2ASU5-SR140Dual mode Bluetooth stereo

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance 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 Class 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 installed 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 following 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. Warning: Changes or modifications to this unit not expressly approved by the part responsible for compliance could void the users authority to operate the equipment

Shenzhen Yaxuan Technology Co., Ltd. Model difference statement Product Name: Dual mode Bluetooth stereo Model N o.: xINFERNO-S, SR20B, SR30B, SR40, SR140, SR25B, SR40B We (Shenzhen Yaxuan Technology Co., Ltd., 2F, Bldg A, Jiuwei Third Industrial Park Xixiang, Bao An, Shenzhen, China) hereby state that all the models are the same circuit and RF module, except the appearance, size and model No.. Signature: Name / Jianping Deng Title: Tel: 0086-755-29594851 Email: [email protected] Date: 6.21.2021

C5266091_X8_Ed.1 1/1 Letter of Authorization Company: Shenzhen Yaxuan Technology Co., Ltd. Address: 2F, Bldg A, Jiuwei Third Industrial Park Xixiang, Bao An, Shenzhen, China Product Name: Dual mode Bluetooth stereo Model Number: xINFERNO-S, SR20B, SR30B, SR40, SR140, SR25B, SR40B FCC Identifier: 2ASU5-SR140 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Jianping Deng Date: 6/21/2021 Title: Signature of applicant:

C5266091_X10_Ed.1 1/1 Shenzhen Yaxuan Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 6/21/2021 Subject: Request for Confidentiality FCC ID: 2ASU5-SR140 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality ID Label/Location No No Attestation Statement No No External Photos No Block Diagram Schematics Test Report No No Test Setup Photos No User’s Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) No No SDR Software / Security Info No Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Jianping Deng Date: 6/21/2021 Title:

1 - Page 1 of 4 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] APPENDIX 1- EUT PHOTO Photo 1 (For model xINFERNO-S) Photo 2 1 - Page 2 of 4 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 3 Photo 4 1 - Page 3 of 4 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 5 Photo 6 1 - Page 4 of 4 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 7

1 - Page 1 of 4 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] APPENDIX 1- EUT PHOTO Photo 1 (For model xINFERNO-S) Photo 2 BT & BLE ANT 1 - Page 2 of 4 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 3 Photo 4 1 - Page 3 of 4 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 5 Photo 6 1 - Page 4 of 4 - Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Te l : (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Photo 7

Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] MPE Test Report Report No.: MTi210331016-01E3 Date of issue: June 21, 2021 Applicant: Shenzhen Yaxuan Technology Co., Ltd. Product name: Dual mode Bluetooth stereo Model(s): xINFERNO-S, SR20B, SR30B, SR40, SR140, SR25B, SR40B FCC ID: 2ASU5-SR140 Shenzhen Microtest Co., Ltd. http://www.mtitest.com - Page 2 of 7 - Report No.: MTi210331016-01E3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Instructions 1. The report shall not be partially reproduced without the written consent of the laboratory; 2. The test results of this report are only responsible for the samples submitted; 3. This report is invalid without the seal and signature of the laboratory; 4. This report is invalid if transferred, altered or tampered with in any form without authorization; 5. Any objection to this report shall be submitted to the laboratory within 15 days from the date of receipt of the report. - Page 3 of 7 - Report No.: MTi210331016-01E3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Table of Contents 1 RF EXPOSURE EVALUATION ............................................................................................................................ 5 1.1 LIMITS FOR MAXIMUM PERMISSIBLE EXPOSURE (MPE) ........................................................................................ 5 1.2 MEASUREMENT RESULT ......................................................................................................................................... 6 - Page 4 of 7 - Report No.: MTi210331016-01E3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] TEST RESULT CERTIFICATION Applicant’s name .................... : Shenzhen Yaxuan Technology Co., Ltd. Address .................................. : 2F,Bldg A, Jiuwei Third Industrial Park Xixiang, Bao An, Shenzhen,China Manufacturer's Name ............. : Shenzhen Yaxuan Technology Co., Ltd. Address .................................. : 2F,Bldg A, Jiuwei Third Industrial Park Xixiang, Bao An, Shenzhen,China Product description Product name ......................... : Dual mode Bluetooth stereo Trademark ............................. : Technical Pro Model Name .......................... : xINFERNO-S Serial Model ............................ SR20B, SR30B, SR40, SR140, SR25B, SR40B Standards............................... : N/A Test procedure KDB 447498 D01 v06 Date of Test Date (s) of performance of tests... : Apr. 25, 2021 ~June 02, 2021 Test Result ............................. : Pass This device described above has been tested by Shenzhen Microtest Co., Ltd. and 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. Testing Engineer : (Cindy Qin) Technical Manager : (Leo Su) Authorized Signatory : (Tom Xue) - Page 5 of 7 - Report No.: MTi210331016-01E3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] 1 RF EXPOSURE EVALUATION According to FCC 1.1310: 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 §1.1307(b) 1.1 Limits for Maximum Permissible Exposure (MPE) MPE Calculation Method 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= Numeric gain of the antenna relative to isotropic antenna Pi=3.1415926 R= distance between observation point and center of the radiator in cm(20cm) Pd the limit of MPE, 1mW/cm2. If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. - Page 6 of 7 - Report No.: MTi210331016-01E3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] 1.2 Measurement Result BT & BLE: Operation Frequency: BT GFSK, π/4-DQPSK, 8DPSK: 2402-2480MHz BLE GFSK: 2402-2480MHz Power density limited: 1mW/ cm 2 Antenna Type: BT & BLE Antenna: PCB Antenna; BT antenna gain: 7dBi R=20cm mW=10^(dBm/10) antenna gain Numeric=10^(dBi/10)= 10^(7/10)=5.01 BT: Chann el Freq. (MHz) modulat ion conduct ed power Tune- up power (dBm) Max Antenna Evalua tion result Power density Limits (dBm) tune-up power Gain (mW/c m2 ) (mW/c m2) (dBm) (mW) (dBi) Numeri c 2402 GFSK 2.858 3±1 4 2.512 7 5.01 0.0025 1 2441 3.374 3±1 4 2.512 7 5.01 0.0025 1 2480 2.716 3±1 4 2.512 7 5.01 0.0025 1 2402 π/4- DQPSK 2.901 3±1 4 2.512 7 5.01 0.0025 1 2441 3.550 3±1 4 2.512 7 5.01 0.0025 1 2480 2.796 3±1 4 2.512 7 5.01 0.0025 1 2402 8DPSK 2.966 3±1 4 2.512 7 5.01 0.0025 1 2441 3.513 3±1 4 2.512 7 5.01 0.0025 1 2480 2.866 3±1 4 2.512 7 5.01 0.0025 1 - Page 7 of 7 - Report No.: MTi210331016-01E3 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mt…

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

Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Test Report Report No.: MTi210331016-01E2 Date of issue: June 21, 2021 Applicant: Shenzhen Yaxuan Technology Co., Ltd. Product name: Dual mode Bluetooth stereo Model(s): xINFERNO-S, SR20B, SR30B, SR40, SR140, SR25B, SR40B FCC ID: 2ASU5-SR140 Shenzhen Microtest Co., Ltd. http://www.mtitest.com - Page 2 of 46 - Report No.: MTi210331016-01E2 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Instructions 1. The report shall not be partially reproduced without the written consent of the laboratory; 2. The test results of this report are only responsible for the samples submitted; 3. This report is invalid without the seal and signature of the laboratory; 4. This report is invalid if transferred, altered or tampered with in any form without authorization; 5. Any objection to this report shall be submitted to the laboratory within 15 days from the date of receipt of the report. - Page 3 of 46 - Report No.: MTi210331016-01E2 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’ an District, Shenzhen, Guangdong, China. Tel: (86-755)88850135 Fax: (86-755) 88850136 Web:www.mtitest.com E-mail: [email protected] Table of Contents 1. GENERAL INFORMATION ................................................................................................................................... 6 1.1. DESCRIPTION OF EUT ................................................................................................................................................... 6 1.2. OPERATION CHANNEL LIST .............................................................................................................................................. 6 1.3. TEST CHANNEL LIST ....................................................................................................................................................... 7 1.4. ANCILLARY EQUIPMENT LIST ........................................................................................................................................... 7 1.5. DESCRIPTION OF SUPPORT UNITS .................................................................................................................................... 7 2. SUMMARY OF TEST RESULTS .......................................................................................................................... 8 3. TEST FACILITIES AND ACCREDITATIONS ...................................................................................................... 9 3.1. TEST LABORATORY ........................................................................................................................................................ 9 3.2. ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 9 3.3. MEASUREMENT UNCERTAINTY ........................................................................................................................................ 9 3.4. TEST SOFTWARE ........................................................................................................................................................... 9 4. EQUIPMENT LIST ............................................................................................................................................... 10 5. TEST RESULT ..................................................................................................................................................... 11 5.1. ANTENNA REQUIREMENT ............................................................................................................................................. 11 5.1.1 Standard Requirement ...................................................................................................................................... 11 5.1.2 EUT Antenna ..................................................................................................................................................... 11 5.2. PEAK OUTPUT POWER TEST ......................................................................................................................................... 12 5.2.1 Limit .................................................................................................................................................................. 12 5.2.2 Test setup .......................................................................................................................................................... 12 5.2.3 Test Procedure ................................................................................................................................................... 12 5.2.4 Test Results ........................................................................................................................................................ 12 5.3. CONDUCTED EMISSION ................................................................................................................................................ 15 5.3.1 Limits ................................................................................................................................................................. 15 5.3.2 Test Setup .......................................................................................................................................................... 15 5.3.3 Test Procedure ................................................................................................................................................…

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

Model: xINFERNO-S Radiated emission Conducted emission