FCC ID: 2BBKH-SD408 Public Network Digital Trunking Radios

Model No.:SD408 FE C &

FCC ID: 2BBKH-SD408 WOMVMUYT MOTT TORT S/N:SD408U00001 Public Network Digital Trunking Radios SERIAL USA LLC

SERIAL USA LLC ADD: 11417 Taurus Ct, Orlando, Florida, 32837 United States TEL: 305-938-0525 FAX: 305-938-0525 E-mail: Agarcia@serialusa.com Attestation Letter Date: 03/15/2024 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 2.911(d)(5)(i)(ii) Filing FCC ID: 2BBKH-SD408 SERIAL USA LLC (the applicant) certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. SERIAL USA LLC (the applicant) certifies that as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. Sincerely, Signature Printed Name: Alberto E Garcia Perdomo Title: Representative CFR 47 2.911(d)(5)(i)(ii) Attestation Letter

Quanzhou Tesunho Electronics Co., Ltd ADD: 2#, 5F E-19# Phase 2 Xunmei, Quanzhou, Fujian, China Tel: +86-595-22082266 Fax: +86-595-22082266 Email: cindylau@tesunho.com FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Re: Change of Identification Authorization, FCC ID: 2BBKH-SD408 Date: 2024-03-15 To Whom It May Concern:

This letter grants authorization for representatives of SERIAL USA LLC to apply to the FCC for a change in identification as specified under 47 CFR2.933 of the FCC rules. This authorization applies to Quanzhou Tesunho Electronics Co., Ltd, product name: IP Trunking Radio, FCC ID: 2AKS9TH288, we are aware that SERIAL USA LLC intends to market the above referenced product under their own FCC ID: 2BBKH-SD408. Sincerely, Signature:

Printed Name: Cindy Lau Title: Manager

SERIAL USA LLC ADD: 11417 Taurus Ct, Orlando, Florida, 32837 United States TEL: 305-938-0525 FAX: 305-938-0525 E-mail: Agarcia@serialusa.com FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Request to change in Identification. Date: 2024-03-01 Dear Regulatory Authority, This Change of Identification request applies for a new FCC ID: 2BBKH-SD408 as established in 47CFR2.933(b) for a currently approved device. This application by SERIAL USA LLC will establish a new FCC ID: 2BBKH-SD408 under SERIAL USA LLC grant code for purpose of marketing. The original grant to Quanzhou Tesunho Electronics Co., Ltd will remain in effect. Per 2.933(b) 1. The original identification is FCC ID: 2AKS9TH288 2. The Original grant date is 03-14-2024. 3. The equipment is electrically identical, only the applicant, product name, model name, brand name, address, silk-screen and FCC ID number are different. 4. The original test results are applicable and representative of this changed device 5. External photographs are including in this application The following files are electronically submitted as attachments:

Authorization Letter from Original Grantee Change in ID Request Letter FCC ID Authorization letter External photos FCC ID Label format and location Sincerely, Signature:

Printed Name: Alberto E Garcia Perdomo Title: Representative

U.S. AGENT LETTER OF ATTESTATION Date: 2024-03-15 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 2.911(d)(7) Filing FCC ID: 2BBKH-SD408 SERIAL USA LLC (the Applicant) certifies that, as of the date of the filing of the application, SERIAL USA LLC (U.S. agent). is our designated U.S. agent for service of process for the above referenced FCC ID. SERIAL USA LLC (the Applicant) accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. SERIAL USA LLC (U.S. agent) accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent and Applicant Information:

Name: SERIAL USA LLC Address: 11417 Taurus Ct, Orlando, Florida, 32837 United States FRN: 0033850975 Tel.: 305-938-0525 Email: Agarcia@serialusa.com Signed by (printed name): Alberto E Garcia Perdomo Signature: