2AWQF-TWS2000TINHIFI tws2000

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date: 2020/06/22 TO WHOM IT MAY CONCERN Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name 2AWQF-TWS2000 TWS2000 For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name/Title： Boqiang Tang/ Manager Company: zhongshan Dongting ELectronics technology Co.Ltd. Address: Room 27B, building 2, 383 fuhua road, western district, zhongshan city Phone: 86 0760-88621055 Fax: 86 0760-88621055 E-Mail: [email protected]

zhongshan Dongting ELectronics technology Co.Ltd. Room 27B, building 2, 383 fuhua road, western district, zhongshan city Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 06/22/2020 To whom it may concern: We, zhongshan Dongting ELectronics technology Co.Ltd. the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2AWQF-TWS2000 including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title： Boqiang Tang/ Manager Company: zhongshan Dongting ELectronics technology Co.Ltd. Address: Room 27B, building 2, 383 fuhua road, western district, zhongshan city Phone: 86 0760-88621055 Fax: 86 0760-88621055 E-Mail: [email protected]

GTS202006000047 Product Name: TINHIFI tws2000 Test Model No.: TWS2000 EUT Constructional Details External Photo Fig.1 Fig.2 GTS202006000047 Fig.3 Fig.4 GTS202006000047 Fig.5 Fig.6 GTS202006000047 Fig.7 Fig.8 GTS202006000047 Fig.9 Fig.10 GTS202006000047 Fig.11 Fig.12 GTS202006000047 Fig.13 Fig.14 GTS202006000047 Fig.15 Fig.16 GTS202006000047 Fig.17 Fig.18 GTS202006000047 Fig.19 Fig.20

FCC ID: 2AWQF-TWS2000

GTS202006000047 Product Name: TINHIFI tws2000 Test Model No.: TWS2000 EUT Constructional Details Internal Photo Fig.1 Fig.2 GTS202006000047 Fig.3 Fig.4 GTS202006000047 Fig.5

RF Exposure evaluation FCC ID: 2AWQF-TWS2000 1.1. Applicable Standard According to §1.1307(b)(1), systems operating under the provisions of this 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. According to §1.1310 and §2.1093 RF exposure requirement KDB447498 v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 1.2. Requirement According to KDB447498 D01 General RF Exposure Guidance v06 Section 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 Test Exclusion Threshold condition, listed below, is satisfied. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions.22 The minimum test separation distance is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander (see 5) of section 4.1). To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, typically in the SAR measurement or SAR analysis report, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting is required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for the SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions; for example, handheld PTT two-way radios, handsets, laptops & tablets etc.23 “ [(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 • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below 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 according to 5) in section 4.1 is applied to determine SAR test exclusion. 1.3. Manufacturing tolerance GFSK(Peak) Channel Channel 00 Channel 39 Channel 78 Target (dBm) 6.00 6.00 6.00 Tolerance ±(dB) 1.0 1.0 1.0 π/4DQPSK (Peak) Channel Channel 00 Channel 39 Channel 78 Target (dBm) 5.00 5.00 5.00 Tolerance ±(dB) 1.0 1.0 1.0 8-DPSK (Peak) Channel Channel 00 Channel 39 Channel 78 Target (dBm) 5.00 5.00 5.00 Tolerance ±(dB) 1.0 1.0 1.0 Page 2 of 2 2. E v a l u a t i o n R e s u l t Evaluation Results Band/Mode f (GHz) Antenna Distance (mm) RF output power (including tune-up tolerance) SAR Test Exclusion Threshold SAR Test Exclusion dBm mW BT 2.480 5 7.0 5.012 1.58<3.0 Yes 3. C o n c l u s i o n The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB 447498 v06 .....................End of Report.........................

Global United Technology Services Co., Ltd. Report No.: GTS202006000047F01 Authorized Signature: Robinson Lo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 50 1 Cover Page TEST REPORT Applicant: zhongshan Dongting ELectronics technology Co.Ltd. Address of Applicant: Room 27B, building 2, 383 fuhua road, western district, zhongshan city Manufacturer : Dongguan city vowel electronics co. LTD. Address of Manufacturer : 100 meters west of botou industrial zone, dongguan city, guangdong province (south of shipai avenue) Equipment Under Test (EUT) Product Name: TINHIFI tws2000 Model No.: TWS2000 Trade Mark: TINHIFI FCC ID: 2AWQF-TWS2000 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of sample receipt: Apr.20,2020 Date of Test: Jun.01,2020- Jun.12,2020 Date of report issued: Jun.12,2020 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTS202006000047F01 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 50 2 Version Version No. Date Description 00 Jun.12,2020 Original Tested/ Prepared By Date: May.27,2020 Project Engineer Check By: Date: Jun.12,2020 Reviewer Report No.: GTS202006000047F01 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 50 3 Contents Page 1COVER PAGE .......................................................................................................................................... 1 2VERSION .................................................................................................................................................. 2 3CONTENTS .............................................................................................................................................. 3 4TEST SUMMARY ..................................................................................................................................... 4 5GENERAL INFORMATION ...................................................................................................................... 5 5.1G ENERAL D ESCRIPTION OF EUT ......................................................................................................... 5 5.2T EST MODE ........................................................................................................................................ 7 5.3D ESCRIPTION OF S UPPORT U NITS ....................................................................................................... 7 5.4D EVIATION FROM S TANDARDS ............................................................................................................. 7 5.5A BNORMALITIES FROM S TANDARD C ONDITIONS .................................................................................... 7 5.6T EST F ACILITY .................................................................................................................................... 7 5.7T EST L OCATION .................................................................................................................................. 7 5.8A DDITIONAL I NSTRUCTIONS ................................................................................................................. 7 6TEST INSTRUMENTS LIST ..................................................................................................................... 8 7TEST RESULTS AND MEASUREMENT DATA .................................................................................... 10 7.1A NTENNA REQUIREMENT ................................................................................................................... 10 7.2C ONDUCTED E MISSIONS ................................................................................................................... 11 7.3C ONDUCTED P EAK O UTPUT P OWER .................................................................................................. 14 7.420 D B E MISSION B ANDWIDTH ............................................................................................................. 15 7.5F REQUENCIES S EPARATION .............................................................................................................. 19 7.6H OPPING C HANNEL N UMBER ............................................................................................................. 21 7.7D WELL T IME ..................................................................................................................................... 23 7.8P SEUDORANDOM F REQUENCY H OPPING S EQUENCE .......................................................................... 28 7.9B AND E DGE ...................................................................................................................................... 29 7.9.1Conducted Emission Method ..................................................................................................... 29 7.9.2Radiated Emission Method ........................................................................................................ 33 7.10S PURIOUS E MISSION ......................................................................................................................... 36 7.10.1Conducted Emission Method ................................................................................................ 36 7.10.2Radiated Emission…

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GTS202006000047 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1 of 2 Product Name: TINHIFI tws2000 Test Model No.: TWS2000 Test Setup Photo Radiated Emission GTS202006000047 Global United Technology Services Co., Ltd. No. 123-128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 2 Conducted Emission ------End------