2AN3ID35MH8L2.1 speaker

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Date: 04/17/2018 VCB_F-01: Operating Procedures Form – FCC Confidentiality v02 Page 1 of 1 Shenzhen Mengxiang Technology Co., Ltd Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AN3ID35MH8L Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit TypeFile Name 1. Block Diagram, 2. Schematics, 3. Operational Description 1. 2AN3ID35MH8L -Block diagram 2. 2AN3ID35MH8L -SCH 3. 2AN3ID35MH8L -Operational description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below for an initial period ofxxxx (ie- “45”, “90” or “180”) days: Exhibit TypeFile Name N/AN/A Signature: Contact name:Wu Lunch Company name:Shenzhen Mengxiang Technology Co., Ltd Address:3 Floor, No.16 Building, Tongfucun Park, Dalang Longhua District, Shenzhen City, Guangdong Province, China

Date: 04/17/2018 VCB_F-01: Operating Procedures Form – FCC Authorization v02 Page 1 of 1 Shenzhen Mengxiang Technology Co., Ltd Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: 2020/8/12 SUBJECT: FCC Application for (FCC ID: 2AN3ID35MH8L) To Whom It May Concern: We, the undersigned, hereby authorizeAlisa Feng in Shenzhen Huaxia Testing Technology Co., Ltdat1F., Block A of Tongsheng Technology Building, Huahui Road, Dalang Street, Longhua District, Shenzhen, Chinaon our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Shenzhen Huaxia Testing Technology Co., Ltd on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, (Must be signed by the person that is listed on the FCC Website) Signature: Contact name:Wu Lunch Company name:Shenzhen Mengxiang Technology Co., Ltd Address:3 Floor, No.16 Building, Tongfucun Park, Dalang Longhua District, Shenzhen City, Guangdong Province, China

FCC ID:2AN3ID35MH8L FCC ID:2AN3ID35MH8L FCC ID:2AN3ID35MH8L FCC ID:2AN3ID35MH8L FCC ID:2AN3ID35MH8L

MODE:D35MH8L Subwoofer 80W P ower supply:DC18V 4.5A FCC ID: 2AN3ID35MH8L 50.00 mm 70.00 mm

FCC ID:2AN3ID35MH8L FCC ID:2AN3ID35MH8L

Shenzhen Huaxia Testing Technology Co., Ltd 1F., Block A of Tongsheng Technology Building,Huahui Road, Dalang Street, Longhua District, Shenzhen, China Telephone: +86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com Report Template Version: V04 Repor tTemplate Revision Date: 2018-07-06 RF Exposure Evaluation Report The test report is effective only with both signature and specialized stamp, The result(s) shown in this report refer only to the sample(s) tested. Without written approval of CQA, this report can’t be reproduced except in full. Report No.:CQASZ20200500456E-02 Applicant:Shenzhen Mengxiang Technology Co., Ltd Address of Applicant:3 Floor, No.16 Building, Tongfucun Park, Dalang Longhua District, Shenzhen City, Guangdong Province, China Equipment Under Test (EUT): EUT Name:2.1speaker Model No.:D35MH8L Brand Name:technicalPro FCC ID:2AN3ID35MH8L Standards: 47 CFR Part 1.1307 47 CFR Part 2.1093 KDB447498D01 General RF Exposure Guidance v06 Date of Receipt:2020-06-01 Date of Test:2020-06-01 to 2020-06-09 Date of Issue:2020-06-09 Test Result:PASS* *In the configuration tested, the EUT complied with the standards specified above Tested By： (Tom Chen) Reviewed By: (Sheek Luo) Approved By: (Jack Ai) Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200500456E-02 Page: 2 of 6 1Version Revision History Of Report ReportNo.Version Description Issue Date CQASZ20200500456E-02Rev.01 Initial report 2020-06-09 Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200500456E-02 Page: 3 of 6 2 Contents Page 1 VERSION......................................................................................................................................................................2 2CONTENTS..................................................................................................................................................................3 3 GENERAL INFORMATION........................................................................................................................................4 3.1 C LIENTINFORMATION................................................................................................................................................4 3.2 G ENERALDESCRIPTION OFEUT................................................................................................................................4 4 SAR EVALUATION.....................................................................................................................................................5 4.1 RF E XPOSURECOMPLIANCEREQUIREMENT..............................................................................................................5 4.1.1 Standard Requirement..................................................................................................................................5 4.1.2 Limits................................................................................................................................................................5 4.1.3 EUT RF Exposure..........................................................................................................................................6 Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200500456E-02 Page: 4 of 6 3 General Information 3.1 Client Information Applicant: Shenzhen Mengxiang Technology Co., Ltd Address of Applicant: 3 Floor, No.16 Building, Tongfucun Park, Dalang Longhua District, Shenzhen Cit y,GuangdongProvince, China Manufacturer: Shenzhen Mengxiang Technology Co., Ltd Address of Manufacturer: 3 Floor, No.16 Building, Tongfucun Park, Dalang Longhua District, Shenzhen City, Guangdong Province, China 3.2 General Description of EUT Product Name:2.1speaker Model No.: D35MH8L Trade Mark:technicalPro Hardware Version: V1 Software Version: V1 Operation Frequency: 2402MHz~2480MHz Bluetooth Version: V4.2 Modulation Technique: Frequency Hopping Spread Spectrum(FHSS) Modulation Type: GFSK,π/4DQPSK, 8DPSK Number of Channel: 79 Transfer Rate:1Mbps/2Mbps/3Mbps Hopping Channel Type: Adaptive Frequency Hopping systems Sample Type: MobilePortableFix Location Test Software of EUT: MV FrequencyTool v0.2.5 (manufacturer declare) Antenna Type:PCB antenna Antenna Gain:0dBi Power Supply:AC/DC ADAPTER Model: BSG-100W1804500 Input: 100-240V~, 2.0A Max 50/60Hz Output: 18V 4.5A Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200500456E-02 Page: 5 of 6 4 SAR Evaluation 4.1 RF Exposure Compliance Requirement 4.1.1 Standard Requirement According to KDB447498D01 General RF Exposure Guidance v06 4.3.1. Standalone SAR test exclusion considerations 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 Exclusion Threshold condition, listed below, is satisfied. 4.1.2 Limits 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 17 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 Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200500456E-02 Page: 6 of 6 4.1.3EUT RF Exposure Measurement Data GFSK mode Test channelPeak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm)(mW) Lowest (2402MHz)6.2405.5±16.54.467 Middle(2441MHz)…

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Shenzhen Huaxia Testing Technology Co., Ltd 1F., Block A of Tongsheng Technology Building,Huahui Road, Dalang Street, Longhua District, Shenzhen, China Telephone: +86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com Report Template Version: V04 Report Template Revision Date: 2018-07-06 Test Report The test report is effective only with both signature and specialized stamp, The result(s) shown in this report refer only to the sample(s) tested. Without written approval of CQA, this report can’t be reproduced except in full. Report No.:CQASZ20200500456E-01 Applicant:Shenzhen Mengxiang Technology Co., Ltd Address of Applicant:3 Floor, No.16 Building, Tongfucun Park, Dalang Longhua District, Shenzhen City, Guangdong Province, China Equipment Under Test (EUT): EUT Name:2.1speaker Model No.:D35MH8L Brand Name:technicalPro FCC ID:2AN3ID35MH8L Standards:47 CFR Part 15, Subpart C Date of Receipt:2020-06-01 Date of Test:2020-06-01 to 2020-06-09 Date of Issue:2020-06-09 Test Result:PASS* *In the configuration tested, the EUT complied with the standards specified above Tested By： (Tom Chen) Reviewed By: (Sheek Luo) Approved By: (Jack Ai) Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200500456E-01 Page: 2 of 101 1Version Revision History Of Report Report No.Version Description Issue Date CQASZ20200500456E-01Rev.01 Initial report 2020-06-09 Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200500456E-01 Page: 3 of 101 2 Test Summary Test ItemTest RequirementTest methodResult Antenna Requirement 47 CFR Part 15, Subpart C Section 15.203/15.247 (c) ANSI C63.10 (2013)PASS AC Power Line Conducted Emission 47 CFR Part 15, Subpart C Section 15.207 ANSI C63.10 (2013)PASS Conducted Peak Output Power 47 CFR Part 15, Subpart C Section 15.247 (b)(1) ANSI C63.10 (2013)PASS 20dB Occupied Bandwidth 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Carrier Frequencies Separation 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Hopping Channel Number 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Dwell Time 47 CFR Part 15, Subpart C Section 15.247 (a)(1) ANSI C63.10 (2013)PASS Pseudorandom Frequency Hopping Sequence 47 CFR Part 15, Subpart C Section 15.247(b)(4)&TCB Exclusion List (7 July 2002) ANSI C63.10 (2013)PASS Band-edge for RF Conducted Emissions 47 CFR Part 15, Subpart C Section 15.247(d) ANSI C63.10 (2013)PASS RF Conducted Spurious Emissions 47 CFR Part 15, Subpart C Section 15.247(d) ANSI C63.10 (2013)PASS Radiated Spurious emissions 47 CFR Part 15, Subpart C Section 15.205/15.209 ANSI C63.10 (2013)PASS Restricted bands around fundamental frequency (Radiated Emission) 47 CFR Part 15, Subpart C Section 15.205/15.209 ANSI C63.10 (2013)PASS Shenzhen Huaxia Testing Technology Co., Ltd Report No.: CQASZ20200500456E-01 Page: 4 of 101 3 Contents Page 1 VERSION....................................................................................................................................................................2 2 TEST SUMMARY......................................................................................................................................................3 3CONTENTS................................................................................................................................................................4 4 GENERAL INFORMATION.....................................................................................................................................5 4.1 C LIENTINFORMATION...........................................................................................................................................5 4.2 G ENERALDESCRIPTION OFEUT...........................................................................................................................5 4.3 A DDITIONALINSTRUCTIONS..................................................................................................................................7 4.4 T ESTENVIRONMENT..............................................................................................................................................8 4.5 D ESCRIPTION OFSUPPORTUNITS..........................................................................................................................8 4.6 S TATEMENT OF THE MEASUREMENT UNCERTAINTY..............................................................................................9 4.7 T ESTLOCATION...................................................................................................................................................10 4.8 T ESTFACILITY.....................................................................................................................................................10 4.9 A BNORMALITIES FROMSTANDARDCONDITIONS................................................................................................10 4.10 O THERINFORMATIONREQUESTED BY THECUSTOMER......................................................................................10 4.11 E QUIPMENTLIST................................................................................................................................................. 11 5 TEST RESULTS AND MEASUREMENT DATA............................................................................................... 12 5.1 A NTENNAREQUIREMENT.................................................................................................................................... 12 5.2 C ONDUCTEDEMISSIONS......................................................................................................................................13 5.3 C ONDUCTEDPEAKOUTPUTPOWER....................................................................................................................17 5.4 20 DBOCCUPYBANDWIDTH.................................................................................................................…

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FCC ID:2AN3ID35MH8L 1 Photographs - EUT Test Setup 1.1 Radiated Emission 9kHz~30MHz: 30MHz~1GHz: FCC ID:2AN3ID35MH8L Above 1GHz: 1.2 Conducted Emission