2AC23-WXT5VWIFI+BT Module

Hui Zhou Gaoshengda Technology Co.,LTD Date: 6/6/2024 Federal Communications Commissions Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 RE: CFR 47 §2.911 (d)(5) Attestation FCC ID: 2AC23-WXT5V Grantee‘s FRN: 0023889280 1. Hui Zhou Gaoshengda Technology Co.,LTD 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. 2. Hui Zhou Gaoshengda Technology Co.,LTD 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 and is not an affiliate or subsidiary of an entity identified on the Covered List. Sincerely yours, Name: Hui Guan Job Title: Manger Company Name: Hui Zhou Gaoshengda Technology Co.,LTD

Hui Zhou Gaoshengda Technology Co.,LTD Date: 6/6/2024 Federal Communications Commissions Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 RE: CFR 47 §2.911 (d)(7) Agent Designation Attestation FCC ID: 2AC23-WXT5V Grantee‘s FRN: 0023889280 Hui Zhou Gaoshengda Technology Co.,LTD as required by section 2.911(d)(7), designates the following agent, located in the United States, for purposes of acting as the applicant’s agent for service of process. The applicant acknowledges that they will 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. The applicant further acknowledges their responsibility under CFR 47 §2.929(c) to inform the FCC whenever the agent information changes. U.S. Agent Information: Agent Company Name：VISHTEC LLC FCC FRN: 0033407131 Agent Contact Name: Alan Graham Agent US Address: 9888 W Belleview Ave Ste 2142 Denver CO 80123 Agent Email Address: [email protected] Sincerely yours, Name: Hui Guan Job Title: Manger Company Name: Hui Zhou Gaoshengda Technology Co.,LTD

Date: 3/13/2024 Federal Communications Commissions Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 RE: CFR 47 §2.911 (d)(7) FCC US Agent Letter of Attestation Grantee Code: 2AC23 Grantee's FRN:0023889280 To whom it may concern: FCC US Agent Agent Company Name：VISHTEC LLC FCC FRN: 0033407131 Agent Contact Name: Alan Graham Agent US Address: 9888 W Belleview Ave Ste 2142 Denver CO 80123 Agent Email Address: [email protected] This letter is to confirm that we have accepted the responsibility to act as US Agent on behalf of Hui Zhou Gaoshengda Technology Co.,LTD (“the applicant”). We are aware of the requirements and responsibilities of the applicant’s agent for service of process as outlined in the FCC section 2.911(d)(7) and Report and Order FCC 22-84 paragraph 63. Sincerely, Signature Authorized Agent Contact Person Name: Alan Graham Agent contact Job Title: Compliance manager Agent Company name: VISHTEC LLC

Hui Zhou Gaoshengda Technology Co.,LTD Date: April 16, 2024 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 To whom it may concern: I, the undersigned, hereby authorize UL Verification Services Inc. to act o n our behalf in all manners r elating t o application for equipment a uthorization, including signing of all documents relating to these matters. Any and all acts carried out b y UL Verification Services Inc. on our behalf shall have the same effect a s act s of our own. I, 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. 853(a). In authorizing UL Verification Services Inc. as our representative, we still recognize that we are responsible to: a)comply with the relevant provisions of the certification program; b)make all necessary arrangements for the conduct of the evaluation, including provision for examining documentation and access to all areas, records (including internal audit reports) and personnel for the purposes of evaluation (e.g. testing, inspection, assessment, surveillance, reassessment) and resolution of complaints; c)make claims regarding certification only in respect of the scope for which certification has been granted; d)do not use our product certification in such a manner as to bring the Certification Division into disrepute and not make any statement regarding our product certification which the Certification Division may consider misleading or unauthorized; e)upon suspension or cancellation of certification, discontinue use of all advertising matter that contains any reference thereto and return any certification documents as required by the Certification Division; f)use certification only to indicate the products are certified as being in conformity with specified standards; g)endeavor to ensure that no certificate or report nor any part thereof is used in a misleading manner; h)ensure that any reference to our product certification in communication media such as documents, brochures or advertising, complies with the requirements of the Certification Division; i)keep a record of all complaints made known to us relating to the product’s compliance with requirements of the relevant standard and to make these records available to the when requested; j)take appropriate action with respect to such complaints and any deficiencies found in products or services that affect compliance with the requirements for certification; k)document the actions taken. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signed by: Company Name: Hui Zhou Gaoshengda Technology Co.,LTD Contact Name: Hui Guan Title of Person: Manger Address: No.2,Jin-da Road,Huinan High-tech Industrial Park, Huizhou, Guangdong, China

Hui Zhou Gaoshengda Technology Co.,LTD Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Request for Confidentiality FCC ID: 2AC23-WXT5V To Whom It May Concern: Pursuant to the provisions of Sections 0.457 and 0.459 of the Commission’s rules (47 CFR §§ 0.457, 0.459), we are requesting the Commission to withhold the following attachments as confidential document from public disclosure indefinitely. Schematic Diagram Block Diagram Theory of Operation Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Best Regards Company Name: Hui Zhou Gaoshengda Technology Co.,LTD Contact Name: Hui Guan Title of Person: Manger Address: No.2, Jin-da Road, Huinan High-tech Industrial Park, Huizhou, Guangdong, China Date: 06/06/2024

Appendix II Setup Photographs RADIATED RF MEASUREMENT SETUP (ABOVE 1 GHz) MEASUREMENT POSITION MEASUREMENT POSITION (X axis) MEASUREMENT POSITION (Y axis) MEASUREMENT POSITION (Z axis) RADIATED RF MEASUREMENT SETUP (30MHz~1GHz) RADIATED RF MEASUREMENT SETUP (Below 30MHz) POWERLINE CONDUCTED EMISSIONS MEASUREMENT SETUP