2A8D5-V20VHF wireless microphone

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. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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. 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:VHFwirelessmicrophone FCCID:2A8D5-V20 Model(s):V20TU 2.911(d)(5)(i)EquipmentType We,SUICHENGLIMITED(“theapplicant”)certifythattheequipmentforwhichauthorizationis soughtthroughcertificationisnot:  Prohibitedfromreceivinganequipmentauthorizationpursuantto§2.903;oftheFCCrules.  Identifiedasanequipmenttypeinthe“CoveredList” NOTE1 Yourssincerely, Name:comyxiaoDate:2024.1.31 TitleandCompanyname:N/A/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:VHFwirelessmicrophone FCCID:2A8D5-V20 Model(s):V20TU 2.911(d)(5)(ii)Applicantfiling We,SUICHENGLIMITED(“theapplicant”)certifythat,asofthedateofthefilingoftheapplication, theapplicantisnotidentified NOTE1 onthe“CoveredList” NOTE2 ,establishedpursuantto§1.50002 ofthischapter,asanentityproducingcoveredcommunicationsequipment. Yourssincerely, Name:comyxiaoDate:2024.1.31 TitleandCompanyname:N/A/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:VHFwirelessmicrophone FCCID:2A8D5-V20 Model(s):V20TU 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:N/A Date:2024.1.31Date:2024.1.31 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:VHFwirelessmicrophone ModelNumber(s):V20TU ProductDescription:VHFwirelessmicrophone WeauthorizeMiCOMLabsInc.,575BoulderCourt,Pleasanton,California94566,USA, toactonourbehalfonallmattersconcerningthecertificationofabovenamed equipment. WedeclarethatMiCOMLabsInc.isallowedtoforwardallinformationrelatedtothe approvalandcertificationofequipmenttotheregulatoryagenciesasrequiredandto discussanyissuesconcerningtheapprovalapplication.Anyandallactscarriedoutby MiCOMLabsonourbehalfshallhavethesameeffectasactsofourown. Signature:Date:2024.1.31 Name:comyxiao Title:N/A Company:SUICHENGLIMITED

SUICHENGLIMITED OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:2024.1.31 Subject;RequestforConfidentiality FCCID:2A8D5-V20 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:N/A

EUT PHOTO(External Photos)

Label & label location 20mm*10mm VHF wireless microphone FCC ID:2A8D5-V20 V20 TU Label location

EUT PHOTO(Internal Photos) ANT ※※※※※※※※※※ END OF REPORT

FCC ID:2A8D5-V20 RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1093， Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f (GHz) ] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where f (GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison Here, Max Power(dBm) Max Power(mW) Frequency(MHz)Min. distance(mm)Calc. thresholdslimit -1.098 0.78 658.8 5 0.12599 3.0 So a SAR test is not required

ANTENNA SPECIFICATION 一、Specification 主要技术参数 Main technical parameter 频率范围 650-660MHz Frequency Range 650-660MHz 型号 V20 Model V20 增益 0dBi Gain 0dBi 调制方式 FM Modulation FM 功率 0mW Admitted Power 0mW 方向性 全向性 Radiation Omni-directional 天线类型 Monopole Antenna Antenna plate Monopole Antenna 二、Size drawing 三、Test Report Radiation [email protected]

Project No.: ZKT-2401221077E Page 1 of 30 FCC TEST REPORT FCC ID:2A8D5-V20 Report Number. .............................. : ZKT-2401221077E Date of Test ........................................ Jan. 22, 2024 to Jan. 30, 2024 Date of issue .................................... : Jan. 30, 2024 Total number of pages ...................... 30 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 15.236 ANSI C63.10:2013 Test procedure ................................. : / Non-standard test method ............. : N/A Test Report Form No. .................... : TRF-EL-108_V0 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 it is 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 ................................. : VHF wireless microphone Trademark ...................................... : N/A Model/Type reference ...................... : V20 TU Ratings ............................................. : DC 3V Battery Project No.: ZKT-2401221077E Page 2 of 30 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-2401221077E Page 3 of 30 Table of Contents Page 1. VERSION 5 2. SUMMARY OF TEST RESULTS 6 2.1 TEST FACILITY 7 2.2 MEASUREMENT UNCERTAINTY 7 3. GENERAL INFORMATION 8 3.1 GENERAL DESCRIPTION OF EUT 8 3.2 DESCRIPTION OF TEST MODES 9 3.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 9 3.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 9 3.5 EQUIPMENTS LIST FOR ALL TEST ITEMS 10 4. EMC EMISSION TEST 12 4.1 CONDUCTED EMISSION MEASUREMENT 12 4.1.1 POWER LINE CONDUCTED EMISSION LIMITS 12 4.1.2 TEST PROCEDURE 13 4.1.3 DEVIATION FROM TEST STANDARD 13 4.1.4 TEST SETUP 13 4.1.5 EUT OPERATING CONDITIONS 13 4.1.6 TEST RESULTS 13 4.2.1 RADIATED EMISSION LIMITS 14 4.2.3 TEST SETUP 15 4.2.4 TEST PROCEDURE 16 4.2.5 TEST RESULTS 16 5. CONDUCTED OUTPUT POWER 21 5.1 APPLIED PROCEDURES / LIMIT 21 5.2 TEST PROCEDURE 21 5.3 DEVIATION FROM STANDARD 21 5.4 TEST SETUP 21 5.5 EUT OPERATION CONDITIONS 21 5.6 TEST RESULTS 22 6. CHANNEL BANDWIDTH 23 7. NECESSARY BANDWIDTH 25 7.1 LIMIT 25 7.2 TEST SETUP 25 7.3 TEST PROCEDURE 26 7.4 TEST RESULTS 26 8. FREQUENCY STABILITY 28 Project No.: ZKT-2401221077E Page 4 of 30 Table of Contents Page 9. ANTENNA REQUIREMENT 29 10. TEST SETUP PHOTO 30 11. EUT CONSTRUCTIONAL DETAILS 30 Project No.: ZKT-2401221077E Page 5 of 30 1. VERSION Report No. Version Description Approved ZKT-2401221077E Rev.01 Initial issue of report Jan. 30, 2024 Project No.: ZKT-2401221077E Page 6 of 30 2. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.236) , Subpart C Standard Section Test Item Judgment Remark 15.203 Antenna Requirement PASS 15.207 Conducted Emission N/A 15.236(d)(1) Conducted Peak Output Power PASS 15.236(g) Radiated Spurious Emission Measurement PASS 15.236(g) Spurious Emission at Antenna Port PASS 15.236(f)(2) Occupied Bandwidth Emission PASS 15.236(f)(3) Frequency Stability PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report Project No.: ZKT-2401221077E Page 7 of 30 2.1 TEST FACILITY Shenzhen ZKT Technology Co., Ltd. Add. : 1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China FCC Test Firm Registration Number: 692225 Designation Number: CN1299 IC Registered No.: 27033 2.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U，where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %。 No. Item Uncertainty 1 AC Conduted Emission Test ±1.38dB 2 3m camber Radiated spurious emission(9KHz-30MHz) U=4.5dB 3 3m camber Radiated spurious emission(30MHz-1GHz) U=4.8dB 4 3m chamber Radiated spurious emission(1GHz-18GHz) U=4.9dB 5 3m chamber Radiated spurious emission(18GHz-40GHz) U=5.0dB 6 Conducted Adjacent channel power U=1.38dB 7 Conducted output power uncertainty Above 1G U=1.576dB 8 Conducted output power uncertainty below 1G U=1.28dB 9 humidity uncertainty U=5.3% 10 Temperature uncertainty U=0.59°C Project No.: ZKT-2401221077E Page 8 of 30 3. GENERAL INFORMATION 3.1 GENERAL DESCRIPTION OF EUT Equipment VHF wireless microphone Trade Name N/A Model Name V20 TU Serial Model N/A Model Difference N/A Hardware version V1.0 Software version V1.0 Operation Frequency: 658.8MHz Modul…

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EUT TEST PHOTO