2A8D5-BM-K101microphones

FCC Radiation Exposure Statement The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

SUICHENGLIMITED 2.911(d)(5)(i)EquipmentTypeAttestationv1.2 Section2.911(d)(5)(i)Certification–EquipmentType Companyname:SUICHENGLIMITED Address:Room38,11/F,MeecoIndustrialBuilding,53-55AuPuiWanStreet,Fotan,Shatin,N.T., HongKongHongKong ProductName:microphones FCCID:2A8D5-BM-K101 Model(s):BM-K10-1 2.911(d)(5)(i)EquipmentType We,SUICHENGLIMITED(“theapplicant”)certifythattheequipmentforwhichauthorizationis soughtthroughcertificationisnot:  Prohibitedfromreceivinganequipmentauthorizationpursuantto§2.903;oftheFCCrules.  Identifiedasanequipmenttypeinthe“CoveredList” NOTE1 Yourssincerely, Name:comyxiaoDate:2024.3.20 TitleandCompanyname:Manager/SUICHENGLIMITED NOTE1 “CoveredList”;istheListofEquipmentandServicesCoveredBySection2ofTheSecureNetworksAct,availableat https://www.fcc.gov/supplychain/coveredlist References; 1)986446D01CoveredEquipmentv01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2)FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

SUICHENGLIMITED 2.911(d)(5)(ii)ApplicantAttestationv1.3 Section2.911(d)(5)(ii)Certification–Applicant(CoveredList) Companyname:SUICHENGLIMITED Address:Room38,11/F,MeecoIndustrialBuilding,53-55AuPuiWanStreet,Fotan,Shatin,N.T., HongKongHongKong ProductName:microphones FCCID:2A8D5-BM-K101 Model(s):BM-K10-1 2.911(d)(5)(ii)Applicantfiling We,SUICHENGLIMITED(“theapplicant”)certifythat,asofthedateofthefilingoftheapplication, theapplicantisnotidentified NOTE1 onthe“CoveredList” NOTE2 ,establishedpursuantto§1.50002 ofthischapter,asanentityproducingcoveredcommunicationsequipment. Yourssincerely, Name:comyxiaoDate:2024.3.20 TitleandCompanyname:Manager/SUICHENGLIMITED NOTE1 Deleteoptionnotapplicabletothisapplication. NOTE2 “CoveredList”;istheListofEquipmentandServicesCoveredBySection2ofTheSecureNetworksAct,availableat https://www.fcc.gov/supplychain/coveredlist References; 1)986446D01CoveredEquipmentv01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2)FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

SUICHENGLIMITED 2.911(d)(7)USAAgentv1.4 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:SUICHENGLIMITED Address:Room38,11/F,MeecoIndustrialBuilding,53-55AuPuiWanStreet,Fotan, Shatin,N.T.,HongKongHongKong ProductName:microphones FCCID:2A8D5-BM-K101 Model(s):BM-K10-1 2.911(d)(7)USADesignatedAgentforServiceofProcess We,SUICHENGLIMITED(“theapplicant”)designate[StoneTradingLimited] NOTE1 for thepurposeofacceptingserviceofprocessonbehalfoftheapplicant. Applicantconsent:Weacknowledgeourconsenttoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherwethegranteehavepermanently terminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S., orattheconclusionofanyCommission-relatedadministrativeorjudicialproceeding involvingtheequipment,whicheverislater. Agentobligation:Weacknowledgeourobligationtoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipmentatourphysicalU.S. addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,orattheconclusionofanyCommission-relatedadministrativeor judicialproceedinginvolvingtheequipment,whicheverislater. USAAgent Companyname:StoneTradingLimited USAAddress:6547NAcademyBlvd #2266,ColoradoSprings,CO80918,United States FRNNumber：0033401936 ContactName:DongmeiFang TelephoneNo:+12134573118 Email:[email protected] Applicant Companyname:SUICHENGLIMITED Address:Room38,11/F,MeecoIndustrial Building,53-55AuPuiWanStreet,Fotan, Shatin,N.T.,HongKongHongKong GranteeFRNNumber:0032779001 FCCGranteeCode:2A8D5 ContactName:comyxiao TelephoneNo:19867757446 Email:[email protected] Signature: Title:manager Signature: Title:Manager Date:2024.3.20Date:2024.3.20 SUICHENGLIMITED 2.911(d)(7)USAAgentv1.4 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforservice ofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

SUICHENGLIMITED AgentAuthorization Company:SUICHENGLIMITED Address:Room38,11/F,MeecoIndustrialBuilding,53-55AuPuiWanStreet,Fotan, Shatin,N.T.,HongKongHongKong ProductName:microphones ModelNumber(s):BM-K10-1 ProductDescription:microphones WeauthorizeMiCOMLabsInc.,575BoulderCourt,Pleasanton,California94566,USA, toactonourbehalfonallmattersconcerningthecertificationofabovenamed equipment. WedeclarethatMiCOMLabsInc.isallowedtoforwardallinformationrelatedtothe approvalandcertificationofequipmenttotheregulatoryagenciesasrequiredandto discussanyissuesconcerningtheapprovalapplication.Anyandallactscarriedoutby MiCOMLabsonourbehalfshallhavethesameeffectasactsofourown. Signature:Date:2024.3.20 Name:comyxiao Title:Manager Company:SUICHENGLIMITED

SUICHENGLIMITED OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:2024.3.20 Subject;RequestforConfidentiality FCCID:2A8D5-BM-K101 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure 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:comyxiao Title:Manager

Labelandlabellocation FCCIDLABEL: High:1cm Wide:2cm LabelLocation: Microphones FCCID:2A8D5-BM-K101

EUTPHOTO(InternalPhotos) TestMode:BM-K10-1 ※※※※※ENDOFREPORT※※※※※ TXANT

FCCID:2A8D5-BM-K101 RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093, UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone 1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposure conditions,bymeasurementornumericalsimulation,isnotrequiredwhenthe correspondingSARTestExclusionThresholdcondition(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, ForBR/EDR Mode Frequency (MHz) Max Power(dBm) Max Power(mW) Min. distance(mm) Calc. thresholds limit GFSK24410.5521.1450.35623.0 π/4-DQPSK2441-0.5070.8950.27813.0 8-DPSK2441-0.3130.9350.29063.0 Conclusion: 1.[(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]*[√f(GHz)]<3.0. 2.SARTestExclusionThresholdsis3.0forseparationdistance5mm.Therefore,SAR testisnotrequired.

Summary Inverted F Antenna Specification ITEM Model Name2.4G ANT Center Frequency HorizontalVertical 2400MHz 2450MHz 2500MHz 2400MHz 2450MHz 2500MHz -1.26dBi-0.76dBi-0.58dBi -5.25dBi -2.46dBi -1.86dBi MAX. Gain-0.58dBi PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length38.20mm Manufacture Antenna Photo & Length (mm) Horizontal:2400MHz2450MHz2500MHz Power(dBm) Max:0Min:-40Scale:5/div Frequency (MHz) Gain(dBi) MaxMinAvg 2400-1.26-30.08-7.18 2450-0.76-36.56-7.48 2500-0.58-22.03-6.59 Vertical:2400MHz2450MHz2500MHz Power(dBm) Max:0Min:-30Scale:5/div Frequency (MHz) Gain(dBi) MaxMinAvg 2400-5.25-22.14-12.42 2450-2.46-24.58-10.47 2500-1.86-29.52-9.20 ANTTestLabs：ComplianceCo.,Ltd.

Project No.: ZKT-2403062231E Page 1 of 68 FCC TEST REPORT FCC ID:2A8D5-BM-K101 Report Number. .................................... : ZKT-2403062231E Date of Test ...................................................... : Mar. 07, 2024 to Mar. 14, 2024 Date of issue.........................................: Mar. 14, 2024 Total number of pages.........................68 Test Result .......................................... : PASS Testing Laboratory...........................: Shenzhen ZKT Technology Co., Ltd. Address ............................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Applicant's name ............................. :SUI CHENG LIMITED Address...............................................: Room 38, 11/F, Meeco Industrial Building, 53-55 Au Pui Wan Street, Fotan, Shatin, N.T., Hong Kong Manufacturer's name......................:SUI CHENG LIMITED Address...............................................: Room 38, 11/F, Meeco Industrial Building, 53-55 Au Pui Wan Street, Fotan, Shatin, N.T., Hong Kong Test specification: Standard ................................................ : FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2013 Test procedure ..................................... : / Non-standard test method................:N/A Test Report Form No........................: / Test Report Form(s) Originator ..... : ZKT Testing Master TRF ........................................ : Dated: 2020-01-06 This device described above has been tested by ZKT, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And itis applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of ZKT, this document may be altered or revised by ZKT, personal only, and shall be noted in the revision of the document. Product name.....................................:microphones Trademark ........................................... :BlitzMax Model/Type reference.........................: BM-K10-1 Ratings .................................................. : Input : 5V1A Battery : DC 3.7V, 500mAh, 1.85Wh Project No.: ZKT-2403062231E Page 2 of 68 Testing procedure and testing location: Testing Laboratory ....................................... : Shenzhen ZKT Technology Co., Ltd. Address............................................................:1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Jim Liu Tested by (name + signature) ....................... : Jackson Fang Reviewer (name + signature) ....................... : Lake Xie Approved (name + signature).......................: Project No.: ZKT-2403062231E Page 3 of 68 Table of Contents Page 1. VERSION..............................................................................................................5 2. TEST SUMMARY..................................................................................................6 2.1 TEST FACILITY...................................................................................................7 2.2 MEASUREMENT UNCERTAINTY...................................................................... 7 3.1 GENERAL DESCRIPTION OF EUT....................................................................8 3.2 Test Setup Configuration.....................................................................................9 3.3 Support Equipment..............................................................................................9 4. EMC EMISSION TEST........................................................................................13 4.1 Conducted emissions........................................................................................13 4.1.1 POWER LINE CONDUCTED EMISSION Limits............................................13 4.1.2 TEST PROCEDURE...................................................................................... 13 4.1.3 DEVIATION FROM TEST STANDARD..........................................................13 4.1.4 TEST SETUP................................................................................................. 14 4.1.5 EUT OPERATING CONDITIONS...................................................................14 4.1.6 Test Result..................................................................................................... 15 4.2 Radiated emissions...........................................................................................17 4.2.1 Radiated Emission Limits............................................................................... 17 4.2.2 TEST PROCEDURE...................................................................................... 17 4.2.3 DEVIATION FROM TEST STANDARD..........................................................18 4.2.4 TEST SETUP................................................................................................. 18 4.2.5 EUT OPERATING CONDITIONS...................................................................19 4.2.6 TEST RESULTS.............................................................................................19 5. RADIATED BAND EMISSION MEASUREMENT...............................................28 5.1 Test Requirement:.............................................................................................28 5.2 TEST PROCEDURE......................................................................................... 28 5.3 DEVIATION FROM TEST STANDARD.............................................................29 5.4 TEST SETUP.................................................................................................... 29 5.5 EUT OPERATING CONDITIONS......................................................................29 5.6 TEST RESULT...............................................................…

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EUTTESTPHOTO TestMode:BM-K10-1