfor nolessthanoneyearafterthegranteehasterminatedallmarketingandimportationortheconclusion ofanyCommission-relatedproceedinginvolvingtheequipment.HEVOTECHNOLOGYCORPORATION HEVOTECHNOLOGYCORPORATIONaccepts,asofthedateofthefilingoftheapplication,theobligation ofthedesignatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. DesignatedU.S.AgentInformation: Name:HEVOTECHNOLOGYCORPORATION FRN：0033495417 Address:4EXECUTIVECIRCLE,SUITE120IRVINECALIFORNIA92614UnitedStates ContactPerson:vincent.ma Tel.:(949)-932-0648 Email:[email protected] Sincerely, [ShenzhenHollylandTechnologyCo.,Ltd]HEVOTECHNOLOGYCORPORATION (VincentMa)(vincent.ma) (Applicantsignature)(USAgentSignature)

Date:17June2026 ShenzhenHollylandTechnologyCo.,Ltd To:FederalCommunicationsCommission, Authorization&EvaluationDivision, 7435OaklandMillsRoad, Columbia,MD21046 ToWhomItMayConcern: TheShenzhenHollylandTechnologyCo.,Ltdtheundersigned,herebyauthorizesMr.Wu XuewenfromShenzhenBALUNTechnologyCo.,Ltd.,toactonthebehalfoftheShenzhen HollylandTechnologyCo.,LtdsolelyinmattersrelatingtotheapplicationforanFCCequipment authorizationforFCCID:2ADZC-M28R1includingthesigningofdocumentsinconnectionwith thisApplication.NecessaryactscarriedoutbyShenzhenBALUNTechnologyCo.,Ltd.in connectionwiththeApplicationshallhavethesameeffectasactsoftheShenzhenHollyland TechnologyCo.,Ltd TheShenzhenHollylandTechnologyCo.,Ltdalsoherebycertifythatnopartytothisapplication issubjecttoadenialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti- DrugAbuseActof1988,21U.S.C.Section862. YoursSincerely, VincentMa

Date:17June2026 ShenzhenHollylandTechnologyCo.,Ltd To:FederalCommunicationsCommission, Authorization&EvaluationDivision, 7435OaklandMillsRoad, Columbia,MD21046 Re:ShenzhenHollylandTechnologyCo.,Ltd FCCID:2ADZC-M28R1 FCCCertificationConfidentialityRequest Gentlemen: Thisletteristocomplywith47CFR0.457and0.459pertainingtoconfidentiality material.ShenzhenHollylandTechnologyCo.,Ltdrequeststhatthefollowing documentsregardingthissubmissionforFCCID:2ADZC-M28R1bekept confidential: ExhibitTypeFileName BlockDiagramBlockDiagram.pdf SchematicsSchematics.pdf OperationalDescriptionOperationalDescription.pdf Tune-upTune-up.PDF Andbelowexhibitkeptshort-termconfidential(180days): ExternalphotosExternalphotos.pdf Testsetupphotostestphoto.pdf InternalphotosInternalphotos.pdf UsermanualUsermanual.pdf Thosedocumentscontaindetailedsystemandequipmentdescriptionandrelated informationabouttheproductwhichShenzhenHollylandTechnology Co.,Ltdconsiderstobeconfidentialproprietary,acustomdesignand,otherwise, notreleasabletothegeneralpublic.Sincethisdesignisabasisformwhichfuture technologicalproductswillevolve,ShenzhenHollylandTechnologyCo.,Ltd considersthisinformationwouldbeofbenefittoitscompetitors,andthatthe disclosureoftheinformationinthesedocumentswouldgivecompetitorsanunfair advantageinthemarket. YoursSincerely, VincentMa

V1.0 RX USBC(透明贴纸)-丝印认证 1 2 3 4 5 6 A B C D 1 2 3 4 5 6 A B C D 注：仅红色区域为丝印信息 投影法 第三角投影法 深圳市昊一源科技有限公司 比例 1:1 材料 项目名称 A6118 设计 张哲 20260305 20260305 20260305 版本 零件名称 审核 姚立清 图幅 公制 图纸编号 批准 第 1 张 共 1 张 零件编号 标记 变更内容 版本 变更者 日期 V0.9 张哲 20260417初版发行 简业成 / / 技术要求：丝印 内容： 22.0MM 0.44MM 0.755MM ±2° ±1° ±0.5° ±0.5 ±0.2 ±0.15 ±0.3 ±0.15 ±0.1 ±0.1 ±0.05 角度θ L≥30 6<L≤30 0<L≤6 c(粗糙级) m(中等级) f(精密级) 尺寸分段 未标注尺寸公差表 ±0.2 HY-PRT_PG_04_237 MODEL：M28R1 CAN ICES-003(B)/NMB-003(B) IC: 29803-M28R1 S/N:XXXXXXXXXXX FCC ID: 2ADZC-M28R1 MADE IN CHINA 217-263219 MODEL：M28R1 CAN ICES-003(B)/NMB-003(B) IC: 29803-M28R1 S/N:XXXXXXXXXXX FCC ID: 2ADZC-M28R1 MADE IN CHINA 217-263219

Report No.: Ti-EE26040536-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 33 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Body-1 (2026-04-30) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen TEST REPORT Applicant: Shenzhen Hollyland Technology Co., Ltd. Address: 8F, Building 5D, Skyworth Innovation Valley, Tangtou Road, Shiyan Street, Baoan District, Shenzhen, 518055 China Equipment Type: Wireless Microphone Model Name: M28R1 Brand Name: FCC ID: 2ADZC-M28R1 Test Standard: FCC 47 CFR Part 2.1093 (refer to section 3.1) Maximum SAR: Body 2.4GHz(1 g@0mm): 1.13 W/kg Sample Arrival Date: May 08, 2026 Test Date: May 27, 2026 Date of Issue: Jun. 10, 2026 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Guo Guangwei Checked by: Xu Rui Approved by: Liao Jianming (Technical Director) _______________ _______________ _______________ Report No.: Ti-EE26040536-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 33 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Body-1 (2026-04-30) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen Revision History Version Issue Date Revisions Content Rev. 01 Jun. 10, 2026 Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION ........................................................................................................ 4 1.1 Test Laboratory ............................................................................................................ 4 1.2 Test Location ................................................................................................................ 4 1.3 Test Environment Condition .......................................................................................... 4 2 PRODUCT INFORMATION ....................................................................................................... 5 2.1 Applicant Information .................................................................................................... 5 2.2 Manufacturer Information .............................................................................................. 5 2.3 General Description for Equipment under Test (EUT) ................................................... 5 2.4 Ancillary Equipment ...................................................................................................... 5 2.5 Technical Information ................................................................................................... 6 2.6 Antenna Location Sketch .............................................................................................. 7 3 SUMMARY OF TEST RESULT ................................................................................................. 8 3.1 Test Standards ............................................................................................................. 8 3.2 Device Category and SAR Limit ................................................................................... 9 3.3 Test Result Summary ................................................................................................. 10 3.4 Test Uncertainty ......................................................................................................... 11 4 MEASUREMENT SYSTEM ..................................................................................................... 12 4.1 Specific Absorption Rate (SAR) Definition .................................................................. 12 4.2 DASY SAR System .................................................................................................... 13 5 SYSTEM VERIFICATION ........................................................................................................ 20 5.1 Purpose of System Check .......................................................................................... 20 5.2 System Check Setup .................................................................................................. 20 6 TEST POSITION CONFIGURATIONS .................................................................................... 21 6.1 USB DONGLE TRANSMITTERS Position Conditions ................................................ 21 Report No.: Ti-EE26040536-701 Tel: +86-755-66850100 E-mail: [email protected] Page No. 3 / 33 Web: www.titcgroup.com Template No.: TRP-FCC DASY-Body-1 (2026-04-30) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen 7 MEASUREMENT PROCEDURE ............................................................................................. 22 7.1 Measurement Process Diagram ................................................................................. 22 7.2 SAR Scan General Requirement ................................................................................ 23 7.3 Measurement Procedure ............................................................................................ 24 7.4 Area & Zoom Scan Procedure .................................................................................... 24 8 CONDUCTED RF OUTPUT POWER ...................................................................................... 25 9 TEST RESULT ........................................................................................................................ 26 9.1 2.4G ISM Band ........................................................................................................... 26 10 SAR Measurement Variability .................................................................................................. 27 11 SIMULTANEOUS TRANSMISSION ......................................................................................... 28 12 TEST EQUIPMENTS LIST ......................................…

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Report No.: Ti-EE26040536-AC 1 / 32 CALIBRATION REPORT F.1 E-Field Probe (EX3DV4 - SN:7664) Report No.: Ti-EE26040536-AC 2 / 32 Report No.: Ti-EE26040536-AC 3 / 32 Report No.: Ti-EE26040536-AC 4 / 32 Report No.: Ti-EE26040536-AC 5 / 32 Report No.: Ti-EE26040536-AC 6 / 32 Report No.: Ti-EE26040536-AC 7 / 32 Report No.: Ti-EE26040536-AC 8 / 32 Report No.: Ti-EE26040536-AC 9 / 32 Report No.: Ti-EE26040536-AC 10 / 32 Report No.: Ti-EE26040536-AC 11 / 32 Report No.: Ti-EE26040536-AC 12 / 32 Report No.: Ti-EE26040536-AC 13 / 32 Report No.: Ti-EE26040536-AC 14 / 32 Report No.: Ti-EE26040536-AC 15 / 32 Report No.: Ti-EE26040536-AC 16 / 32 Report No.: Ti-EE26040536-AC 17 / 32 Report No.: Ti-EE26040536-AC 18 / 32 Report No.: Ti-EE26040536-AC 19 / 32 Report No.: Ti-EE26040536-AC 20 / 32 Report No.: Ti-EE26040536-AC 21 / 32 Report No.: Ti-EE26040536-AC 22 / 32 Report No.: Ti-EE26040536-AC 23 / 32 F.2 Data Acquisition Electronics (DAE4 - SN:878) Report No.: Ti-EE26040536-AC 24 / 32 Report No.: Ti-EE26040536-AC 25 / 32 Report No.: Ti-EE26040536-AC 26 / 32 F.3 2450 MHz Dipole Report No.: Ti-EE26040536-AC 27 / 32 Report No.: Ti-EE26040536-AC 28 / 32 Report No.: Ti-EE26040536-AC 29 / 32 Report No.: Ti-EE26040536-AC 30 / 32 Report No.: Ti-EE26040536-AC 31 / 32 Report No.: Ti-EE26040536-AC 32 / 32 D2450V2 Dipole impedance and return loss Validation Meas. Results Current Meas. Previous Meas. Max. Deviation Meas. Data 2026.05.06 2025.05.06 / Return Loss(dB) -24.133 -27.271 -11.51% Impedance 51.716 Ω + 5.464 jΩ 51.780 Ω + 5.716 jΩ -0.252Ω (Imaginary part) --END OF REPORT--

8 CONDUCTED RF OUPUT POWER 8.1 2.4GHZ ISM Band Output Power Ti-EE26040536-AP 1/2 8.12.4G ISM Band Output Power test ModeModulation Channel number Fre. (MHz) output power(dBm) tune up power(dBm) SAR Test 2.4GHZ ISM Band 2M Low2402 9.65 10.00 Yes Mid24408.40 10.00 Yes High24808.93 10.00 Yes Ti-EE26040536-AP 2/2

Ti-EE26040536-ASC 1/1 SystemCheck:2450Mhz Date:2026.05.27 CommunicationSystemBand:D2450(2450.0MHz);Frequency:2450MHz;DutyCycle:1:1 Mediumparametersused(interpolated):f=2450MHz;σ=1.824S/m;ε r =38.757;ρ=1000kg/m 3 Phantomsection:FlatSection AmbientTemperature:22.5°CLiquidTemperature:21.7°C DASY5Configuration: Probe:EX3DV4-SN7664;ConvF(7.8,7.8,7.8);Calibrated:2025.06.30 Sensor-Surface:4mm(MechanicalSurfaceDetection) Electronics:DAE4Sn878;Calibrated:2026.03.23 Phantom:SAM1;Type:QD000P40CD;Serial:TP:1576 MeasurementSW:DASY52,Version52.8(8);SEMCADXVersion14.6.13(7331) CW2450100mw/AreaScan(81x81x1):Interpolatedgrid:dx=1.200mm,dy=1.200mm MaximumvalueofSAR(interpolated)=6.72W/kg CW2450100mw/ZoomScan(7x7x7)/Cube0:Measurementgrid:dx=5mm,dy=5mm,dz=5mm ReferenceValue=51.27V/m;PowerDrift=0.07dB PeakSAR(extrapolated)=10.8W/kg SAR(1g)=5.23W/kg;SAR(10g)=2.37W/kg Smallestdistancefrompeakstoallpoints3dBbelow=10.2mm RatioofSARatM2toSARatM1=53.5% MaximumvalueofSAR(measured)=6.42W/kg 0dB=6.42W/kg

Ti-EE26040536-ATD 1/1 Meas.1BodyPlanewithBackSide0mmonLowChannelin2.4GHzISMBandmodewithANT1 Date:2026.05.27 CommunicationSystemBand:BT;Frequency:2402MHz;DutyCycle:1:1.177 Mediumparametersused(interpolated):f=2402MHz;σ=1.723S/m;ε r =40.033;ρ=1000kg/m 3 Phantomsection:FlatSection AmbientTemperature:22.5°CLiquidTemperature:21.7°C DASY5Configuration: Probe:EX3DV4-SN7664;ConvF(7.8,7.8,7.8);Calibrated:2025.06.30 Sensor-Surface:4mm(MechanicalSurfaceDetection) Electronics:DAE4Sn878;Calibrated:2026.03.23 Phantom:SAM1;Type:QD000P40CD;Serial:TP:1576 MeasurementSW:DASY52,Version52.8(8);SEMCADXVersion14.6.13(7331) ChLow/AreaScan(41x41x1):Interpolatedgrid:dx=1.200mm,dy=1.200mm MaximumvalueofSAR(interpolated)=1.09W/kg ChLow/ZoomScan(7x7x7)/Cube0:Measurementgrid:dx=5mm,dy=5mm,dz=5mm ReferenceValue=22.24V/m;PowerDrift=0.08dB PeakSAR(extrapolated)=1.83W/kg SAR(1g)=0.883W/kg;SAR(10g)=0.384W/kg Smallestdistancefrompeakstoallpoints3dBbelow=9.8mm RatioofSARatM2toSARatM1=50.7% MaximumvalueofSAR(measured)=1.02W/kg 0dB=1.02W/kg

AntennaSampleDatasheet entryname： AntennaTyp A6118-RX e AntennaMateria Ceramic Antenna lPCB edition：A0 Date：2026.04.23 Antennamanufacturer:HongjiWirelessCommunication(Shenzhen)Co.,LTD http://www.honant.com.cn Address:12/F,WestBlockB,Building8,HuaqiangCreativeIndustryPark,SightseeingRoad, GuangmingDistrict,Shenzhen Contents 1：Antennatestequipment.............................1 2：Passivetestreport................................3 3：Structuraldrawing.................................5 4：Antennadiagram....................................6 1 1 ： Antennatestequipment Listofmeters：Agilent5071B； 1.1TheprinciplediagramoftheETSanochoic chamber Picture1.Antennastatictestconnectionmethod 2 1.2PicturesoftheETSanochoicchamber InsidetheETSanochoicchamber TestMachine 3 2 ： Passivetestreport 2.1：AntennaS11parameters 4 2.2：Passiveefficiencyofantenna 频点MHz增益(dBi)效率(dB) 2400-0.7733.5 2410-0.6834.88 2420-0.3737.08 24300.0237.75 24400.4239.38 24500.3542.05 24600.2941.54 24700.2842.71 24800.3543.28 2.3：PassivepatternofBTantenna 5 3 ： Structuraldrawing-right 6 4:Antennadiagram

Report No.: Ti-EE26040536-601 Tel: +86-755-66850100 E-mail: [email protected] Page No. 1 / 50 Web: www.titcgroup.com Template No.: TRP-FCC&ISED RSS 247 (2022-01-12) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen TEST REPORT Applicant: Shenzhen Hollyland Technology Co., Ltd. Address: 8F, Building 5D, Skyworth Innovation Valley, Tangtou Road, Shiyan Street, Baoan District, Shenzhen, 518055 China Equipment Type: Wireless Microphone Model Name: M28R1 Brand Name: FCC ID: 2ADZC-M28R1 ISED Number: 29803-M28R1 Test Standard: 47 CFR Part 15 Subpart C RSS-Gen Issue 5 RSS-247 Issue 4 (refer to section 3.1) Sample Arrival Date: Apr. 23, 2026 Test Date: Apr. 27, 2026 - May 27, 2026 Date of Issue: Jun. 10, 2026 ISSUED BY: Shenzhen BALUN Technology Co., Ltd. Tested by: Li Renyu Checked by: Li Ganming Approved by: Tolan Tu (Testing Director) _______________ _______________ _______________ Report No.: Ti-EE26040536-601 Tel: +86-755-66850100 E-mail: [email protected] Page No. 2 / 50 Web: www.titcgroup.com Template No.: TRP-FCC&ISED RSS 247 (2022-01-12) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen Revision History Version Issue Date Revisions Rev. 01 Jun. 10, 2026 Initial Issue TABLE OF CONTENTS 1 GENERAL INFORMATION ........................................................................................................ 4 1.1 Test Laboratory ............................................................................................................ 4 1.2 Test Location ................................................................................................................ 4 2 PRODUCT INFORMATION ....................................................................................................... 5 2.1 Applicant Information .................................................................................................... 5 2.2 Manufacturer Information .............................................................................................. 5 2.3 General Description for Equipment under Test (EUT) ................................................... 5 2.4 Technical Information ................................................................................................... 6 3 SUMMARY OF TEST RESULTS ............................................................................................... 7 3.1 Test Standards ............................................................................................................. 7 3.1 Verdict .......................................................................................................................... 8 4 GENERAL TEST CONFIGURATIONS ...................................................................................... 9 4.1 Test Environments ........................................................................................................ 9 4.2 Test Equipment List ...................................................................................................... 9 4.3 Test Software List ......................................................................................................... 9 4.4 Measurement Uncertainty ........................................................................................... 10 4.5 Description of Test Setup ........................................................................................... 10 4.6 Measurement Results Explanation Example ............................................................... 13 5 TEST ITEMS ........................................................................................................................... 14 5.1 Antenna Requirements ............................................................................................... 14 5.2 Output Power and E.I.R.P .......................................................................................... 15 5.3 Occupied Bandwidth ................................................................................................... 17 5.4 Conducted Spurious Emission .................................................................................... 18 5.5 Band Edge (Authorized-band band-edge) ................................................................... 20 Report No.: Ti-EE26040536-601 Tel: +86-755-66850100 E-mail: [email protected] Page No. 3 / 50 Web: www.titcgroup.com Template No.: TRP-FCC&ISED RSS 247 (2022-01-12) Add: 601, Building 2, Intelligent Connected Vehicle Industrial Park, No.55, Xiangshan Road, Luotian Community, Yanluo Sub-district, Bao'an District, Shenzhen 5.6 Conducted Emission ................................................................................................... 22 5.7 Radiated Spurious Emission ....................................................................................... 23 5.8 Band Edge (Restricted-band band-edge) .................................................................... 28 5.9 Power Spectral density (PSD) .................................................................................... 29 ANNEX A TEST RESULT ........................................................................................................... 30 A.1 Output Power and E.I.R.P .......................................................................................... 30 A.2 Occupied Bandwidth ................................................................................................... 32 A.3 Conducted Spurious Emissions .................................................................................. 34 A.4 Band Edge (Authorized-band band-edge) ................................................................... 37 A.5 Conducted Emissions ................................................................................................. 38 A.6 Radiated Spurious Emi…

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