2BVBD-MLC351AI audio recorder

FCC Caution 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.

1/1 USAgentforServiceofProcessLETTEROFATTESTATION TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USAgentforServiceofProcess: CompanyName:AOGESCO.,LIMITED FRN:0033947847 ContactName:XIAOYANLAl Address:1624MarketSt,Ste226,#30327DenverCO,80202USA TelephoneNo:3036231940 Email:[email protected] Applicant: Companyname:MininglampSoftwareSystemCo.,Ltd. ProductDescription:AIaudiorecorder Granteecode:2BVBD FCCID:2BVBD-MLC351 FRN:0038182127 ContactName:ZhiJianzhuang Address:RoomA1002,10thFloor,Building1,No.1ZhongguancunEastRoad,Haidian District,Beijing,China TelephoneNo:010-64303888 Email:[email protected] [MininglampSoftwareSystemCo.,Ltd.]certifiesthat,asofthedateofthisfiling oftheapplicationwiththeTCB,[AOGESCO.,LIMITED]isourdesignatedUS agentforserviceofprocessfortheabovereferencedFCCID.[Mininglamp SoftwareSystemCo.,Ltd.]acceptstomaintainanagentfornolessthanone yearafterthegranteehasterminatedallmarketingandimportationorthe conclusionofanycommissionrelatedproceedinginvolvingequipment.[AOGES CO.,LIMITED]accepts,asofthedateofthefilingoftheapplication,the obligationofthedesignatedUSagentforserviceofprocessfortheabove referenceFCCID. TheUSAgentforServiceofProcessisawareofandagreestocomplywiththerequirements outlinedintheFCCEquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause §2.911. TheApplicantisawareofandagreestocomplywiththerequirementsoutlinedintheFCC EquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause§2.911. Date:2026/05/20 Applicant’sName:ZhiJianzhuangUSAgent’sName:XIAOYANLAl Title:ManagerTitle:GeneralManager SignatureSignature 1/1

AttestationStatement. OldCode:C526609124NewCode:00015544Ed.3 Changereason:FRNisaddedtotheApplicantinformationsection. 1/1 MininglampSoftwareSystemCo.,Ltd. TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 TheCommissionadoptedrulesthatprohibitequipmentauthorizationfor“covered” telecommunicationsequipmentandvideosurveillanceequipmentproducedbyentitiesidentified ontheCommission’sCoveredList 1 ,whichisperiodicallyupdated.SeetheCoveredListformore details.ThisAttestationStatementistoconfirmthatwefollowtheSection2.911(d)(5)(i)-(ii) Applicant Companyname:MininglampSoftwareSystemCo.,Ltd. Granteecode:2BVBD FCCID:2BVBD-MLC351 FRN:0038182127 ContactName:ZhiJianzhuang Address:RoomA1002,10thFloor,Building1,No.1ZhongguancunEastRoad,Haidian District,Beijing,China TelephoneNo:010-64303888 FaxNo: Email:[email protected] i.[MininglampSoftwareSystemCo.,Ltd.](“theapplicant”)certifiesthatthe equipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903oftheFCCrules.Theapplicantmustsignthiscertification. ii.[MininglampSoftwareSystemCo.,Ltd.](“theapplicant”)certifiesthat,asof thedateofthefilingoftheapplication,theapplicant[isnot](asaspecifically namedentityoranyofitssubsidiariesoraffiliates)identifiedontheCovered Listasanentityproducing“covered”equipment.Theapplicantmustsign thiscertification. [MininglampSoftwareSystemCo.,Ltd.](“theapplicant”)certifiesthat,asofthe dateofthefilingoftheapplication,theapplicant[isnot]identifiedontheCovered Listasanentityproducing“covered”equipment. Date:2026/05/20 Applicant’sName:ZhiJianzhuang Title:Manager Signature: 1 TheCommission’sCoveredListispublishedbythePublicSafetyandHomelandSecurityBureauandpostedonthe Commission’swebsite.ThisCoveredList,whichisperiodicallyupdated,identifiesparticularequipment,producedby particularentities,thatconstitutes“covered”equipment.https://www.fcc.gov/supplychain/coveredlist

MininglampSoftwareSystemCo.,Ltd. Code00018768Ed.1 Item1.Thedeviceisabletoinstallsoftware/programinstallation? ☐ Yes,gotoItem2. ☒ No.Inthiscase,therestoftheitemsdonotapply.ThedevicecannotsupportinstallationofKaspersky cybersecurityoranti-virussoftware. Item2.TechnicalRequirementsforKasperskyCybersecuritySoftware: #GeneralRequirements(ForallDevices)Yes/NoorN/AComments 1Internetconnectionforactivationandupdates(ForallOperating Systems) N/A DeviceAIaudiorecorder CompanynameMininglampSoftwareSystemCo.,Ltd. Granteecode2BVBD FCCID2BVBD-MLC351 FRN0038182127 ContactnameZhiJianzhuang AddressRoomA1002,10thFloor,Building1,No.1 ZhongguancunEastRoad,Haidian District,Beijing,China Telephonenumber010-64303888 [email protected] Chipset/moduleinformationBT:AC7018F WiFi2.4G：ESP8684 OperatingSystem(ifapplicable)N/A StorageCapacity(harddriveorother permanentmemorystorage,ifapplicable) N/A 2 #GeneralRequirements(ForWindowsDevices)Yes/NoorN/AComments 1Storage:1500MBfreespaceontheharddriveN/A 2OperatingSystem: MicrosoftWindows8,8.1,10&11Home/Pro/Enterprise Microsoft Windows7Starter/HomeBasic&Premium/Professional/ UltimateSP1orhigher N/A 3Processor:1GHzorhigher(x86orx64)N/A 4Memory(RAM)1GB(32-bit)or2GB(64-bit)N/A 5ScreenResolution:Minimumresolutionof1024x768N/A #GeneralRequirements(FormacOSdevices)Yes/NoorN/AComments 1OperatingSystemmacOS®13–14N/A 2Memory(RAM)4GBN/A 3Storage:3455MBfreespaceontheharddriveN/A #GeneralRequirements(ForAndroidDevices)Yes/NoorN/AComments 1Storage:150MBfreespaceN/A 2OperatingSystem:Android™10–14N/A 3ScreenResolution:Minimumresolutionof320x480N/A #GeneralRequirements(foriOSdevices)Yes/NoorN/AComments 1Storage:150MBfreespaceN/A 2OperatingSystem:iOS®17N/A #GeneralRequirements(ForLinuxsystem)Yes/NoorN/AComments 3 1Harddrive:1GBoffreespaceN/A 2CPU:IntelPentium1GHzorhigherN/A 3RAM:1GBN/A 4Minimumsoftwarerequirements: AlmaLinuxOS8orlater; AlterOS7.5orlater; AstraLinuxCommonEdition2.12orlater; CentOS6.7orlater; DebianGNU/Linux10.0orlater; EulerOS2.0orlater; OracleLinux7.3orlater; RedHatEnterpriseLinux6.7orlater; RockyLinux8.5orlater; SUSELinuxEnterpriseServer12.5orlater; Ubuntu12.04orlater; UncomOSHome/Business/Education/Enterprise2.2orlater; ALTLinuxWorkstaton/WorkstationK/Server/Education8or later; ROSALinuxWorkstation/Server12orlater; REDOS7.3andlater; N/A Afterreviewedthetechnicalrequirements,isthedevicecapableofsupportingtheinstallationof Kasperskysoftware? ☐ Yes,gotoItem3. ☒No.Inthiscase,therestoftheitemsdonotapply.ThedevicecannotsupportinstallationofKaspersky software Item3.ConnectivityCapabilities: 4 #PhysicalInterfacePurposeJustification 1 1 #WirelessInterfacePurposeJustification 1 1 Afterthereviewofthisitems,thedevice: ☒Cannotsupportinstallationofanycybersecurityoranti-virussoftwareonthecoveredlist. ☐ Potentiallycanoperatewithanycybersecurityoranti-virussoftwareonthecoveredlist–additionalthird- partyproofisprovidedtodemonstratecompliancewithrequirementsasof2.911(d)5(i),(ii)–“Proofof CompliancewithCoveredListSoftwareRequirements”ofthisdocumentapplies ignature:Name:ZhiJianzhuang Date:2026-05-20 1 Thejustificationfieldisusedtojustifywhythesoftwarecannotbereceivedthroughthatinterface.Checktheannexformore indications.

TCBCALLpágina1 FileFCCID:2BVBD-MLC351 PleaseuploadanexhibitthatexplainshowdoestheTCBverifythenewagentinformation: 1-IstheaddressoftheagentavalidphysicalUSmailingaddress(notaUSpostofficebox,notavirtualmailbox,notP.O.Boxes,notavacantlot,notapublicbuilding, etc.) ○Wehavecheckediftheaddressexistsinarealandpotentialbuilding(Googlemaps)+officialUSregister,afterthisverificationandtheevidencebelowwecan guaranteethefollowing: notaUSpostofficebox notavirtualmailbox notP.O.Boxes notavacantlot notapublicbuilding(note) ►WecheckedtheFCCFRNSearchbasedontheinformationprovidedbythegrantee. Ontheofficialregisterfrom:https://mt.usembassy.gov/determining-if-a-company-is-registered-in-the-u-s/ Ingoogle: TCBCALLpágina2 TCBCALLpágina3 TCBCALLpágina4 TCBCALLpágina5 TCBCALLpágina6 TCBCALLpágina7 TCBCALLpágina8 ►CONCLUSIONbyTCB:TheASOPdefinedandprovidedbygranteeisVALIDandconfirmed.Thereforetheexhibit"C5266091_X23_Ed1_US_Agent_Letter" includedinthefileisok. 2-IstheagentphysicallylocatedatthatvalidUSaddresssuchthattheagentcanbelegallyservedatthataddress? Yes,checkabove 3-Hasthelistedagentclearlyagreedinwritingtoserveastheagentforthegranteeatthataddress? Yes,itisincludedintheexhibit"C5266091_X23_Ed1_US_Agent_Letter" >

C5266091_X10_Ed.2 1/1 MininglampSoftwareSystemCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date:2026.05.20 Subject:RequestforConfidentiality FCCID:2BVBD-MLC351 ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-Term Confidentiality NOTE2 IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNo ☐ BlockDiagram ☒☐ Schematics ☒☐ TestReportNoNo TestSetupPhotosNo ☐ User’sManual ☐ NOTE 1 ☐ InternalPhotos ☐ NOTE 1 ☐ PartsList/TuneUp ☐☐ RFExposureInfoNoNo OperationalDescription ☒☐ CoverLetter(s)NoNo SDRSoftware/SecurityInfo ☐ No NOTE1:Long-TermConfidentialitymaybepermittedunderspecialconditions(SeeII.LONG-TERMCONFIDENTIALITY,Section3of KDB726920,uselastinforce) NOTE2:Short-TermConfidentialitycanberequestedforamaximumof180daysfromthedateofthegrant. Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Incaseofshort-termConfidentiality,theapplicantrequeststheexhibitsselected abovearewithheldfrompublicviewforaperiodof______daysfromthedateofthe GrantofEquipmentAuthorizationandpriortomarketing. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. Sincerely, C5266091_X10_Ed.2 1/1 Signature: Name:ZhiJianzhuang Title:Manager 2026.05.20

C5266091_X8_Ed.1 1/1 LetterofAuthorization MininglampSoftwareSystemCo.,Ltd. Company:MininglampSoftwareSystemCo.,Ltd. Address:RoomA1002,10thFloor,Building1,No.1ZhongguancunEast Road,HaidianDistrict,Beijing,China ProductName:AIaudiorecorder ModelNumber:MLC351 FCCIdentifier:2BVBD-MLC351 WeauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdelCarme,s/n, 08193Bellaterra,Spain,toactonourbehalfonallmattersconcerningthe abovenamedequipment. AnyindividualwithinLGAITechnologicalCenterS.A.isauthorizedtoactonour behalfandtakeactionontheapplication. WedeclarethatauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdel Carme,s/n,08193Bellaterra,Spain,isallowedtoforwardallinformation relatedtotheapprovalprojecttotheFederalCommunicationCommissionand todiscussanyissuesconcerningtheapprovalapplication.Anyandallacts carriedoutbyLGAITechnologicalCenterS.A.onourbehalfshallhavethe sameeffectasactsofourown. Name:ZhiJianzhuangDate:2026.05.20 Title:Manager Signatureofapplicant:

Page 1 of 4 ReportNo.:STS2603143 APPENDIX-PHOTOGRAPHSOFEUTCONSTRUCTIONALDETAILS Photo1 Photo2 Page 2 of 4 ReportNo.:STS2603143 Photo3 Photo4 Page 3 of 4 ReportNo.:STS2603143 Photo5 Photo6 Page 4 of 4 ReportNo.:STS2603143 Photo7 Photo8

Page 1 of 4 ReportNo.:STS2603143 APPENDIX-PHOTOGRAPHSOFEUTCONSTRUCTIONALDETAILS Photo1 Photo2 Antenna Page 2 of 4 ReportNo.:STS2603143 Photo3 Photo4 Page 3 of 4 ReportNo.:STS2603143 Photo5 Photo6 Page 4 of 4 ReportNo.:STS2603143 Photo7

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. MPE Report Report No.:STS2603143H03 Issued for Mininglamp Software System Co.,Ltd. Room A1002,10th Floor,Building 1,No.1 Zhongguancun East Road,Haidian District,Beijing,China Product Name: AI audio recorder Brand Name: N/A Model Name: MLC351 Series Model(s): N/A FCC ID: 2BVBD-MLC351 Test Standards: FCC 47CFR §2.1093 Page 2 of 8 Report No.: STS2603143H03 TEST REPORT Applicant’s Name ................. : Mininglamp Software System Co.,Ltd. Address .................................. : Room A1002,10th Floor,Building 1,No.1 Zhongguancun East Road,Haidian District,Beijing,China Manufacturer's Name .......... : Shenzhen New Image Software Communication Co., Ltd. Address .................................. : 810, 813, 8th Floor, Tsinghua Unigroup Science Park, No.13 Langshan Road, North Area, Songpingshan Community High-tech Industrial Park, Xili Subdistrict, Nanshan District, Shenzhen City, Guangdong Province, China Product Description Product Name ........................ : AI audio recorder Brand Name ........................... : N/A Model Name........................... : MLC351 Series Model(s) ...................... : N/A Test Standards ..................... : FCC 47CFR §2.1093 447498 D01 Interim General RF Exposure Guidance v06 The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. Date of Test ............................................ : Date of receipt of test item ...................... : 18 Mar. 2026 Date (s) of performance of tests.............. : 18 Mar. 2026~20 Apr. 2026 Date of Issue ........................................... : 20 Apr. 2026 Test Result ............................................... : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 8 Report No.: STS2603143H03 TABLE OF CONTENTS 1. GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST FACTORY 5 2. FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 8 Page 4 of 8 Report No.: STS2603143H03 Revision History Rev. Issue Date Report No. Effect Page Contents 00 20 Apr. 2026 STS2603143H03 ALL Initial Issue Page 5 of 8 Report No.: STS2603143H03 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name AI audio recorder Brand Name N/A Model Name MLC351 Series Model(s) N/A Model Difference N/A Product Description The EUT is AI audio recorder Operation Frequency: 2.4G WLAN:802.11b/g/n 20: 2412~2462 MHz BLE:2402-2480 MHz Modulation Type: BLE:GFSK 2.4G WLAN: 802.11b(DSSS):CCK,DQPSK,DBPSK 802.11g(OFDM):BPSK,QPSK,16-QAM,64-Q AM 802.11n(OFDM):BPSK,QPSK,16-QAM,64-Q AM Antenna gain: PIFA Antenna Designation: 0.54dBi Power Rating Input: DC 5V 0.5A Adapter N/A Battery Model: 204843 Brand: ST Rated Voltage: 3.8V Charge Limit Voltage: 4.35V Capacity: 470mAh Hardware Version 0.03 Software Version V1.0.4 1.2 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 Page 6 of 8 Report No.: STS2603143H03 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in KDB 447498 D01 General RF Exposure Guidance v06 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. Page 7 of 8 Report No.: STS2603143H03 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(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 The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Page 8 of 8 Report No.: STS2603143H03 2.3 TEST RESULT Maximum measured transmitter power. Worst Case Mode frequency Maximum Output Power Tune up tolerance Max Tune up GHz dBm dBm dBm GFSK(BLE) 2.44 1.23 1±1 2 802.11N20 (2.4G WIFI) 2.462 8.79 8±1 9 Evaluation Result Mode Frequency Antenna Distance RF output power including tune up (dBm) SAR Test Exclusion Threshold SAR Test Exclusion Estimated SAR GHz mm dBm mw GFSK(BLE) 2.44 5 2 1.585 0.495 Yes / 802.11N20 (2.4G WIFI) 2.462 5 9 7.943 2.493 Yes / Note: 1. Remark: The worst case gain of the antenna is 0.54dBi. 2. Threshold at which no SAR required is0.495≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm. 3. Threshold at which no SAR required is2.493≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm. ※※※※※END OF THE REPORT※※※※※

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.:STS2603143W04 Issued for Mininglamp Software System Co.,Ltd. Room A1002,10th Floor,Building 1,No.1 Zhongguancun East Road,Haidian District,Beijing,China Product Name: AI audio recorder Brand Name: N/A Model Name: MLC351 Series Model(s): N/A FCC ID: 2BVBD-MLC351 Test Standards: FCC Part15.247 Page 2 of 70 Report No.: STS2603143W04 TEST REPORT Applicant’s Name ................. : Mininglamp Software System Co.,Ltd. Address ................................. : Room A1002,10th Floor,Building 1,No.1 Zhongguancun East Road,Haidian District,Beijing,China Manufacturer's Name .......... : Shenzhen New Image Software Communication Co., Ltd. Address ................................. : 810, 813, 8th Floor, Tsinghua Unigroup Science Park, No.13 Langshan Road, North Area, Songpingshan Community High-tech Industrial Park, Xili Subdistrict, Nanshan District, Shenzhen City, Guangdong Province, China Product Description Product Name ....................... : AI audio recorder Brand Name .......................... : N/A Model Name .......................... : ... : MLC351 Series Model(s) .................... : N/A Test Standards ..................... : FCC Part15.247 Test Procedure ...................... : ANSI C63.10-2020+Cor 1-2023 This device described above has been tested by STS, 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. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test ........................................... : Date of receipt of test item ..................... : 18 Mar. 2026 Date (s) of performance of tests ............. : 18 Mar. 2026~20 Apr. 2026 Date of Issue .......................................... : 20 Apr. 2026 Test Result.............................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 70 Report No.: STS2603143W04 Table of Contents Page 1. SUMMARY OF TEST RESULTS 7 1.1 TEST FACTORY 8 1.2 MEASUREMENT UNCERTAINTY 8 2. GENERAL INFORMATION 9 2.1 GENERAL DESCRIPTION OF THE EUT 9 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 TEST SOFTWARE AND POWER LEVEL 11 2.4 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 11 2.5 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 12 2.6 EQUIPMENTS LIST 13 3. EMC EMISSION TEST 14 3.1 CONDUCTED EMISSION MEASUREMENT 14 3.2 TEST PROCEDURE 15 3.3 TEST SETUP 15 3.4 EUT OPERATING CONDITIONS 15 3.5 TEST RESULTS 16 4. RADIATED EMISSION MEASUREMENT 18 4.1 RADIATED EMISSION LIMITS 18 4.2 TEST PROCEDURE 20 4.3 TEST SETUP 21 4.4 EUT OPERATING CONDITIONS 21 4.5 FIELD STRENGTH CALCULATION 22 4.6 TEST RESULTS 23 5. DUTY CYCLE 36 5.1 TEST STANDARD 36 5.2 TEST PROCEDURE 36 5.3 DEVIATION FROM STANDARD 36 5.4 TEST SETUP 36 5.6 TEST RESULTS 36 6. CONDUCTED SPURIOUS & BAND EDGE EMISSION 37 6.1 LIMIT 37 6.2 TEST PROCEDURE 37 Page 4 of 70 Report No.: STS2603143W04 Table of Contents Page 6.3 TEST SETUP 37 6.4 EUT OPERATION CONDITIONS 37 6.5 TEST RESULTS 37 7. POWER SPECTRAL DENSITY TEST 38 7.1 LIMIT 38 7.2 TEST PROCEDURE 38 7.3 TEST SETUP 38 7.4 EUT OPERATION CONDITIONS 38 7.5 TEST RESULTS 38 8. BANDWIDTH TEST 39 8.1 LIMIT 39 8.2 TEST PROCEDURE 39 8.3 TEST SETUP 39 8.4 EUT OPERATION CONDITIONS 39 8.5 TEST RESULTS 39 9. PEAK OUTPUT POWER TEST 40 9.1 LIMIT 40 9.2 TEST PROCEDURE 40 9.3 TEST SETUP 40 9.4 EUT OPERATION CONDITIONS 40 9.5 TEST RESULTS 40 10. ANTENNA REQUIREMENT 41 10.1 STANDARD REQUIREMENT 41 10.2 EUT ANTENNA 41 APPENDIX 1-TEST DATA 42 DUTY CYCLE 42 MAXIMUM PEAK CONDUCTED OUTPUT POWER 46 -6DB BANDWIDTH 50 MAXIMUM POWER SPECTRAL DENSITY LEVEL 54 BAND EDGE 58 CONDUCTED RF SPURIOUS EMISSION 63 Page 5 of 70 Report No.: STS2603143W04 Table of Contents Page APPENDIX 2- EUT TEST PHOTO 70 Page 6 of 70 Report No.: STS2603143W04 Revision History Rev. Issue Date Report No. Effect Page Contents 00 20 Apr. 2026 STS2603143W04 ALL Initial Issue Page 7 of 70 Report No.: STS2603143W04 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247 (a)(2) 6dB Bandwidth PASS -- 15.247 (b)(3) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247 (d) Conducted Spurious & Band Edge Emission PASS -- 15.247 (e) Power Spectral Density PASS -- 15.205 Restricted bands of operation PASS -- Part 15.247(d)/ Part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- Note: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020+Cor 1-2023. Page 8 of 70 Report No.: STS2603143W04 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 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 RF output power, conducted ±0.751dB 2 Unwanted Emissions, conducted ±2.888dB 3 All emissions, radiated 9K-30MHz ±2.48dB 4 All emissions, radiated 30M-1GHz ±2.52dB 5 All emissions, radiated 1G-18GHz ±3.48dB 6 All emissions, radiated>18GHz ±4.18dB 7 Conducted Emission (9KHz-150KHz) ±2.48dB 8 Conduc…

Text truncated - open the document above for the full version.

深 圳 合 翊 讯 科 技 有 限 公 司 Customer潮汐 Project T2403 Antenna Revision A1 Prepared by 17550061372 Checked by 15993920520 Date 2025.03.24 深 圳 合 翊 讯 科 技 有 限 公 司 Purpose This report is to measure the performance of antenna for T2403 The antenna operating frequency at 2400-2500MHz All test data are showed as below. Content 2. Product Overview & Dimension ● 3.OTA Data 01 02 1. Test system 03 深 圳 合 翊 讯 科 技 有 限 公 司 Sequence Number Test Item equipment S parameter VSWR Agilent 5071C & Agilent 5071B OTA Test TRP& TIS Agilent 8960 & CMW500 STIMO Gain & Efficiency Gain & Efficiency SATIMO Agilent 5071C 1.TestSystem 深 圳 合 翊 讯 科 技 有 限 公 司 2.Product Overview & Dimension 深 圳 合 翊 讯 科 技 有 限 公 司 0Ω 深 圳 合 翊 讯 科 技 有 限 公 司 Frequency (MHz) 240 Max GAIN (dBi)Efficiency (%) 0 2410 2420 2430 2440 2450 2460 2470 2480 0.54 0.51 0.47 0.41 0.35 0.3 0.25 0.21 0.18 3.Test Resul -16.93 -17.4 -17.71 -18.84 -19.75 -20.85 -21.16 -22.37 -22.68 t 深 圳 合 翊 讯 科 技 有 限 公 司 3.Test Result 3.1 2D Pattern——BTANT 深 圳 合 翊 讯 科 技 有 限 公 司 Test Equipment： R&S CMW500 Test Condition： 3D chamber BandChannel TRP(dBm)TIS(dBm) BR/EDR+LE 0 39 78 -15.02 -14.08 -12.95 4.OT -72.8 -73.56 -74.04 A Data 深 圳 合 翊 讯 科 技 有 限 公 司 3.Test Result 3.1 2D 3D Pattern——BTANT L-TRP 深 圳 合 翊 讯 科 技 有 限 公 司 3.Test Result 3.1 2D 3D Pattern——BTANT L-TIS 深 圳 合 翊 讯 科 技 有 限 公 司深 圳 合 翊 讯 科 技 有 限 公 司

ANT-2400-SPEC-001 | Rev 1.0 Page 1 / 11 PCB ANTENNA SPECIFICATION SHEET 2.4 GHz ISM Band | Inverted-F Antenna (IFA) Document No. ANT-2400-SPEC-001 Revision 1.0 Date 2026-05-22 Frequency Range 2400 - 2480 MHz Peak Gain 0.54 dBi Status Released Address:1903, Building 2, Jiufang Plaza, Tiezai Road, Gongle Community, Xixiang Street, Bao'an District, Shenzhen City, Guangdong Province, China ShenzheShenzhen Heyixun Technology Co., Ltd. n Heyixun Technology Co., Ltd. ANT-2400-SPEC-001 | Rev 1.0 Page 2 / 11 1. General Description This specification defines the electrical, mechanical, and environmental requirements for a 2.4 GHz ISM band PCB antenna designed for embedded wireless applications. The antenna is optimized for Bluetooth Low Energy (BLE), Wi-Fi (802.11 b/g/n), Zigbee, and other 2.4 GHz proprietary protocols. The antenna is an Inverted-F Antenna (IFA) type implemented directly on the PCB substrate, requiring no external antenna component. It is designed for 50 Ω impedance matching and provides near- omnidirectional radiation characteristics suitable for general-purpose wireless communication. 2. Electrical Specifications 2.1 Key Electrical Parameters Parameter Specification Condition Frequency Range 2400 – 2480 MHz ISM Band Center Frequency 2440 MHz — Bandwidth (S11 ≤ -10 dB) ≥ 150 MHz Free Space Peak Gain 0.54 dBi @ 2440 MHz, Free Space Average Gain ≥ -1.5 dBi Over 2400–2480 MHz Radiation Efficiency ≥ 45% @ 2440 MHz Impedance 50 Ω Nominal VSWR ≤ 2.0:1 Over 2400–2480 MHz Return Loss (S11) ≤ -10 dB Over 2400–2480 MHz Polarization Linear (Vertical) — Radiation Pattern Near-Omnidirectional H-Plane Max Input Power 2 W (33 dBm) Continuous Front-to-Back Ratio ≥ 3 dB E-Plane 2.2 Gain Characteristics Frequency (MHz) Peak Gain (dBi) Avg Gain (dBi) 2400 0.46 -1.6 2420 0.50 -1.4 2440 0.54 -1.2 2460 0.51 -1.3 2480 0.47 -1.5 2.3 VSWR Characteristics Frequency (MHz) VSWR Return Loss (dB) 2400 1.82 -9.8 2420 1.65 -12.1 2440 1.45 -15.3 2460 1.58 -13.0 ANT-2400-SPEC-001 | Rev 1.0 Page 3 / 11 Frequency (MHz) VSWR Return Loss (dB) 2480 1.78 -10.5 ANT-2400-SPEC-001 | Rev 1.0 Page 4 / 11 3. Radiation Pattern 3.1 2D Radiation Gain Pattern The following figures show the E-Plane (YZ, φ = 0°) and H-Plane (XY, θ = 90°) radiation gain patterns measured at the center frequency of 2440 MHz. ANT-2400-SPEC-001 | Rev 1.0 Page 5 / 11 E-Plane (YZ Plane) Key Data Angle (θ) Gain (dBi) 0° -18.2 30° -3.8 60° 0.32 90° (Peak) 0.54 120° 0.28 150° -4.5 180° -19.0 270° 0.48 H-Plane (XY Plane) Key Data Angle (φ) Gain (dBi) 0° (Peak) 0.54 45° 0.38 90° -0.15 135° 0.10 180° 0.42 225° 0.12 270° -0.25 315° 0.35 ANT-2400-SPEC-001 | Rev 1.0 Page 6 / 11 3.2 3D Radiation Gain Pattern The 3D radiation pattern illustrates the spatial distribution of the antenna gain. The peak gain of 0.54 dBi is observed at θ = 90°, φ = 0°. 3.3 Return Loss & VSWR 3.4 Gain vs. Frequency ANT-2400-SPEC-001 | Rev 1.0 Page 7 / 11 ANT-2400-SPEC-001 | Rev 1.0 Page 8 / 11 4. Mechanical Specifications 4.1 Antenna Dimensions Parameter Value Tolerance Radiating Arm Length (L1) 15.2 mm ± 0.2 mm Radiating Arm Width (W1) 0.9 mm ± 0.1 mm Feed Arm Length (L2) 2.7 mm ± 0.1 mm Feed Arm Width (W2) 0.5 mm ± 0.1 mm Shorting Arm Length (L3) 5.0 mm ± 0.1 mm Shorting Arm Width (W3) 0.5 mm ± 0.1 mm Ground Clearance 0.5 mm (min) — Keep-out Zone 15.2 × 5.7 mm — 4.2 PCB Substrate Requirements Parameter Specification Material FR-4 Dielectric Constant (εr) 4.4 ± 0.2 Loss Tangent (tan δ) ≤ 0.02 PCB Thickness 1.6 mm (± 0.1 mm) Copper Weight 1 oz (35 μm) Surface Finish ENIG (Recommended) Number of Layers ≥ 2 4.3 Feed Line Requirements Parameter Specification Characteristic Impedance 50 Ω Microstrip Line Width 3.0 mm (for 1.6 mm FR-4) Max Feed Line Length < 12 mm (λ/10) Ground Via Spacing ≤ 5 mm (λ/20) 4.4 Matching Network A PI-type matching network is recomme…

Text truncated - open the document above for the full version.