2AOXY-BH505ASwitchBuds

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Shenzhen Qianhai Patuoxun Network & Technology co.,ltd ADD: Wuhe RD 49#, Bantian District B-202 6th Building Shenzhen, Guangdong China TEL: 18566621145 FAX: 0755-66607251 E-mail: [email protected] Date: 2021-1-20 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir/Madam, We, Shenzhen Qianhai Patuoxun Network & Technology co.,ltd, 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: SwitchBuds, Model: DL-02, DL-04,BH505A,FCC ID: 2AOXY-BH505A) The chipset AB1562M 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

Shenzhen Qianhai Patuoxun Network & Technology co.,ltd ADD: Wuhe RD 49#, Bantian District B‐202 6th Building Shenzhen, Guangdong China TEL: 18566621145 FAX: 0755‐66607251 E‐mail: [email protected] DECLARATION OF SIMILARITY Date: 2021-1-20 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam: We, Shenzhen Qianhai Patuoxun Network & Technology co.,ltd, hereby declare that the product: SwitchBuds, FCC ID: 2AOXY-BH505A, model: DL-04,BH505A is electrically identical with the model: DL-02 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-170-B Shenzhen Qianhai Patuoxun Network & Technology co.,ltd ADD: Wuhe RD 49#, Bantian District B-202 6th Building Shenzhen, Guangdong China TEL: 18566621145 FAX: 0755-66607251 E-mail: [email protected] FCC Authorization Date: 2021-1-20 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We , Shenzhen Qianhai Patuoxun Network & Technology co.,ltd, Hereby authorizes Bay Area Compliance Laboratories Corporation to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratory Corporation on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Client’s signature Derric Bai Compliance Manager

QA-FR-171-A Shenzhen Qianhai Patuoxun Network & Technology co.,ltd ADD: Wuhe RD 49#, Bantian District B-202 6th Building Shenzhen, Guangdong China TEL: 18566621145 FAX: 0755-66607251 E-mail: [email protected] FCC Confidential Authorization Date: 2021-1-20 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2AOXY-BH505A In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, (Shenzhen Qianhai Patuoxun Network & Technology co.,ltd) 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 Left

13.68 mm 12.06 mm 8.91 mm 1 1 . 8 1 m m

EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Left Unit Antenna 、

FCC PART 15.247 TEST REPORT For Shenzhen Qianhai Patuoxun Network & Technology Co., Ltd. Wuhe RD 49#, Bantian District B-202 6th Building Shenzhen, Guangdong China FCC ID: 2AOXY-BH505A Report Type: Original Report Product Name: SwitchBuds Report Number: RDG201217014-00A Re port Date: 2021-01-26 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.: RDG201217014-00A Page 2 of 50 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 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 §15.209, §15.205 & §15.247(d) - SPURIOUS EMISSIONS ............................................................................. 11 APPLICABLE STANDARD ............................................................................................................................................ 11 EUT SETUP ................................................................................................................................................................ 11 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 12 TEST PROCEDURE ...................................................................................................................................................... 12 CORRECTED AMPLITUDE & MARGIN CALCULATION ................................................................................................. 12 TEST EQUIPMENT LIST AND DETAILS ......................................................................................................................... 13 TEST DATA ................................................................................................................................................................ 13 FCC §15.247(a) (1) - CHANNEL SEPARATION TEST ......................................................................................... 19 APPLICABLE STANDARD ............................................................................................................................................ 19 TEST EQUIPMENT LIST AND DETAILS ......................................................................................................................... 19 TEST PROCEDURE ...................................................................................................................................................... 19 TEST DATA ................................................................................................................................................................ 19 FCC §15.247(a) (1) – 20 dB BANDWIDTH TESTING ..............................................................................…

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