2AAUI-GDIEXPCBT101EcoPucks

< Grace Digital Inc.> Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD21046 Date: 12-17-2019 Subject; Request for Long Term Confidentiality FCC ID: 2AAUI-GDIEXPCBT101 To Whom It May Concern, Pursuant to the provisions of the Commission’s 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 Operational Description 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, Signature: Name: James Florczak Title: EVP, Operations

Grace Digital Inc. Letter of Authorization Company: Grace Digital Inc. Address: Grace Digital Inc. 10531 4S Commons Drive #166 Suite #430, San Diego, California 92127, United States Product Name: EcoPucks Model Number(s): GDI-EXPCBT101 Product Description: EcoPucks 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. Date: 2019-12-10 Signature: Name: James Florczak Title: EVP, Operations Company: Grace Digital Inc.

Test model number: GDI-EXPCBT101

Product Name:EcoPucks Model No.:GDI-EXPCBT101 FCC ID: 2AAUI-GDIEXPCBT101 IC: 11210A-GDIEXPCBT10 Lable:20mm*8mm

Test model number: GDI-EXPCBT101