2AMH2-BH390BWIRELESS TRANSMITTER & RECEIVER

MPOW TE CHNOLOGY CO.,LIMITED ADD: FLAT/RM 605 6/F FA YUEN COMMERCIAL BUILDING 75-77 FA YUEN STREET MONGKOK KL HONG KONG TEL: 18566621145 FAX: +86-755-26008484 Email: [email protected] Date: 2021-3-31 To whom it may concern Dear S ir/Madam, We, MPOW TECHNOLOGY CO.,LIMITED, hereby authorize Bay Area Compliance Laboratories Corp to act as a laboratory for testing and test report generation for the following project(s): (Product description: WIRELESS TRANSMITTER & RECEIVER, FCC ID:2AMH2-BH390B, Model: BH390B, BH390A) The chipset CSR8670 supports Bluetooth BDR(GFSK), EDR(π/4-DQPSK, 8DPSK) and BLE Mode, But for this device, BLE was disable by software. Sincerely, Signature: Derric Bai Compliance Manager FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation D i vision 7435 Oakland Mill s Road Columbia, MD 21046

MPOW TECHNOLOGY CO.,LIMITED Add: FLAT/RM 605 6/F FA YUEN COMMERCIAL BUILDING 75-77 FA YUEN STREET MONGKOK KL HONG KONG Tel: 18566621145 Fax: +86-755-26008484 Email: [email protected] DECLARATION OF SIMILARITY Date: 2021-3-31 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam: We, MPOW TECHNOLOGY CO.,LIMITED, hereby declare that the product: WIRELESS TRANSMITTER & RECEIVER, FCC ID: 2AMH2-BH390B. model: BH390A is electrically identical with the model: BH390B which was tested by BACL with the same electromagnetic emissions and electromagnetic compatibility characteristics. A description of the differences between those models and that are declared similar are as follows: They are the same product, and just the different model name, the rest are the same. Please contact me should there be need for any additional clarification or information. Best Regards, Signature: Derric Bai Compliance Manager

QA-FR-171-A MPOW TECHNOLOGY CO.,LIMITED Add: FLAT/RM 605 6/F FA YUEN COMMERCIAL BUILDING 75-77 FA YUEN STREET MONGKOK KL HONG KONG Tel: 18566621145 Fax: +86-755-26008484 Email: [email protected] FCC Confidential Authorization Date: 2021-3-31 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2AMH2-BH390B In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, (MPOW TECHNOLOGY CO.,LIMITED) hereby requests long-term confidential treatment of information accompanying this application as outlined below:  Block Diagram  Schematics  Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely, Signature: Derric Bai Compliance Manager

EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS

G G

EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Antenna

FCC PART 15.247 TEST REPORT For MPOW TECHNOLOGY CO.,LIMITED FLAT/RM 605 6/F FA YUEN COMMERCIAL BUILDING 75-77 FA YUEN STREET MONGKOK KL HONG KONG FCC ID: 2AMH2-BH390B Report Type: Original Report Product Name: WIRELESS TRANSMITTER & RECEIVER Re port Number: RDG210310004-00A Re port Date: 2021-03-31 Reviewed By: Ivan Cao Assistant Manager Test Laboratory: Bay Area Compliance Laboratories Corp. (Dongguan) No.12, Pulong East 1 st Road, Tangxia Town, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG210310004-00A Page 2 of 53 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 RELATED SUBMITTAL(S)/GRANT(S) ............................................................................................................................. 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 DECLARATIONS ............................................................................................................................................................ 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 6 SUPPORT CABLE LIST AND DETAILS ............................................................................................................................ 6 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 7 SUMMARY OF TEST RESULTS ............................................................................................................................... 8 FCC §15.247 (i) & §1.1310 & §2.1093- RF EXPOSURE ............................................................................................ 9 APPLICABLE STANDARD .............................................................................................................................................. 9 FCC §15.203 - ANTENNA REQUIREMENT ........................................................................................................... 10 APPLICABLE STANDARD ............................................................................................................................................ 10 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 10 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 11 APPLICABLE STANDARD ............................................................................................................................................ 11 EUT SETUP ................................................................................................................................................................ 11 EMI TEST RECEIVER SETUP ....................................................................................................................................... 11 TEST PROCEDURE ...................................................................................................................................................... 12 CORRECTED AMPLITUDE & MARGIN CALCULATION ................................................................................................. 12 TEST EQUIPMENT LIST AND DETAILS ......................................................................................................................... 12 TEST DATA ................................................................................................................................................................ 13 FCC §15.209, §15.205 & §15.247(d) - SPURIOUS EMISSIONS ............................................................................. 15 APPLICABLE STANDARD ............................................................................................................................................ 15 EUT SETUP ................................................................................................................................................................ 15 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 16 TEST PROCEDURE ................................................................................................................…

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

EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emissions Conducted Emissions Radiated Emission Below 1GHz Radiated Emission Above 1GHz View