FCC ID: 2AOXY-BH505A-1 SwitchBuds

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: Derric_bai@patazon.net 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-1) The chipset AB1562M supports Bluetooth BDR(GFSK), EDR(/4-DQPSK, 8DPSK) and BLE Mode, But for this device, BLE was disable by software. Sincerely, Signature:

Derric Bai Compliance Manager

ShenzhenQianhaiPatuoxunNetwork&Technologyco.,ltd ADD:WuheRD49#,BantianDistrictB2026thBuildingShenzhen,GuangdongChina TEL:18566621145 FAX:075566607251 Email:Derric_bai@patazon.net 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-1, 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

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: Derric_bai@patazon.net 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, Clients 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: Derric_bai@patazon.net 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-1 In accordance with Sections 0.457 and 0.459 of the Commissions 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 QA-FR-171-A