2A4WA-C492-in-1 audio adapter

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DongguanJieshengdaIntelligentTechnologyCo.,Ltd. Room201,Building4,No.103,BinheNorthRoad,Guanjingtou,FenggangTown,DongguanCity, GuangdongProvince,China FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:Dec.11,2023 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2A4WA-C49 ProductName:2-in-1audioadapter ModelName:C49,C01,JS1,JS2,C83,C82,C89,C89S,C85,C79,C25,F11,F12,F22,F23,F25,F26,F27, F28,F29,F31,F33,BT-13,C57 [DongguanJieshengdaIntelligentTechnologyCo.,Ltd.](“theapplicant”)certifiesthattheequipmentfor whichauthorizationissoughtisnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuanttosection2.903oftheFCCrules. Sincerely, (Applicantsignature) Name:ChenXiaoGuang Title:GeneralManager

DongguanJieshengdaIntelligentTechnologyCo.,Ltd. Room201,Building4,No.103,BinheNorthRoad,Guanjingtou,FenggangTown,DongguanCity, GuangdongProvince,China FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:Dec.11,2023 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2A4WA-C49 ProductName:2-in-1audioadapter ModelName:C49,C01,JS1,JS2,C83,C82,C89,C89S,C85,C79,C25,F11,F12,F22,F23,F25,F26,F27, F28,F29,F31,F33,BT-13,C57 [DongguanJieshengdaIntelligentTechnologyCo.,Ltd.](“theapplicant”)certifiesthat,asofthedateof thefilingoftheapplication,theapplicantisnotidentifiedontheCoveredListasanentityproducing “covered”equipment. Sincerely, (Applicantsignature) Name:ChenXiaoGuang Title:GeneralManager

[DongguanJieshengdaIntelligentTechnologyCo.,Ltd.] [Room201,Building4,No.103,BinheNorthRoad,Guanjingtou,FenggangTown] [DongguanCity,GuangdongProvince] [China] Date:Dec.11,2023 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 FCCID:2A4WA-C49 USAgent–AttestationStatement/Part2.911(d)(7) [DongguanJieshengdaIntelligentTechnologyCo.,Ltd.]certifies,thatasof[Dec.11,2023],we havedesignatedFCCUSAgent,LLCtoacceptserviceofprocessonourbehalfforFCCID: 2A4WA-C49. [DongguanJieshengdaIntelligentTechnologyCo.,Ltd.],acceptstomaintainanagentofservice ofprocessintheUnitedStatesfornolessthanoneyearaftereitherthegranteehaspermanently terminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolvingthe equipment,whicheverislater. FCCUSAgent,LLC,acceptsasofthedateofthefilingofthisapplication,theobligationofbeing thedesignatedagentforthepurposeofacceptingserviceofprocessonbehalfof[Dongguan JieshengdaIntelligentTechnologyCo.,Ltd.]forFCCID:2A4WA-C49 DesignatedAgentInformation: CompanyName:FCCUSAgent,LLC FRN:0033402884 Address:3722IllinoisAvenue,SaintCharles,IL,60174,USA ContactPerson:TimPayne Phone:708-571-3148 Email:[email protected] Sincerely, Company:[DongguanJieshengdaIntelligent TechnologyCo.,Ltd.] FRN:0032008765 DesignatedAgent:FCCUSAgent,LLC CompanyRepresentative:[ChenXiaoGuang] Tel:+86-15889312153 Email:[email protected] DesignatedAgentRepresentative:TimPayne Signature:Signature:

Dongguan Jieshengda Intelligent Technology Co., Ltd. Room 201, Building 4, No. 103, Binhe North Road, Guanjingtou, Fenggang Town, Dongguan City, Guangdong Province, China Agent Authorization Company: Dongguan Jieshengda Intelligent Technology Co., Ltd. Address: Room 201, Building 4, No. 103, Binhe North Road, Guanjingtou, Fenggang Town, Dongguan City, Guangdong Province, China Product Name: 2-in-1 audio adapter Model Number(s): C49, C01, JS1, JS2, C83, C82, C89, C89S, C85, C79, C25, F11, F12, F22, F23, F25, F26, F27, F28, F29, F31, F33, BT-13, C57 Product Description: 2-in-1 audio adapter We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: Dec. 11, 2023 Name: Chen XiaoGuang Title: General Manager Company: Dongguan Jieshengda Intelligent Technology Co., Ltd.

Dongguan Jieshengda Intelligent Technology Co., Ltd. Room 201, Building 4, No. 103, Binhe North Road, Guanjingtou, Fenggang Town, Dongguan City, Guangdong Province, China Dec. 11, 2023 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: Explanation of differences between product types FCC ID: 2A4WA-C49 Models: C49, C01, JS1, JS2, C83, C82, C89, C89S, C85, C79, C25, F11, F12, F22, F23, F25, F26, F27, F28, F29, F31, F33, BT-13, C57 To Whom It May Concern: We, The Dongguan Jieshengda Intelligent Technology Co., Ltd. hereby declare that the model : C49 is identical with the model : C01, JS1, JS2, C83, C82, C89, C89S, C85, C79, C25, F11, F12, F22, F23, F25, F26, F27, F28, F29, F31, F33, BT-13, C57, except the model name. Except for the different above, no other modification is performed. Sincerely, Dongguan Jieshengda Intelligent Technology Co., Ltd. Signature: [Chen XiaoGuang, General Manager]

DongguanJieshengdaIntelligentTechnologyCo.,Ltd. Room201,Building4,No.103,BinheNorthRoad,Guanjingtou,FenggangTown, DongguanCity,GuangdongProvince,China OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:Dec.11,2023 Subject;RequestforConfidentiality FCCID:2A4WA-C49 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram OperationalDescription 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:ChenXiaoGuang Title:GeneralManager

Report No.: AGC11775231201AP03 Page 1 of 3 EXTERNAL PHOTOS TOP VIEW OF EUT BOTTOM VIEW OF EUT Report No.: AGC11775231201AP03 Page 2 of 3 FRONT VIEW OF EUT BACK VIEW OF EUT Report No.: AGC11775231201AP03 Page 3 of 3 LEFT VIEW OF EUT RIGHT VIEW OF EUT ****************************************End of Report*************************************

FCC ID Label Location 10mm*20mm FCC ID: 2A4WA-C49

Report No.: AGC11775231201AP03 Page 1 of 3 INTERNAL PHOTOS VIEW OF EUT(PORT) OPEN VIEW OF EUT Report No.: AGC11775231201AP03 Page 2 of 3 VIEW OF BATTERY INTERNAL VIEW OF EUT (FIGURE 1) BT Antenna Report No.: AGC11775231201AP03 Page 3 of 3 INTERNAL VIEW OF EUT (FIGURE 2) INTERNAL VIEW OF EUT (FIGURE 3) ****************************************End of Report*************************************

Page 1 of 10 RF Exposure Report Report No.: AGC11775231201FH01 FCC ID : 2A4WA-C49 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : 2-in-1 audio adapter BRAND NAME : N/A MODEL NAME : C49, C01, JS1, JS2, C83, C82, C89, C89S, C85, C79, C25, F11, F12, F22, F23, F25, F26, F27, F28, F29, F31, F33, BT-13, C57 APPLICANT : Dongguan Jieshengda Intelligent Technology Co., Ltd. DATE OF ISSUE : Dec. 08, 2023 STANDARD(S) : FCC KDB 447498 D01 V06 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC11775231201FH01 Page 2 of 10 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Dec. 08, 2023 Valid Initial Release Report No.: AGC11775231201FH01 Page 3 of 10 Table of Contents 1. General Information ........................................................................................................................................ 4 2. Product Information ........................................................................................................................................ 5 2.1 Product Technical Description ................................................................................................................... 5 3. Test Environment ............................................................................................................................................ 6 3.1 Address Of The Test Laboratory ............................................................................................................... 6 3.2 Test Facility ................................................................................................................................................ 6 3.3 Environmental Conditions ......................................................................................................................... 7 4. Portable Device Evaluation Method and Limit ............................................................................................. 8 5. Mobile Device Evaluation Method and Limit ................................................................................................ 9 6. Measurement Results ................................................................................................................................... 10 7. Measurement Evaluation .............................................................................................................................. 10 Report No.: AGC11775231201FH01 Page 4 of 10 1. General Information Applicant Dongguan Jieshengda Intelligent Technology Co., Ltd. Address Room 201, Building 4, No. 103, Binhe North Road, Guanjingtou, Fenggang Town, Dongguan City, Guangdong Province, China Manufacturer Dongguan Jieshengda Intelligent Technology Co., Ltd. Address Room 201, Building 4, No. 103, Binhe North Road, Guanjingtou, Fenggang Town, Dongguan City, Guangdong Province, China Factory Dongguan Jieshengda Intelligent Technology Co., Ltd. Address Room 201, Building 4, No. 103, Binhe North Road, Guanjingtou, Fenggang Town, Dongguan City, Guangdong Province, China Product Designation 2-in-1 audio adapter Brand Name N/A Test Model C49 Series Model(s) C01, JS1, JS2, C83, C82, C89, C89S, C85, C79, C25, F11, F12, F22, F23, F25, F26, F27, F28, F29, F31, F33, BT-13, C57 Difference Description All the same except for the model name. Date of receipt of test item Dec. 01, 2023 Date of Test Dec. 01, 2023 to Dec. 08, 2023 Deviation from Standard No any deviation from the test method Condition of Test Sample Normal Test Result Pass Test Report Form No AGCER-FCC-RF Exposure-V1 Note: The test results of this report relate only to the tested sample identified in this report. Prepared By Thea Huang (Project Engineer) Dec. 08, 2023 Reviewed By Calvin Liu (Reviewer) Dec. 08, 2023 Approved By Max Zhang (Authorized Officer) Dec. 08, 2023 Report No.: AGC11775231201FH01 Page 5 of 10 2. Product Information 2.1 Product Technical Description Frequency Band (Operating) Bluetooth: 2.402GHz ~ 2.480GHz Other: Hardware Version C49 20230313 Software Version jsd.c49(C49).1.0.1(qcc3040) Modulation Type BR GFSK, EDR π /4-DQPSK, 8DPSK Maximum Transmitter Power 4.611dBm Device Category Portable (<20cm separation) Mobile (>20cm separation) Others: Antenna Diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Antenna Designation PCB Antenna Antenna Gain 1dBi Minimum Assessment Distance 5mm Evaluation Applied MPE Evaluation SAR Evaluation Report No.: AGC11775231201FH01 Page 6 of 10 3. Test Environment 3.1 Address Of The Test Laboratory Laboratory: Attestation of Global Compliance (Shenzhen) Co., Ltd. Address: 1-2/F, Building 19, Junfeng Industrial Park, Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China 3.2 Test Facility The test facility is recognized, certified, or accredited by the following organizations: CNAS-Lab Code: L5488 Attestation of Global Compliance (Shenzhen) Co., Ltd. has been assessed and proved to follow CNAS-CL01 Accreditation Criteria for Testing and Calibration Laboratories (identical to ISO/IEC17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories.) A2LA-Lab Cert. No.: 5054.02 Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC Laboratory has been accredited by A2LA for technical competence in the field of electrical testing, and proved to follow ISO/IEC 17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories and any additional program requirements in the identified field of testing. FCC-Registration No.: 975832 Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC Laboratory has been registered and fully described in a report filed with the FCC (Federal Communications Commission). The acceptance letter from the FCC is maintained in our files with Registration 975832. IC-Registration No.: 24842(CAB identifier: CN0063) Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC La…

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Antenna specifications Antenna Type：PCB Antenna Antenna Model：C49-ANT Frequency：2402-2480Mhz Manufacturer：Dongguan Jieshengda Intelligent Technology Co., Ltd. Antenna Size： Frequency 2400 Mhz 2450Mhz 2500Mhz Peak Gain(dBi) -1.284 1.00 -0.028 3D RADIATION PATTERN-ANTENNA

Page 1 of 76 FCC Test Report Report No.: AGC11775231201FR01 FCC ID : 2A4WA-C49 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : 2-in-1 audio adapter BRAND NAME : N/A MODEL NAME : C49, C01, JS1, JS2, C83, C82, C89, C89S, C85, C79, C25, F11, F12, F22, F23, F25, F26, F27, F28, F29, F31, F33, BT-13, C57 APPLICANT : Dongguan Jieshengda Intelligent Technology Co., Ltd. DATE OF ISSUE : Dec. 08, 2023 STANDARD(S) : FCC Part 15 Subpart C §15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC11775231201FR01 Page 2 of 76 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Dec. 08, 2023 Valid Initial Release Report No.: AGC11775231201FR01 Page 3 of 76 Table of Contents 1. General Information ........................................................................................................................................ 5 2. Product Information ........................................................................................................................................ 6 2.1 Product Technical Description ................................................................................................................... 6 2.2 Test Frequency List ................................................................................................................................... 6 2.3 Related Submittal(S) / Grant (S) ............................................................................................................... 7 2.4 Test Methodology ...................................................................................................................................... 7 2.5 Receiver Input Bandwidth ......................................................................................................................... 7 2.6 Equally Average Use of Frequencies And Behaviour ............................................................................... 7 2.7 Pseudorandom Frequency Hopping Sequence ........................................................................................ 8 2.8 Special Accessories .................................................................................................................................. 9 2.9 Equipment Modifications ........................................................................................................................... 9 2.10 Antenna Requirement ............................................................................................................................. 9 3. Test Environment .......................................................................................................................................... 10 3.1 Address of The Test Laboratory .............................................................................................................. 10 3.2 Test Facility .............................................................................................................................................. 10 3.3 Environmental Conditions ....................................................................................................................... 11 3.4 Measurement Uncertainty ....................................................................................................................... 11 3.5 List of Equipment Used ........................................................................................................................... 12 4.System Test Configuration ............................................................................................................................ 14 4.1 EUT Configuration ................................................................................................................................... 14 4.2 EUT Exercise ........................................................................................................................................... 14 4.3 Configuration of Tested System .............................................................................................................. 14 4.4 Equipment Used in Tested System ......................................................................................................... 14 4.5 Summary of Test Results ........................................................................................................................ 15 5. Description of Test Modes ........................................................................................................................... 16 6. RF Output Power Measurement .................................................................................................................. 17 6.1 Provisions Applicable .............................................................................................................................. 17 6.2 Measurement Procedure ......................................................................................................................... 17 6.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 17 6.4 Measurement Result ............................................................................................................................... 18 7. 20dB Bandwidth and 99% Occupied Bandwidth Measurement ............................................................... 24 7.1 Provisions Applicable .............................................................................................................................. 24 7.2 Measurement Procedure ......................................................................................................................... 24 7.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 24 7.4 Measurement Results ..........................................................................…

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Report No.: AGC11775231201AP02 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC11775231201AP02 Page 2 of 2 AC POWER LINE CONDUCTED TEST SETUP RF CONDUCTED TEST SETUP ****************************************End of Report*************************************