2ADKJ-BM78MC2BT module

FCC Statement This device complies with part 15 of the FCC rules. Operation is subject to the followi ng two conditions: (1) this device may not cause harmful interference, and (2) this dev ice must accept any interference received, including interference that may caus e undesired operation. Changes or modifications not expressly approved by the party responsible for complia nce 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 Clas s 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 inst alled 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 followin g 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 important anno uncement Important Note: Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

Dalian Golden Hualu Digital Technology Co.,Ltd. No.1, Hua Road, High-Tech Zone,Dalian,Liaoning,116023,China Agent Authorization Company:Dalian Golden Hualu Digital Technology Co.,Ltd. Address: No.1, Hua Road, High-Tech Zone,Dalian,Liaoning,116023,China Product Name: BT module Model Number(s):BM78SPP05MC2 Product Description: The production consists of Headphone and Processor Unit that connected bywirelessly, the Processor Unit has audio input terminal 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: 2019.12.11 Name: Yongjin Che Title: Project Manager Company: Dalian Golden Hualu Digital Technology Co.,Ltd.

MiCOM Labs, 575 Boulder Court, Pleasanton, CA 94566 Tel: +1 (925) 462-0304, Fax: +1 (925) 462-0306, Web: www.micomlabs.com Page 1 of 7 Doc#: Single Certification Service Agreement Rev 1.4 Certification Service Agreement Certification Service Agreement Introduction This Certification Service Agreement was written to cover the Scope of Service and Certification holder/ grantee responsibilities for the countires/domains that MiCOM Labs can issue compliance certificates under its ISO 17065 accreditation status – USA (FCC), Canada (ISED), Japan (MIC) and European Union. General Requirements This Service Agreement covers the requirements of the following four certification schemes as operated by MiCOM Labs Certification; Country Recognition Body Designation Identification No. USA Federal Communications Commission (FCC) TCB US0159 Canada Canada ISED FCB US0159 Japan MIC (Ministry of Internal Affairs and Communication) RCB R210 Europe European Commission NB NB 2280 1.The certification holder/grantee acknowledges and agrees to the following;- (a) always fulfills the certification requirements, including implementing appropriate changes when they are communicated by MiCOM Labs; (b) ensures the product for which a Certificate is issued always fulfils the product compliance requirements under the certification scheme and that all ongoing production of the certified product continues to fulfill the product requirements and agrees that if the conditions under which the Certification was issued are not met, that the Certification will not be valid and will be revoked; (c) makes all necessary arrangements for: 1) the conduct of the evaluation and surveillance (if required), including provision for examining documentation and records, and access to the relevant equipment, location(s), area(s), personnel, and certification holder / grantee's subcontractors; 2) investigation of complaints; 3) the participation of observers, if applicable; (d) makes claims regarding certification consistent with the scope of certification; (e) does not use its product certification in such a manner as to bring MiCOM Labs into disrepute and does not make any statement regarding its product certification that MiCOM Labs may consider misleading or unauthorized; (f) upon suspension, withdrawal, or termination of certification, the certification holder / grantee discontinues its use of all advertising matter that contains any reference thereto and takes action as required by the certification scheme (e.g. the return of certification documents) and takes any other required measures; (g) if the certification holder/ grantee provides copies of the certification documents to others, the documents shall be reproduced in their entirety or as specified in the certification scheme; MiCOM Labs, 575 Boulder Court, Pleasanton, CA 94566 Tel: +1 (925) 462-0304, Fax: +1 (925) 462-0306, Web: www.micomlabs.com Page 2 of 7 Doc#: Single Certification Service Agreement Rev 1.4 Certification Service Agreement (h) in making reference to its product certification in communication media such as documents, brochures or advertising, the certification holder/ grantee complies with the requirements of MiCOM Labs or as specified by the certification scheme; (i) complies with any requirements that may be prescribed in the certification scheme relating to the use of marks of conformity, and that conformity marks are only on specific products found to comply with the requirements, and on information related to the product; (j) keeps a record of all complaints made known to it relating to compliance with certification requirements and makes these records available to MiCOM Labs when requested, and: 1) takes appropriate action with respect to such complaints and any deficiencies found in products that affect compliance with the requirements for certification. 2) documents the actions taken. 2. MiCOM Labs will issue Certification that is valid for the specified equipment as it is presented at the time of certification. The certification holder / grantee will inform MiCOM Labs, without delay, of changes that may affect its ability to conform with any of the requirements under the certification scheme. Some examples of this may be, but are in no way limited to the following;- Product modifications; Changes in the chassis material, chassis gasket methodology / material, grounding, antenna gain, antenna type, shielding material, modification of transmissions lines, changes to transmission line matching circuitry, operating duty cycle, change of product usage, operating frequency, bandwidth, transmit power / EIRP); Changes to; the Legal, commercial, organizational status; contact address and production sites. Such modifications shall require additional approval in the form of a review and amendment to the original product certification and changes to the product certification records including the certificate. 3. MiCOM Labs shall exercise the control as specified by the certification scheme over ownership, use and display of licenses, certificates, marks of conformity, and any other mechanisms for indicating a product is certified. Incorrect references to the certification scheme, standards or misleading use of licenses, certificates, marks, or any other mechanism for indicating a product is certified, found in documentation or other publicity, shall be dealt with by suitable action by MiCOM Labs and/or the appropriate regulatory authority. 4. Confidentiality - MiCOM Labs will hold all forms and documents that make up the certification application confidential and will not release any information to third parties without written consent from the applicant. MiCOM Labs, 575 Boulder Court, Pleasanton, CA 94566 Tel: +1 (925) 462-0304, Fax: +1 (925) 462-0306, Web: www.micomlabs.com Page 3 of 7 Doc#: Single Certification Service Agreement Rev 1.4 Certification Service Agreement General Terms and Conditions: DOCUMENTATION Documentation required for evaluation of the certifi…

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Dalian Golden Hualu Digital Technology Co.,Ltd. No.1, Hua Road, High-Tech Zone,Dalian,Liaoning,116023,China Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: December 3, 2019 Subject; Request for Confidentiality FCC ID: 2ADKJ-BM78MC2 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Dalian Golden Hualu Digital Technology Co.,Ltd. No.1, Hua Road, High-Tech Zone,Dalian,Liaoning,116023,China Signature: Name: Yongjin Che Title: Project Manager

Dalian Golden Hualu Digital Technology Co.,Ltd. No.1, Hua Road, High-Tech Zone,Dalian,Liaoning,116023,China FCC Modular Approval Request Rev 3.0 Federal Communications Commission Equipment Authorization Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: January 14, 2020 Subject; Modular Transmitter Application Company name: Dalian Golden Hualu Digital Technology Co.,Ltd. FCC ID: 2ADKJ-BM78MC2 Dear Sir/Madam, This letter includes the FCC application requirements for for;- FCC KDB 996369 D01 ‘Module Certification Guide v02; and FCC KDB 996369 D03 OEM Manual v01 In accordance with 47CFR 15.212 Modular Transmitters and KDB 996369 D01 ‘Module Equip Auth Guide v02’. FCC ID:2ADKJ-BM78MC2 has been examined against the following requirements. Requirement per 15.212 and KDB 996369 D01 Explanation from Grantee (do not write yes/no, but explain why product complies/how it is achieved) The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly. The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal. Yes The module must contain power supply regulation on the module. Yes The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per §§ 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b). Yes The module must demonstrate compliance in a stand-alone configuration. Yes The module must be labeled with its permanently affixed FCC ID label, or use an electronic display (see KDB Publication 784748). Yes The module must comply with all specific rules applicable to the transmitter, including all the conditions provided in the integration instructions by the grantee. Yes limited single module approval application Request NO Dalian Golden Hualu Digital Technology Co.,Ltd. No.1, Hua Road, High-Tech Zone,Dalian,Liaoning,116023,China FCC Modular Approval Request Rev 3.0 The module must comply with RF exposure requirements Yes Integration Instructions for host product manufacturers The following items are submitted in support of application for Modular Transmitter FCC ID as noted above as required by the FCC KDB 996369 D03 OEM Manual v01. These items are provided as integration instructions for host product manufacturers (e.g., OEM instruction manual) to use when integrating a module in a host product. Any requirements that are not applicable to the Module are as indicated below. Summary of requirements and Checklist. Refer to the KDB for description of the complete requirements; KDB Ref Sect Requirements of KDB 996369 D03 User Manual Page Number reference 2.2 List of applicable FCC rules P3 2.3 Summarize the specific operational use conditions P5 2.4 Limited module procedures P1 2.5 Trace antenna designs 2.6 RF exposure considerations 2.7 Antennas 2.8 Label and compliance information 2.9 Information on test modes and additional testing requirements 2.10 Additional testing, Part 15 Subpart B disclaimer Name: Yongjin Che Date: 2019.12.11 Title: Project Manager Signature of applicant

Application No.: E201910118649 Page 1 / 4 External Photos of EUT EUT-1 EUT-2 Application No.: E201910118649 Page 2 / 4 EUT-3

Label &Label Location 210-137081

Application No.: E201910118649 Page 3 / 4 Internal Photos of EUT EUT-4 EUT-5 antenna Application No.: E201910118649 Page 4 / 4 EUT-6 RF IC

Report No.: E201910118649-2 Application No.: E201910118649 Page 1 of 7 DIRECTIONS OF TEST 1. This company carries out test task according to the national regulation of verifications which can be traced to National Primary Standards and BIPM. 2. The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. 3. If there is any objection concerning the test, the client should inform the laboratory within 15 days from the date of receiving the test report. Report No.: E201910118649-2 Application No.: E201910118649 Page 2 of 7 TABLE OF CONTENTS 1. GENERAL DESCRIPTION OF EUT ..................................................................................................................... 3 2. LABORATORY AND ACCREDITATIONS ............................................................................................................ 4 3. ACCREDITATIONS ........................................................................................................................................... 4 4. EVALUATION METHOD .................................................................................................................................. 5 5. LIMITS FOR GENERAL POPULATION/UNCONTROLLED EXPOSURE .................................................................. 5 6. CALCULATION METHOD ................................................................................................................................. 6 7. ESTIMATION RESULT ...................................................................................................................................... 6 7.3.1. STANDALONE MPE ................................................................................................................................. 7 8. CONCLUSION ................................................................................................................................................. 7 Report No.: E201910118649-2 Application No.: E201910118649 Page 3 of 7 1. GENERAL DESCRIPTION OF EUT 1.1. APPLICANT Name: Dalian Golden Hualu Digital Technology Co.,Ltd. Address: No.1, Hua Road, High-Tech Zone, Dalian,Liaoning,116023,China 1.2. MANUFACTURER Name: Dalian Golden Hualu Digital Technology Co.,Ltd. Address: No.1, Hua Road, High-Tech Zone, Dalian,Liaoning,116023,China 1.3. BASIC DESCRIPTION OF EQUIPMENT UNDER TEST Equipment: BT module Model No.: BM78SPP05MC2 Adding Model: / FCC ID: 2ADKJ-BM78MC2 Trade Name: / Power supply: DC 3.3V-4.2V supplied by battery or DC5V supplied by adapter Frequency Range: 2402MHz~2480MHz Transmit Power: GFSK: 2.06dBm /4-DQPSK: 2.03dBm 8DPSK: 2.48dBm Type of Modulation: FHSS (GFSK for 1Mbps, /4-DQPSK for 2Mbps, 8DPSK for 3Mbps) Antenna Specification: Internal antenna with 2dBi gain (Max.) Temperature Range: -20°C ~+70°C Hardware Version: 1.0 Software Version: 1.36 I/O Port : / Note: / Report No.: E201910118649-2 Application No.: E201910118649 Page 4 of 7 2. LABORATORY AND ACCREDITATIONS The tests and measurements refer to this report were performed by EMC Laboratory of GRG METROLOGY & TEST (SHENZHEN) CO., LTD Add.: No.1301 Guanguang Road Xinlan Community, Guanlan Street, Longhua District Shenzhen, 518110, People’s Republic of China Telephone: +86-755-61180008 Fax: / 3. ACCREDITATIONS Our laboratories are accredited and approved by the following approval agencies. A2LA Certificate Number 2861.01 Report No.: E201910118649-2 Application No.: E201910118649 Page 5 of 7 4. EVALUATION METHOD Exposure category: General population/uncontrolled environment EUT Type: Production Unit Device Type: Mobile Device Systems operating under the provisions of FCC 47 CFR section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as mobile device whereby a distance of 0.2m normally can be maintained between the user and the device, and below RF Permissible Exposure limit shall comply with. In accordance with KDB447498D01 for Simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based on the calculated/estimated, numerically modeled or measured field strengths or power density, is ≤ 1.0. The MPE ratio of each antenna is determined at the minimum test separation distance required by the operating configurations and exposure conditions of the host device, according to the ratio of field strengths or power density to MPE limit, at the test frequency. Either the maximum peak or spatially averaged results from measurements or numerical simulations may be used to determine the MPE ratios. Spatial averaging does not apply when MPE is estimated using simple calculations based on far-field plane-wave equivalent conditions. The antenna installation and operating requirements for the host device must meet the minimum test separation distances required by all antennas, in both standalone and simultaneous transmission operations, to satisfy compliance. 5. LIMITS FOR GENERAL POPULATION/UNCONTROLLED EXPOSURE Report No.: E201910118649-2 Application No.: E201910118649 Page 6 of 7 6. CALCULATION METHOD Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna From the EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the maximum gain of the used 2dBi for BT, the RF power density can be obtained. Frequency Band Antenna type and antenna number Maximum antenna gain 2.4GHz Internal Antenna 2 dBi 7. ESTIMATION RESULT 7.1. CONDUCTED POWER RESULTS Bluetooth Mode Chan…

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Report No.: E201910118649-1 Application No.：E201910118649 Page 1 of 63 DIRECTIONS OF TEST 1. This company carries out test task according to the national regulation of verifications which can be traced to National Primary Standards and BIPM. 2. The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. 3. If there is any objection concerning the test, the client should inform the laboratory within 15 days from the date of receiving the test report. Report No.: E201910118649-1 Application No.：E201910118649 Page 2 of 63 TABLE OF CONTENTS 1. TEST RESULT SUMMARY ............................................................................................................................. 4 2. GENERAL DESCRIPTION OF EUT ............................................................................................................... 5 2.1. APPLICANT............................................................................................................... 5 2.2. MANUFACTURER ................................................................................................... 5 2.3. BASIC DESCRIPTION OF EQUIPMENT UNDER TEST ...................................... 5 2.4. TEST OPERATION MODE....................................................................................... 6 2.5. LOCAL SUPPORTIVE .............................................................................................. 6 3. LABORATORY AND ACCREDITATIONS ................................................................................................... 7 3.1. LABORATORY ......................................................................................................... 7 3.2. ACCREDITATIONS .................................................................................................. 7 3.3. MEASUREMENT UNCERTAINTY ......................................................................... 7 4. LIST OF USED TEST EQUIPMENT AT GRGT ............................................................................................ 8 5. TEST RESULTS ................................................................................................................................................. 9 5.1. E.U.T. TEST CONDITIONS ...................................................................................... 9 5.2. ANTENNA REQUIREMENT.................................................................................. 11 5.3. 20dB BANDWIDTH ................................................................................................ 12 5.3.1. LIMITS ............................................................................................................. 12 5.3.2. TEST PROCEDURES ...................................................................................... 12 5.3.3. TEST SETUP .................................................................................................... 12 5.3.4. TEST RESULTS ............................................................................................... 13 5.4. CARRIER FREQUENCIES SEPARATED ............................................................. 17 5.4.1. LIMITS ............................................................................................................. 17 5.4.2. TEST PROCEDURES ...................................................................................... 17 5.4.3. TEST SETUP .................................................................................................... 17 5.4.4. TEST RESULTS ............................................................................................... 17 5.5. HOPPING CHANNEL NUMBER ........................................................................... 20 5.5.1. LIMITS ............................................................................................................. 20 5.5.2. TEST PROCEDURES ...................................................................................... 20 5.5.3. TEST SETUP .................................................................................................... 20 5.5.4. TEST RESULTS ............................................................................................... 20 5.6. DWELL TIME .......................................................................................................... 22 5.6.1. LIMITS ............................................................................................................. 22 5.6.2. TEST PROCEDURES ...................................................................................... 22 5.6.3. TEST SETUP .................................................................................................... 22 5.6.4. TEST RESULTS ............................................................................................... 22 5.7. CONDUCTED EMISSION MEASUREMENT ...................................................... 27 5.7.1. LIMITS ............................................................................................................. 27 5.7.2. TEST PROCEDURES ...................................................................................... 27 5.7.3. TEST SETUP .................................................................................................... 28 5.7.4. DATA SAMPLE ............................................................................................... 28 5.7.5. TEST RESULTS ............................................................................................... 29 5.8. MAXIMUM PEAK OUTPUT POWER ................................................................... 33 5.8.1. LIMITS ............................................................................................................. 33 5.8.2. TEST PROCEDURES ...................................................................................... 33 5.8.3. TEST SETUP .............................................…

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Report No.: E201910118649-1 Application No.：E201910118649 Page 62 of 63 APPENDIX A: PHOTOGRAPH OF THE TEST ARRANGEMENT CE-Power Line Report No.: E201910118649-1 Application No.：E201910118649 Page 63 of 63 RSE（Below 1GHz） RSE（Above 1GHz） --------------------This is the last page of the report. -----------------------