2A9SC-TNPHASER02Computer Speaker

Model difference letter 2022.12.02 Dear MET Reviewer, This is a new Application from SHENZHEN MARVO TECHNOLOGY CO., LTD Model No.: TNPHASER,TNPHASERW, TNPHASER-B, TNPHASER-W, SD-022 SD-***(***stand for 0-9), SG-***(***stand for 0-9), SK-***(***stand for 0-9),SP-***BT(***stand for 0-9) Use TNPHASER for all tests. All the model are the same circuit and RF module, only for model name. Test sample model: SD-022 (TNPHASER) Thank you for your cooperation! Yours sincerely, Signatory: Name: Liao Fancy Position: Sales Company Name: SHENZHEN MARVO TECHNOLOGY CO., LTD Address: 601-604, 6th Floor, Building A,DongFangYaYuan, ChenTian community,Xixiang, BaoMin 2nd Road, Bao'an District, Shenzhen, China Tel / Fax 86 755 29709391/N/A E-Mail: [email protected]

SHENZHEN MARVO TECHNOLOGY CO., LTD Agent Authorization Letter 2022-12-02 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen Most Technology Service Co., Ltd. to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Name: Liao Fancy Position: Sales Company Name: SHENZHEN MARVO TECHNOLOGY CO., LTD Address: 601-604, 6th Floor, Building A,DongFangYaYuan, ChenTian community,Xixiang, BaoMin 2nd Road, Bao'an District, Shenzhen, China Tel / Fax 86 755 29709391/N/A E-Mail: [email protected]

SHENZHEN MARVO TECHNOLOGY CO., LTD Long Term Confidentiality Request Letter 2022-12-02 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR (FCC ID: 2A9SC-TNPHASER02) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - e.g. Block diagram - e.g. SCH - e.g. Operational Description required to be submitted with this application be permanently withheld from public review. The above documents are company proprietary information that could never get into the possession of your competition. Please contact me if there is any information you may need. Sincerely, Name: Liao Fancy Position: Sales Company Name: SHENZHEN MARVO TECHNOLOGY CO., LTD Address: 601-604, 6th Floor, Building A,DongFangYaYuan, ChenTian community,Xixiang, BaoMin 2nd Road, Bao'an District, Shenzhen, China Tel / Fax 86 755 29709391/N/A E-Mail: [email protected]

Model No.: TNPHASER FRONT VIEW OF SAMPLE BACK VIEW OF SAMPLE Model No.: TNPHASER LEFT VIEW OF SAMPLE RIGHT VIEW OF SAMPLE Model No.: TNPHASER TOP VIEW OF SAMPLE BOTTOM VIEW OF SAMPLE Model No.: TNPHASER Series photos

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Model No.: TNPHASER Page 1 of 2 INTERNAL PHOTO OF SAMPLE PCB INTERNAL PHOTO OF SAMPLE PCB Antenna Location Model No.: TNPHASER Page 2 of 2 INTERNAL PHOTO OF SAMPLE PCB

Shenzhen Most Technology Service Co., Ltd. No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. RF Exposure Evaluation Report Report Reference No. ..................... : FCC ID.. .......................................... : MTEB22111601-H 2A9SC-TNPHASER02 Compiled by ( position+printed name+signature) .. : File administrators Alisa Luo Supervised by ( position+printed name+signature) .. : Test Engineer Sunny Deng Approved by ( position+printed name+signature) .. : Manager Yvette Zhou Date of issue ..................................... : November 18,2022 Representative Laboratory Name .: Shenzhen Most Technology Service Co., Ltd. Address ............................................ : No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. Applicant’s name ............................ : SHENZHEN MARVO TECHNOLOGY CO., LTD Address ............................................ : 601-604, 6th Floor, Building A,DongFangYaYuan, ChenTian community,Xixiang, BaoMin 2nd Road, Bao'an District, Shenzhen, China Test specification/ Standard ..........: 47 CFR Part 1.1307 47 CFR Part 1.1310 KDB447498D01 General RF Exposure Guidance v06 TRF Originator .................................. : Shenzhen Most Technology Service Co., Ltd. Shenzhen Most Technology Service Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Most Technology Service Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Most Technology Service Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description ..................... : Computer Speaker Trade Mark ....................................... : Tilted Nation、Marvo Manufacturer .................................... : SHENZHEN MARVO TECHNOLOGY CO., LTD Model/Type reference....................... : TNPHASER Listed Models .................................. : TNPHASERW, TNPHASER-B, TNPHASER-W, SD-022 SD-***(***stand for 0-9), SG-***(***stand for 0-9), SK-***(***stand for 0-9),SP-***BT(***stand for 0-9) Modulation Type ............................... : GFSK, π/4DQPSK, 8DPSK Operation Frequency ........................ : 2402MHz to 2480MHz Hardware Version .............................. V2.0 Software Version ............................... AFF2 Rating ............................................... : DC 5V by USB Port Result................................................ : PASS Report No.: MTEB22111601-H Page 2 of 6 T E S T R E P O R T Equipment under Test : Computer Speaker Model /Type : TNPHASER Listed Models : TNPHASERW, TNPHASER-B, TNPHASER-W, SD-022 SD-***(***stand for 0-9), SG-***(***stand for 0-9), SK-***(***stand for 0-9),SP-***BT(***stand for 0-9) Remark All the model are the same circuit and RF module, only for model name. Test sample model: SD-022 (TNPHASER) Applicant : SHENZHEN MARVO TECHNOLOGY CO., LTD Address : 601-604, 6th Floor, Building A,DongFangYaYuan, ChenTian community,Xixiang, BaoMin 2nd Road, Bao'an District, Shenzhen, China Manufacturer : SHENZHEN MARVO TECHNOLOGY CO., LTD Address : 601-604, 6th Floor, Building A,DongFangYaYuan, ChenTian community,Xixiang, BaoMin 2nd Road, Bao'an District, Shenzhen, China Test Result: PASS 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. Report No.: MTEB22111601-H Page 3 of 6 1. Revision History Revision Issue Date Revisions Revised By 00 2022-11-18 Initial Issue Alisa Luo Report No.: MTEB22111601-H Page 4 of 6 2. SAR Evaluation 2.1 RF Exposure Compliance Requirement 2.1.1 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. 2.1.2 Limits According to FCC Part1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency (RF) radiation as specified in part1.1307(b) F= Frequency in MHz Friis Formula Friis transmission formula: Pd = (Pout*G)/(4* Pi * R 2) Where Pd = power density in mW/cm2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm Pd id the limit of MPE, 1 mW/cm2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Report No.: MTEB22111601-H Page 5 of 6 2.1.3 EUT RF Exposure Antenna Gain: -0.58dBi Antenna Gain: The maximum Gain measured in fully anechoic chamber is 2.4 in linear scale. Output Power Into Antenna & RF Exposure Evaluation Distance: EDR GFSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402 MHz) 4.443 4.443±1 5.443 Middle(2441MHz) 4.120 4.120±1 5.120 Highest(2480MHz) 3.951 3.951±1 4.951 π/4DQPSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402 MHz) 4.230 4.230±1 5.230 Middle(2441MHz) 4.011 4.011±1 5.011 Highest(2480MHz) 4.360 4.360±1 5.360 8DPSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402 MHz) 4.012 4.012±1 5.012 Middle(2441MHz) 3.082 3.082±1 4.082 Highest(2480MHz) 3.366 3.366±1 4.366 EDR Worst case: GFSK Channel Maximum Peak Conducted Output Power (dBm) Maximum Peak Conducted Output Power (MW) Antenna Gain…

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Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4G ANT Center Frequency Horizontal Vertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dB Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Address No.333 Kexing Road, Xiangzhou District, Zhuhai Antenna Photo & Length (mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Frequency (MHz) Gain(dB) Max Min Avg 2400 -1.26174 -30.0801 -7.18716 2450 -0.765802 -36.5604 -7.48023 2500 -0.585582 -22.0315 -6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Frequency (MHz) Gain(dB) Max Min Avg 2400 -5.2537 -22.1424 -12.4294 2450 -2.4652 -24.5837 -10.4702 2500 -1.86120 -29.5214 -9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

Shenzhen Most Technology Service Co., Ltd. No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. TEST REPORT FCC Rules Part 15.247 Report Reference No. .....................: FCC ID.. .......................................... : MTEB22111601-R1 2A9SC-TNPHASER02 Compiled by ( position+printed name+signature) .. : File administrators Alisa Luo Supervised by ( position+printed name+signature) .. : Test Engineer Sunny Deng Approved by ( position+printed name+signature) .. : Manager Yvette Zhou Date of issue ..................................... : November 18,2022 Representative Laboratory Name .: Shenzhen Most Technology Service Co., Ltd. Address ............................................ : No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. Applicant’s name ............................ : SHENZHEN MARVO TECHNOLOGY CO., LTD Address ............................................ : 601-604, 6th Floor, Building A,DongFangYaYuan, ChenTian community,Xixiang, BaoMin 2nd Road, Bao'an District, Shenzhen, China Test specification/ Standard ..........: FCC Rules Part 15.247 TRF Originator .................................. : Shenzhen Most Technology Service Co., Ltd. Shenzhen Most Technology Service Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Most Technology Service Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Most Technology Service Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description ..................... : Computer Speaker Trade Mark ....................................... : Tilted Nation、Marvo Manufacturer .................................... : SHENZHEN MARVO TECHNOLOGY CO., LTD Model/Type reference....................... : TNPHASER Listed Models .................................. : TNPHASERW, TNPHASER-B, TNPHASER-W, SD-022 SD-***(***stand for 0-9), SG-***(***stand for 0-9), SK-***(***stand for 0-9),SP-***BT(***stand for 0-9) Modulation Type ............................... : GFSK, π/4DQPSK, 8DPSK Operation Frequency ........................ : From 2402MHz to 2480MHz Hardware Version .............................. V2.0 Software Version ............................... AFF2 Rating ............................................... : DC 5V by USB Port Result................................................ : PASS Report No.: MTEB22111601-R1 Page 2 of 42 T E S T R E P O R T Equipment under Test : Computer Speaker Model /Type : TNPHASER Listed Models : TNPHASERW, TNPHASER-B, TNPHASER-W, SD-022 SD-***(***stand for 0-9), SG-***(***stand for 0-9), SK-***(***stand for 0-9),SP-***BT(***stand for 0-9) Remark All the model are the same circuit and RF module, only for model name. Test sample model: SD-022 (TNPHASER) Applicant : SHENZHEN MARVO TECHNOLOGY CO., LTD Address : 601-604, 6th Floor, Building A,DongFangYaYuan, ChenTian community,Xixiang, BaoMin 2nd Road, Bao'an District, Shenzhen, China Manufacturer : SHENZHEN MARVO TECHNOLOGY CO., LTD Address : 601-604, 6th Floor, Building A,DongFangYaYuan, ChenTian community,Xixiang, BaoMin 2nd Road, Bao'an District, Shenzhen, China Test Result: PASS 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. Report No.: MTEB22111601-R1 Page 3 of 42 Contents 1 REVISION HISTORY ................................................................ 4 2 TEST STANDARDS .................................................................. 5 3 SUMMARY ............................................................................. 6 3.1 General Remarks 6 3.2 Product Description 6 3.3 Equipment Under Test 6 3.4 Short description of the Equipment under Test (EUT) 6 3.5 EUT operation mode 7 3.6 Block Diagram of Test Setup 7 3.7 Test Item (Equipment Under Test) Description* 7 3.8 Auxiliary Equipment (AE) Description 7 3.9 Antenna Information* 7 3.10 Related Submittal(s) / Grant (s) 8 3.11 Modifications 8 4 TEST ENVIRONMENT ............................................................... 9 4.1 Address of the test laboratory 9 4.2 Environmental conditions 9 4.3 Summary of measurement results 10 4.4 Statement of the measurement uncertainty 10 4.5 Equipments Used during the Test 11 5 TEST CONDITIONS AND RESULTS ............................................ 12 5.1 AC Power Conducted Emission 12 5.2 Radiated Emission 15 5.3 Maximum Peak Output Power 21 5.4 20dB Bandwidth 22 5.5 Frequency Separation 25 5.6 Number of hopping frequency 28 5.7 Time of Occupancy (Dwell Time) 30 5.8 Spurious RF Conducted Emission 33 5.9 Pseudorandom Frequency Hopping Sequence 39 5.10 Antenna Requirement 40 6 TEST SETUP PHOTOS OF THE EUT .......................................... 41 7 PHOTOS OF THE EUT ............................................................. 41 Report No.: MTEB22111601-R1 Page 4 of 42 1 Revision History Revision Issue Date Revisions Revised By 00 2022-11-18 Initial Issue Alisa Luo Report No.: MTEB22111601-R1 Page 5 of 42 2 TEST STANDARDS The tests were performed according to following standards: FCC Rules Part 15.247 : Frequency Hopping, Direct Spread Spectrum and Hybrid Systems that are in operation within the bands of 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz. ANSI C63.10-2013 : American National Standard for Testing Unlicensed Wireless Devices Report No.: MTEB22111601-R1 Page 6 of 42 3 SUMMARY 3.1 General Remarks Date of receipt of test sample : 2022.11.15 Testing commenced on : 2022.11.15 Testing concluded on : 2022.11.17 3.2 Product Description Product Name: Computer Speaker Model/Type reference: TNPHASER Power Supply： DC 5V by USB Port Testing sample ID： MT22110164 Bluetooth : Supported Type: Bluetooth BR/EDR …

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Model No.: TNPHASER RE TEST SETUP Model No.: TNPHASER CE TEST SETUP