2BDW5-US-9031Wireless microphone

System index Frequency range: 530-580MHz Modulation system: broadband FM Frequency stability: w ithin 0.005% Dynamic range: 1 OOdB Maximum fre quency deviation: 45KHz Audio frequency reponse: 80Hz-18KHz (3dB) Comprehensive signal-to-noise ratio: >105dB Comprehensive distortion: :,(0.5% ° ° Opera ting temperature:-10 C--+40 C Receiver index Receiver system: double conversion supersonic heterodyne Frequency of intermediate frequency: the first intermediate frequency: 110MHz, the second intermediate frequency: 10.7MHz Wireless interface: BNC/50 Q Sensitivity: 12dB V (80dBS/N) Sensitivity adjustment range: 12-32 dB V Spur suppression: ?75dB Maximum output level:+1 OdBV Emitter index Antenna program: wearable emitter adopts 1/4 wave length whip antenna. Handled microphone has built-in spiral antenna. Output frequency: high frequency 30mW, low frequency 3mW Spur suppression:-60dB Power supply: two AA batteries Service time: if it is 30mW, the time is more than 10 hours if it is 3mW, the time is more than 15 hours 12 来Precautions ■For machine's better performance, please read these instructions care fully before use and learn about correct operation methods. 来Safety .& As a safety precaution, during connection, please do not seize the cable for pulling. Instead, you should grasp the plug without hurting power line to ensure safe operation . .& Only the power adapter which offered by native machine can be used, and also make sure that the power voltage coincide with power adapter. It may damage the machine if you use the power adapter supplied by other suppliers . .& This machine uses 220VAC power voltage. Other voltage will cause fire and malfunction . .&Do not place the machine in high temperature, wet and dusty places and approach liquid substance in case of malfunction . .& Do not colide, cast and vibrate the machine in case of damage . .&Do not open, touch and change the acceptor, emitter and power adapter. Because there are nothing can be change by user. The malfunction of the machine only can be fixed by the authorised repair centre . .&During use, any abnormal things are found, such as smoke and smells, please pull out the power adapter im mediately and send the product to the authorised repair centre for repairing . .&During battery installation, do not insert the battery in opposite and reverse way. If you don't use the machine for long time, please pull out the battery from emitter . .& Do not use the battery with damaged shell of insulating materials in case of short circuit . .&If you leave the working machine for long time, please turn off and pull out the power adapter. 来Productfeatures *We use ulrta high frequency (UHF) which has less interference than VHF frequency band. Also it is more reliable in transmission. * DPLL digital phase lock loop multi channel frequency synthesis te chnology which within 500Hz bandwidth and 250KHz channel spacing, offering as much as 200 channel options which is convenient for serval machines working simultaneously and easy to avoid various interferences. *Even if the frequency between emitter and receiver is wrong, automatic frequency technology can let the emitter begin automatic track lock and adjust itself to be consistent with the receiver frequency. * We design a high and low power switching function especially, which offers fluent performance in assembly (high frequency emission). 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 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 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. Warning: changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment The devices has been evaluated to meet general RF exposure requirement the device can be used in portable exposure condition without restriction

C5266091_X24_Ed.2 1/1 Enping Tengyue electronic technology Co., LTD “Attestation Statements” TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Enping Tengyue electronic technology Co., LTD Grantee code: 2BDW5 FCC ID: 2BDW5-US-9031 Contact Name: Ye Nai Fei Address: Fourth floor, No. 76, Yijing residential area, Dasongling, Enping City Telephone No: 15039088731 Fax No: Email: [email protected] i. [Enping Tengyue electronic technology Co., LTD] (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. The applicant must sign this certification. ii. [Enping Tengyue electronic technology Co., LTD] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. [Enping Tengyue electronic technology Co., LTD] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] identified on the Covered List as an entity producing “covered”equipment . Date: 2023/12/13 Applicant’s Name: Ye Nai Fei Title: Manager Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

Modeldifferencedeclarationletter DifferencesDescription FCCID：2BDW5-US-9031 WeEnpingTengyueelectronictechnologyCo.,LTDstate: Product： Wirelessmicrophone ModelName ： US-9031,BS-883,SH-900,M4,K1,F4,F7,G98X,E-28 ,ML380,PH400 We(EnpingTengyueelectronictechnologyCo.,LTD)herebystatethatallthemodelsare electricalidenticalincludingthesamesoftwareparameterandhardwaredesign(i.e.,circuit design,PCBLayout,RFmodule/circuit,antennatype(s)andantennalocation,components onPCB,etc.,),samemechanicalstructureanddesign(includingproductenclosure, materials,etc.,),theonlydifferenceisthemodelnameandappearancecolor. Signatory Date:12-09.2023 Name:YeNaiFeiDate:Dec09.2023 Title:Manager Signatureofapplicant:

C5266091_X8_Ed.1 1/1 Letter of Authorization Enping Tengyue electronic technology Co., LTD Company: Enping Tengyue electronic technology Co., LTD Address: Fourth floor, No. 76, Yijing residential area, Dasongling, Enping City Product Name: Wireless microphone Model Number: US-9031, BS-883, SH-900, M4, K1, F4, F7, G98X, E-28, ML380, PH400 FCC Identifier: 2BDW5-US-9031 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Ye Nai Fei Date: 2023.12.13 Title: Manager Signature of applicant:

C5266091_X10_Ed.2 1/1 Enping Tengyue electronic technology Co., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2023-12-13 Subject: Request for Confidentiality FCC ID: 2BDW5-US-9031 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name: Ye Nai Fei Title: Manager 2023.12.13

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LabelandLabelLocation FCCID:2BDW5-US-9031

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FCCRFExposure EUTDescription:Wirelessmicrophone ModelNo.:US-9031 SeriesModel:BS-883,SH-900,M4,K1,F4,F7,G98X,E-28,ML380,PH400 FCCID:2BDW5-US-9031 Equipmenttype:PortableDevice 1.TestProcedure AccordingtoKDB447498D01GeneralRFExposureGuidancev06 The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/ (min.testseparationdistance,mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-g extremity SAR, where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Thetestexclusionsareapplicableonlywhentheminimumtestseparation distanceis≤50mmandfortransmissionfrequenciesbetween100MHzand6GHz.When theminimumtestseparationdistanceis<5mm,adistanceof5mmisappliedtodetermine SARtestexclusion. 2.TestResultofRFExposureEvaluation CH/Frequency Outputpower（dBm/mW） Channel01 530.10MHz 5.58/3.614 Turn-uppower Mode Peakpowerrange(dBm) wirelessmicrophone 5.00-7.00 [530.10MHz,7dBm/5.011mW)outputpower] (5.011mW/5mm)*[√0.5301(GHz)]=0.7297<3.0for1-gSAR Conclusion:NoSARisrequired

Fuzhou Jielei Electronic Technology Co., Ltd. Fuzhou JieLei Electronic Technology Co.,Ltd. Document encoding:FRKF-0007Version:1.1 Specifications Specification client's name: CUSTOMER: Customer part number: CUSTOMER P/N: Fuzhou Jinweihang Information Technology Co., Ltd. Customer Product Name: DESCRIPTION: JieLei material number: P/N: Jie Lei product name: PART NO： spring antenna;V1.0 approvereviewprepared by FrankWenSenSean 2019.07.292019.07.292019.07.29 © 2019-2020 Fu Zhou Jie Lei Corporation. All rights reserved. All content, materials, and programs in this document, including all code, text, graphics, and logos, unless otherwise noted, are the property of Jie Lei Corporation and cannot be reproduced or transmitted in any form or by any means, electronic or mechanical , for any purpose, without the express written permission of Jie Lei Corporation. Jie Lei Corporation may have patents or pending patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. The furnishing of this document does not give you any license to these patents, trademarks, copyrights, or other intellectual property rights except expressly provided in any written license agreement from Jie Lei. 1 Translated from Chinese (Simplified) to English - www.onlinedoctranslator.com Fuzhou Jielei Electronic Technology Co., Ltd. Fuzhou JieLei Electronic Technology Co.,Ltd. Document encoding:FRKF-0007Version:1.1 Table of contents 1. Electrical Performance................................................ ................................................................. ........3 2. Measurement Setup................................................ ................................................................. .............4 2.1 Test equipment................................................ ................................................................. ................................................................. .............5 3. Mechanical Dimension Drawing................................................ ....................................6 Version description dateapproveVersiondescribe 2019-07-29 V1.0first edition 2 Fuzhou Jielei Electronic Technology Co., Ltd. Fuzhou JieLei Electronic Technology Co.,Ltd. Document encoding:FRKF-0007Version:1.1 1. Electrical Performance A.Electrical Characteristics S.W.R.＜2.0@530-580MHz Frequency Range(MHz)530-580MHz Impedance50 Ohms GainMAX:-2.32dBi@530-580MHz B.Material Phosphor bronze nickel plating C.Environmental Operation Temperature- 20°C~65°C Storage Temperature 3 Fuzhou Jielei Electronic Technology Co., Ltd. Fuzhou JieLei Electronic Technology Co.,Ltd. Document encoding:FRKF-0007Version:1.1 2. Measurement Setup (1)Reflection coefficient Measurement: (a)Instrument:Network Analyzer (b)Setup: (I)Calibrate the Network Analyzer by one port calibration using Agilent calibration kits. (II)Connect the antenna under test to the Network Analyzer (III)Measure the S11 (reflection coefficient) shown in Fig.1 Fig.1 Measure S11 on Network Analyze 4 Fuzhou Jielei Electronic Technology Co., Ltd. Fuzhou JieLei Electronic Technology Co.,Ltd. Document encoding:FRKF-0007Version:1.1 530MHz Max: 5 Min: -30 Scale: 5/div unit:dBi 580MHzÿÿ Max: 5 Min: -30 Scale: 5/div ÿ ÿ ÿ unit:dBi ÿ 5 Fuzhou Jielei Electronic Technology Co., Ltd. Fuzhou JieLei Electronic Technology Co.,Ltd. Document encoding:FRKF-0007Version:1.1 3. Mechanical Dimension Drawing 6

FCCTestReport ReportNo:FCS202310156W01 Issuedfor Applicant: EnpingTengyueelectronictechnologyCo.,LTD Address: Fourthfloor,No.76,Yijingresidentialarea,Dasongling,Enping City ProductName: Wirelessmicrophone BrandName: KASCHUN ModelName: US-9031 SeriesModel: BS-883,SH-900,M4,K1,F4,F7,G98X,E-28,ML380,PH400 FCCID: 2BDW5-US-9031 IssuedBy:FluxComplianceServiceLaboratory Add:Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-Tech Industrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.fcs-lab.com Page2of32ReportNo.:FCS202310156W01 FluxComplianceServiceLaboratory Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-TechIndustrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.fcs-lab.com TESTRESULTCERTIFICATION Applicant’sName ...................... :EnpingTengyueelectronictechnologyCo.,LTD Address ...................................... : Fourthfloor,No.76,Yijingresidentialarea,Dasongling,Enping City Manufacture'sName................:EnpingTengyueelectronictechnologyCo.,LTD Address ...................................... : Fourthfloor,No.76,Yijingresidentialarea,Dasongling,Enping City ProductDescription ProductName ........................... :Wirelessmicrophone BrandName.............................:KASCHUN ModelName..............................:US-9031 SeriesModel .............................. :BS-883,SH-900,M4,K1,F4,F7,G98X,E-28,ML380,PH400 TestStandards..........................:FCCRulesandRegulationsPart15SubpartCsection15.236 TestProcedure .......................... :ANSIC63.10:2013 ThisdevicedescribedabovehasbeentestedFCS,thetestresultsshowthattheequipmentundertest (EUT)isincompliancewiththeFCCrequirements.Anditisapplicableonlytothetestedsample identifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofFCS,thisdocument maybealteredorrevisedbyFCS,personalonly,andshallbenotedintherevisionofthedocument.. DateofTest..................................: Date(s)ofperformanceoftests.:Oct16,2023~Nov30,2023 DateofIssue.................................:Nov30,2023 TestResult....................................:Pass Testedby: (ScottShen) Reviewedby : (DukeQian) Approvedby: (JackWang) Page3of32ReportNo.:FCS202310156W01 FluxComplianceServiceLaboratory Room105FloorBaohaoTechnologyBuilding1NO.15GongyeWestRoadHi-TechIndustrial,SongshanlakeDongguan Tel:769-27280901Fax:769-27280901http://www.fcs-lab.com TableofContents Page 1.SUMMARYOFTESTRESULTS...........................................................................................6 1.1TESTFACTORY............................................................................................................7 1.2MEASUREMENTUNCERTAINTY.................................................................................7 2.GENERALINFORMATION...................................................................................................8 2.1GENERALDESCRIPTIONOFTHEEUT.......................................................................8 2.2DESCRIPTIONOFTHETESTMODES.......................................................................10 2.3DESCRIPTIONOFNECESSARYACCESSORIESANDSUPPORTUNITS...............11 2.4EQUIPMENTSLIST.....................................................................................................12 3.CONDUCTEDEMISSIONMEASUREMENT.......................................................................13 3.2TESTPROCEDURE.....................................................................................................13 3.3TESTSETUP...............................................................................................................14 3.4TESTRESULTS...........................................................................................................15 4MAXIMUMRADIATEDPOWER..........................................................................................16 4.1LIMIT............................................................................................................................16 4.2TESTPROCEDURE.....................................................................................................16 3.3TESTSETUP...............................................................................................................16 4.4TESTRESULTS...........................................................................................................16 5.OCCUPIEDBANDWIDTH...................................................................................................17 5.1LIMIT.................................................................................................................................17 5.2TESTPROCEDURE.....................................................................................................17 5.3TESTSETUP...............................................................................................................17 5.4TESTRESULTS...........................................................................................................18 6.NECESSARYBANDWITH...................................................................................................19 6.1LIMIT............................................................................................................................19 6.2TESTPROCEDURE.....................................................................................................19 6.3TESTSETUP...............................................................................................................19 6.4TESTRESULT.............................................................................................................20 7.TRANSMITTERUNWANTEDEMISSIONS.........................................................................21 7.1LIMIT............................................................................................................................21 7.2TESTPROCEDURE.....................................................................................................2…

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Page 1 of1ReportNo.:FCS202306057 Blow1GHzforradiatedemissiontestsetup Above1GHzforradiatedemissiontestsetup