FCC ID: 2AK8Q-TKKB004 Wireless Keyboard

Label location Size:10*5mm FCC ID:2AK8Q-TKKB004 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 cause undesired operation

Shenzhen Unichain Technology Co., Ltd 2024.04.10 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize Shenzhen BCTC Testing 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 : Zhiying Lan /Manager Contact information / address: 201, 111-3, Huangjinshan District, Bantian Community, Bantian Street, Longgang District, Shenzhen, China

Shenzhen Unichain Technology Co., Ltd 2024.04.10 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: 2AK8Q-TKKB004

[Shenzhen Unichain 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) Zhiying Lan Shenzhen Unichain Technology Co., Ltd 2024.04.10 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: 2AK8Q-TKKB004

[Shenzhen Unichain 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) Zhiying Lan

Shenzhen Unichain Technology Co., Ltd 2024.04.10 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Wireless Keyboard Trademark: TECKNET/TECHRISE MODEL : TK-KB004 TR-KB004, TK-KB007, TR-KB007, TK-KB008/TR-KB008, TK-KB009, TR-KB009, TK-KB010, TR-KB010, TK-KM007, TR-KM007, TK-KM008, TR-KM008, TK-KM009, TR-KM009, TK-KM006 FCC ID : 2AK8Q-TKKB004 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. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Clients signature:

Clients name / title : Zhiying Lan /Manager Contact information / address: 201, 111-3, Huangjinshan District, Bantian Community, Bantian Street, Longgang District, Shenzhen, China

Shenzhen Unichain Technology Co., Ltd Model Difference 2024/04/10 EUT NAME: Wireless Keyboard Trademark: TECKNET/TECHRISE FCC ID: 2AK8Q-TKKB004 MODEL : TK-KB004 TR-KB004, TK-KB007, TR-KB007, TK-KB008/TR-KB008, TK-KB009, TR-KB009, TK-KB010, TR-KB010, TK-KM007, TR-KM007, TK-KM008, TR-KM008, TK-KM009, TR-KM009, TK-KM006 All the model are the same circuit and RF module, except appearance color and model name. Regards Sincerely Clients signature:

Clients name / title : Zhiying Lan /Manager Contact information / address: 201, 111-3, Huangjinshan District, Bantian Community, Bantian Street, Longgang District, Shenzhen, China

Shenzhen Unichain Technology Co., Ltd U.S. Agent Designation for Service of Process

(Applicant and U.S. Agent are Separate Parties) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA ATTENTION: FCC Certification Section 2.911(d)(7) Information Designated U.S. Agent Company Name: AOCE Corporation Inc. FRN: 0033401381 Contact Name: Johnson.wang Address: 6547 N Academy Bivd #2266, Colorado Springs, CO,80918 United States Telephone No: +1-346-582-5234 Email: wwbj2008@126.com This letter is to confirm that we (the Designated U.S. Agent) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. U.S. Agent Signature:

Date:

Signed by (Printed Name/Title):

The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation OR the conclusion of any Commission-related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Company name: Shenzhen Unichain Technology Co., Ltd FCC ID: 2AK8Q-TKKB004 FRN: 0026283903 Contact Name: Zhiying Lan Address: 201, 111-3, Huangjinshan District, Bantian Community, Bantian Street, Longgang District, Shenzhen, China Telephone No: +86-18126547769 Email: ethan.w@uni-chain.com Applicant Signature:

Date: 2024-04-10 Signed by (Printed Name/Title): Zhiying Lan/Manager