FCC ID: 2BFI5-DF16 Helmet Soun d Field Hearing Equipment

Shenzhen Nuoyakang Technology Co.,Ltd.

(March 22, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology 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, Signature:

Name: Hongfu Liu Title: Manager

(Shenzhen Nuoyakang Technology Co.,Ltd.)

(March 22, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BFI5-DF16)

[Shenzhen Nuoyakang Technology Co.,Ltd.] (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. Sincerely,

(Applicant signature)

(Applicant printed name) Hongfu Liu

(Shenzhen Nuoyakang Technology Co.,Ltd.)

(March 22, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2BFI5-DF16)

[Shenzhen Nuoyakang Technology Co.,Ltd.] (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,

(Applicant signature)

(Applicant printed name) Hongfu Liu

Shenzhen Nuoyakang Technology Co.,Ltd.

(March 22, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Helmet Soun d Field Hearing Equipment / DF16, DF17, DF18, DF19 / FCC ID: 2BFI5-DF16) 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 Exhibits ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos Users Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) SDR Software / Security Info Long-Term Confidentiality Short-Term Confidentiality NOTE 2 No No No No No NOTE 1 NOTE 1 No No No No No No No No required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Signature:

Name: Hongfu Liu Title: Manager

Shenzhen Nuoyakang Technology Co.,Ltd. DataMarch 22, 2024 Model Difference Product description: Helmet Soun d Field Hearing Equipment Model name: DF16, DF17, DF18, DF19 Trade Name: Noyoconn FCC ID: 2BFI5-DF16 All the model are the same circuit and RF module, except model names . Regards Sincerely Clients signature :

Clients name / title : Hongfu LiuManager Contact information / address3r Floor B Block Huaze industrial Park108#

Zhoushi Road Shiyan Street Ban' an Shenzhen, China

Attestation Statements

(March 22, 2024) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID: 2BFI5-DF16 )

(Shenzhen Nuoyakang Technology Co.,Ltd.), the undersigned, hereby authorize

(NEWENERGYER LIMITED) to act as our designated U.S. agent for service of process,

(Shenzhen Nuoyakang Technology Co.,Ltd.) 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.

(NEWENERGYER LIMITED) accepts the responsibility to act as designated U.S. agent for service of process, provides 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. Applicant Information Company name: Shenzhen Nuoyakang Technology Co.,Ltd. Contact Name: Hongfu Liu Address: 3r Floor B Block Huaze industrial Park108# Zhoushi Road Shiyan Street Ban' an Shenzhen, China Telephone No: 13538214502 Email: wh_lab@126.com FRN: 0035156553 Signature [Hongfu Liu]

U.S. Agent Information:

Company Name: NEWENERGYER LIMITED Address: 1818 S Patton Ct, Denver, CO, 80219 Contact Name: CHUN LIU Telephone No: 213 289 5042 Email: newenergyer@outlook.com FRN: 0034665885 Signature [CHUN LIU]