FCC ID: OQ5GXLIEM UHF Wireless Transmitter

Label Location 4cm Model: GXLIEM FCC ID: OQ5GXLIEM This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2)this device must accept any interference received, including interference that may causeundesired operation. 2cm

CAD AUDIO LLC

(2020-05-22) Eurofins MET Labs 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize (Global United Technology Services Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Clients signature :

Clients name / title : F.Briggs Carr / President Contact information / address: 6573 Cochran Rd., Bldg I, Solon, Ohio, USA 44139

HONBO AUDIO CHINA LIMITED Date: 5/22/2020 Federal Communications Commission To Whom It May Concern:

The letter grants authorization for representative of CAD AUDIO LLC to apply the FCC for a change in identification. This authorization applies to HONBO AUDIO CHINA LIMITED, FCC ID:

2AG6Q-GXLIEM, granted on 04/13/2020, The equipment is electrically identical. We are aware that CAD AUDIO LLC intends to market the above referenced product under FCC ID: OQ5GXLIEM The only change being the FCC ID and the label on the device. The original test results, technical information and relevant documents continue to be representative of and applicable to the change ID equipment. Should there be any question, please feel free to contact us. Clients signature Clients name / title: Johnny Yue / MANAGER Telephone: 86-13929092530 Email: BCarr@Cadaudio.com

CAD AUDIO LLC

(2020-05-22) MET Laboratories, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (UHF Wireless Transmitter / GXLIEM , GXLIEM2,GXLIEM4/ OQ5GXLIEM) To Whom It May Concern:

This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the (Block Diagram/Schematics/Operational Description) required to be submitted with this application be permanently withheld from public review. Please contact me if there is any information you may need. Sincerely, Clients signature :

Clients name / title : F.Briggs Carr / President Contact information / address: 6573 Cochran Rd., Bldg I, Solon, Ohio, USA 44139

CAD AUDIO LLC Date: 5/22/2020 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Subject: Request to change in Identification To Whom It May Concern:

This application for Change of Identification request a new FCC ID as stipulated in 47CFR 2.933(b) for presently authorized equipment. This application by CAD AUDIO LLC will establish a new FCC ID under FCC ID:

OQ5GXLIEM for the purpose of marketing. The original grant to HONBO AUDIO CHINA LIMITED FCC ID: 2AG6Q-GXLIEM will remain in effect. Per 2.933(b) 1) The original identification is FCC ID: 2AG6Q-GXLIEM 2) The original grant date is 04/13/2020 3) The equipment is electrically and functionally identical. Only the label, Brand name and FCC ID number are different. 4) The original test results are applicable and representative of this change ID device 5) Exterior photographs are included in this application Clients signature Clients name / title: F.Briggs Carr / President Telephone: 440-349-4900 EX.248 Email: BCarr@Cadaudio.com

CADAUDIOLLC Familymodelsdeclarationletter. 2020-05-22 We CAD AUDIO LLC Of 6573 Cochran Rd., Bldg I, Solon, Ohio, USA 44139 Product: UHF Wireless Transmitter Model Name: GXLIEM Serial Model: GXLIEM2,GXLIEM4 All the model are the same circuit and RF module,except model names. Thanks Sincerely, Signature Date: 2020-05-22 President Name: F.Briggs Carr Title: