FCC ID: 2AU4P-BTS121 Bluetooth Speaker with Power Bank

TennRich International Corp. DateApr.17.2024 Product Model Number: BTS121 FCC ID2AU4P-BTS121 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following:

Testing Approval applications and procedures We declare that ORGANIZATION. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by ORGANIZATION. on our behalf shall have the same effect as acts of our own. By:

Contact Listed on FCC Wesbite Title: Certification Commissioner Email: leslie_chang@tennrich.com.tw Telephone: 886-3-3124888-1809 On behalf of: TennRich International Corp.

TennRich International Corp. U.S. Agent Designation for Service of Process

(Applicant and U.S. Agent are Separate Parties) TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTENTION: FCC Certification Section 2.911(d)(7) Information Designated U.S. Agent Company Name: TennRich America Inc. FRN: 0033974395 Contact Name: Mr Jamal Chen Street Address: 3333 S. Brea Canyon Road, #206 Diamond Bar City/Province/Zip: CA 91765 United States Telephone No: (626) 665-4100 Email: po@tennrich.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: Apr.16.2024 Signed by (Printed Name/Title): Mr Jamal Chen/Sales Manager 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: TennRich International Corp. FRN: 0028973394 Grantee Code: 2AU4P FCC ID: 2AU4P-BTS121 Contact Name: Yuna Hung Street Address: 1-3, Alley 5, Lane 305, Sec 1,Shin Nan Road, Lu Chu District,Taoyuan,Taiwan,China Telephone No: 886-3-3124888-1809 Email: leslie_chang@tennrich.com.tw Applicant Signature:

Date: Apr.16.2024 Signed by (Printed Name/Title): Yuna Hung/Certification Commissioner

Summary ITEM Model Name Center Frequency MAX. Gain Polarization Azimuth Beam Pattern Impedance Antenna Length Manufacture Address Inverted F Antenna Specification Antenna type: PCB Antenna ANT SPEC 2.4G ANT Horizontal Vertical 2400MHz 2400MHz 2500MHz 2400MHz 2400MHz 2500MHz

-1.26

-0.76

-0.58

-5.25

-2.46

-1.86

-0.58dB Horizontal and Vertical Omni-directional 50 Ohm 15.20mm TENNRICH INTERNATIONAL CORP. 1-3, Alley 5, Lane 305, Sec 1,Shin Nan Road, Lu Chu District, Taoyuan,Taiwan,China Antenna Photo & Length (mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Frequency

(MHz) 2400 2450 2500 Gain(dB) Min

-30.0801

-36.5604

-22.0315 Max

-1.26174

-0.765802

-0.585582 Avg

-7.18716

-7.48023

-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Frequency

(MHz) 2400 2450 2500 Gain(dB) Min

-22.1424

-24.5837

-29.5214 Max

-5.2537

-2.4652

-1.86120 ANT Test LabsAttestation of Global Compliance Co., Ltd. Avg

-12.4294

-10.4702

-9.20432

TennRich International Corp. Address: 1-3, Alley 5, Lane 305, Sec 1,Shin Nan Road, Lu Chu District,Taoyuan,Taiwan,China Date: 2024-04-16 Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing SUBJECT: FCC Application for FCC ID: 2AU4P-BTS121 To Whom It May Concern:

TennRich International Corp. 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, Signature:

Date: 2024-04-15

TennRich International Corp. Address: 1-3, Alley 5, Lane 305, Sec 1,Shin Nan Road, Lu Chu District,Taoyuan,Taiwan,China Date: 2024-04-16 Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing SUBJECT: FCC Application for FCC ID: 2AU4P-BTS121 To Whom It May Concern:

TennRich International Corp.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:

Date: 2024-04-15

TennRich International Corp. 1-3, Alley 5, Lane 305, Sec 1,Shin Nan Road, Lu Chu District,Taoyuan,Taiwan,China Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: 2AU4P-BTS121 To Whom It May Concern, Date: April 16, 2024 Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure Software Security Requirements for UNII devices In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: Yuna Hung Title: Certification Commissioner