FCC ID: 2ACP4LBT1814 Bluetooth Headphones

Sentry Industries Limited Agent Authorization Company: Sentry Industries Limited Address: 507 Houston Center, 63 Mody Road, Tst, Hong Kong, China Product Name: Bluetooth Headphones Model Number(s): BT920, BT930, BT931, BT932, BT934 Product Description: Bluetooth Headphones 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: 2020-07-23 Name:

Peetu Melwani Company: Sentry Industries Limited

Sentry Industries Limited Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2020-07-23 Subject; Request for Confidentiality FCC ID: 2ACP4LBT1814 To Whom It May Concern, Pursuant to the provisions of the Commissions 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 External Photos Test Setup Photos Internal Photos User Manual 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);

OR For 45 days, pursuant to Public Notice DA 04-1705. 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 Sentry Industries Limited Contact person: Peetu Melwani

Sentry Industries Limited July 23, 2020 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: Explanation of differences between product types To Whom It May Concern:

FCC ID : 2ACP4LBT1814 Model Number: BT920, BT930, BT931, BT932, BT934 We, The Sentry Industries Limited hereby declare that the model : BT930, BT931, BT932, BT934 is identical with the model : BT920 except the model name. Except for the different above, no other modification is performed. Sincerely, Signature:

Sentry Industries Limited Contact person: Peetu Melwani