2AIQW-DA2112ACTIVE SPEAKER

Ningbo Tonwel Audio Co., LTD Agent Authorization Company: Ningbo Tonwel Audio Co., LTD Address: No. 28 Xiyi Road, Jiangshan Town, Yinzhou, Ningbo, China. Product Name: ACTIVE SPEAKER Model Number(s): DA2112 Product Description: BLUETOOTH ACTIVE SPEAKER 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: 2021/01/05 Name: Zhihong Fu Title: Manager Company: Ningbo Tonwel Audio Co., LTD

Ningbo Tonwel Audio Co., LTD Authorization Letter We, (the approval holder) Company name Ningbo Tonwel Audio Co., LTD Addresss No. 28 Xiyi Road, Jiangshan Town, Yinzhou, Ningbo, China. declare that the following representative (agent): Name (person) Bovey Yang Company name Shenzhen STS Test Services Co., Ltd. Addresss 1/F., Building B, Zhuoke Science Park, No.190, Chongqing Road, Fuyong Street, Bao’an District, Shenzhen, Guangdong,China City Shenzhen Country China to act on our behalf on all matters concerning the application and documents submitted to Micom Labs for product certification below Product Description ACTIVE SPEAKER Type or Model(s) DA2112 Tradename or Brand(s) Attestation: City: Date: Name: (this must be a person) Function: Signature: (or official company stamp) Ningbo 2021/01/05 Zhihong Fu Manager

Ningbo Tonwel Audio Co., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2021/01/05 Subject; Request for Confidentiality FCC ID: 2AIQW-DA2112 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, Signature: Name: Zhihong Fu Title: Manager

Page 1 of 5 Report No.: STS2012082 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: DA2112 Photo 1 Photo 2 Page 2 of 5 Report No.: STS2012082 Photo 3 Photo 4 Page 3 of 5 Report No.: STS2012082 Photo 5 Photo 6 Page 4 of 5 Report No.: STS2012082 Photo 7 Photo 8 Page 5 of 5 Report No.: STS2012082 Photo 9

Label Size:20*30mm The label is printed on the shell

Page 1 of 12 Report No.: STS2012082 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: DA2112 Photo 1 Photo 2 Page 2 of 12 Report No.: STS2012082 Photo 3 Photo 4 Page 3 of 12 Report No.: STS2012082 Photo 5 Photo 6 Page 4 of 12 Report No.: STS2012082 Photo 7 Photo 8 BT Antenna Page 5 of 12 Report No.: STS2012082 Photo 9 Photo 10 Page 6 of 12 Report No.: STS2012082 Photo 11 Photo 12 Page 7 of 12 Report No.: STS2012082 Photo 13 Photo 14 Page 8 of 12 Report No.: STS2012082 Photo 15 Photo 16 Page 9 of 12 Report No.: STS2012082 Photo 17 Photo 18 Page 10 of 12 Report No.: STS2012082 Photo 19 Photo 20 Page 11 of 12 Report No.: STS2012082 Photo 21 Photo 22 Page 12 of 12 Report No.: STS2012082 Photo 23 Photo 24

RF Exposure Report FCC ID: 2AIQW-DA2112 RF Exposure Measurement The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. RF Exposure Limit According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environmental impact of the human exposure to radio-frequency (RF) radiation as specified in 1.1307 (b) Limits for Maximum Permissible Exposure (MPE) F= Frequency in MHz Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm²) Limits for Occupational / controlled Exposures 300 - 1500 -- -- F/300 1500 – 100000 -- -- 5.0 Limits for General population / Uncontrolled Exposure 300 - 1500 -- -- F/1500 1500 – 100000 -- -- 1.0 Friss Formula Friss Transmission Formula: Pd = (Pout * G) / (4*pi*r²) 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 the center of radiator in cm If we know the maximum gain of the antenna and the total output power to the antenna, through calculation, we will know MPE value at distance 20cm. EUT Operation condition EUT was enabled to transmit and receive at lowest, middle and highest channels. Classification The antenna of this product, under normal use condition, is at least 20cm away from the body of the user. Warning statement to the user for keeping at least 20cm or more separation distance from the antenna should be included in the User manual. So, this device is classified as Mobile device. BT5.0+EDR Mode 2402-2480MHz Detector PEAK GFSK 0.85±1dBm π/4-DQPSK LOW Channel 3.1±1dBm MID Channel 2±1dBm High Channel 1±1dBm 8DPSK 3.6±1dBm ANT Gain (G) Antenna gain : 0dBi (gain of antenna in linear scale=1) GFSK12402 1.851.53110.00030 1 π/4-DQPSK12402 4.12.57040.00051 1 8DPSK12402 4.62.88400.00057 1 Power Density (mW/cm²) Limit (mW/cm²) ANT Gain(gain of antenna in linear scale) Protocol Channel Frequenc y (MHz) Output Power to Antenna (dBm) Output Power to Antenna (mW) According to the maximum gain of the antenna and the total output power to the antenna, through calculation, we will know max MPE value 0.00057 at distance 20cm. This is less than the limit 1. Compliance the RF exposure requirement.

Any reproduction of this document must be done in full. No single part of this document may be reproduced without permission from STS, all test data presented in this report is only applicable to presented test sample. Shenzhen STS Test Services Co., Ltd. A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China TEL: +86-755 3688 6288 FAX: +86-755 3688 6277 E-mail:[email protected] RADIO TEST REPORT Report No.: STS2012082W01 Issued for Ningbo Tonwel Audio Co., LTD No. 28 Xiyi Road, Jiangshan Town, Yinzhou, Ningbo, China Product Name: ACTIVE SPEAKER Brand Name: Model Name: DA2112 Series Model: N/A FCC ID: 2AIQW-DA2112 Test Standard: FCC Part 15.247 S T L A B S Page 2 of 76 Report No.: STS2012082W01 TEST RESULT CERTIFICATION Applicant’s Name ................... : Ningbo Tonwel Audio Co., LTD Address .................................. : No. 28 Xiyi Road, Jiangshan Town, Yinzhou, Ningbo, China Manufacturer's Name ............. : Ningbo Tonwel Audio Co., LTD Address .................................. : No. 500 Qihang Road, Zhanqi Town, Yinzhou, NINGBO Zhejiang, China. Product Description Product Name ........................ : ACTIVE SPEAKER Brand Name ......................... : Model Name ........................... : DA2112 Series Model .......................... : N/A Test Standards ....................... : FCC Part15.247 Test Procedure ....................... : ANSI C63.10-2013 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of STS, this document may be altered or revised by STS, personal only, and shall be noted in the revision of the document. Date of Test ................................ : Date of receipt of test item .......... : 15 Dec. 2020 Date (s) of performance of tests . : 15 Dec. 2020 ~ 24 Dec. 2020 Date of Issue .............................. : 24 Dec. 2020 Test Result .................................. : Pass Testing Engineer : (Chris Chen) Technical Manager : (Sean she) Authorized Signatory : (Vita Li) Page 3 of 76 Report No.: STS2012082W01 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 FREQUENCY HOPPING SYSTEM REQUIREMENTS 10 2.4 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 12 2.5 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 13 2.6 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 14 2.7 EQUIPMENTS LIST 15 3. EMC EMISSION TEST 17 3.1 CONDUCTED EMISSION MEASUREMENT 17 3.2 RADIATED EMISSION MEASUREMENT 21 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 33 4.1 LIMIT 33 4.2 TEST PROCEDURE 33 4.3 TEST SETUP 34 4.4 EUT OPERATION CONDITIONS 34 4.5 TEST RESULTS 35 5. NUMBER OF HOPPING CHANNEL 50 5.1 LIMIT 50 5.2 TEST PROCEDURE 50 5.3 TEST SETUP 50 5.4 EUT OPERATION CONDITIONS 50 5.5 TEST RESULTS 51 6. AVERAGE TIME OF OCCUPANCY 52 6.1 LIMIT 52 6.2 TEST PROCEDURE 52 6.3 TEST SETUP 52 6.4 EUT OPERATION CONDITIONS 52 6.5 TEST RESULTS 53 7. HOPPING CHANNEL SEPARATION MEASUREMEN 59 Page 4 of 76 Report No.: STS2012082W01 Table of Contents Page 7.1 LIMIT 59 7.2 TEST PROCEDURE 59 7.3 TEST SETUP 59 7.4 EUT OPERATION CONDITIONS 59 7.5 TEST RESULTS 60 8. BANDWIDTH TEST 66 8.1 LIMIT 66 8.2 TEST PROCEDURE 66 8.3 TEST SETUP 66 8.4 EUT OPERATION CONDITIONS 66 8.5 TEST RESULTS 67 9. OUTPUT POWER TEST 73 9.1 LIMIT 73 9.2 TEST PROCEDURE 73 9.3 TEST SETUP 73 9.4 EUT OPERATION CONDITIONS 73 9.5 TEST RESULTS 74 10. ANTENNA REQUIREMENT 75 10.1 STANDARD REQUIREMENT 75 10.2 EUT ANTENNA 75 Page 5 of 76 Report No.: STS2012082W01 Revision History Rev. Issue Date Report NO. Effect Page Contents 00 24 Dec. 2020 STS2012082W01 ALL Initial Issue Page 6 of 76 Report No.: STS2012082W01 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247(a)(1) Hopping Channel Separation PASS -- 15.247(a)(1)&(b)(1) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247(d) Conducted Spurious & Band Edge Emission PASS -- 15.247(a)(1)(iii) Number of Hopping Frequency PASS -- 15.247(a)(1)(iii) Dwell Time PASS -- 15.247(a)(1) Bandwidth PASS -- 15.205 Restricted bands of operation PASS -- Part 15.247(d)/part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2013. Page 7 of 76 Report No.: STS2012082W01 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ±U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.68dB 2 Unwanted Emissions, conducted ±2.988dB 3 All emissions, radiated 30-1GHz ±4.39dB 4 All emissions, radiated 1G-6GHz ±5.10dB 5 All emissions, radiated>6G ±5.48dB 6 Conducted Emission (9KHz-150KHz) ±2.79dB 7 Conducted Emission (150KHz-30MHz) ±2.80dB Page 8 of 76 Report No.: STS2012082W01 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name ACTIVE SPEAKER Trade Name Model Name DA2112 Series Model N/A Model Difference N/A Channel List Please refer to the Note 2. Bluetooth Frequency:2402 – 2480 MHz Modulation…

Text truncated - open the document above for the full version.

Page 1 of 2 FCC ID: 2AIQW-DA2112 DSS Setup photo Model name: DA2112 DSS conduction DSS radiation L Page 2 of 2 FCC ID: 2AIQW-DA2112 DSS radiation H