2APO6OTTO5B571Bluetooth Speaker

5B571BT5B571BT5B571BT 5B571BT Bluetooth SpeakerBluetooth Speaker Bluetooth Speaker Bluetooth Speaker Model : 5B571BT DC 3.7V from battery or DC 5V from USB port Bluetooth Vertion: BT 5.0 FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment . This transmitter must not be co ‐located or operating in conjunction with any other antenna or transmitter. This equipment should be installed and operated with minimum distance 20cm between the radiator &you body.

SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD Add: RM.101-102,BLDG,F13,F518 IDEA LAND,NO:1065 BAOYUAN RD, XLXLANG AVENUE,BAO-AN,SHENZHEN,CHINA Tel: 86-755-2720 6281 Fax: N/A Email: [email protected] We, SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD , hereby authorize China Certification ICT Co., Ltd (Dongguan) to act as a laboratory for testing and test report generation for the following project(s): (Product name: Bluetooth Speaker, Model name: 5B571BT, FCC ID:2APO6OTTO5B571) The product supports Bluetooth BDR, EDR and BLE Mode, but for this device, BLE was disable by software. Sincerely, Signature: Pr inted Name: Vicky Chen Title: Sales FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: 2023-06-12 To whom it may concern Dear Sir/Madam,

SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD Ad d: RM.101-102,BLDG,F13,F518 IDEA LAND,NO:1065 BAOYUAN RD, XLXLANG AVENUE,BAO-AN,SHENZHEN,CHINA Tel: 86-755-2720 6281 Fax: N/A Email: [email protected] C FR 47 §2.911(d)(5)(i)(ii) Attestation Letter A ttestation Letter Date: 06/06/2023 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:2APO6OTTO5B571 SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD (“the applicant”) certifies that the equipment for which authorization is sought is not “co vered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. SHENZHEN OTTO INTELLIGENCE 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, Signature: Contact Person: Vicky Chen Title: Sales Company Name& Address: SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD& RM.101-102,BLDG,F13,F518 IDEA LAND,NO:1065 BAOYUAN RD, XLXLANG AVENUE, BAO-AN,SHENZHEN,CHINA

CFR 47 §2.911(d)(7) U.S Agent U.S. AGENT LETTER OF ATTESTATION Date: 2023-06-06 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID:2APO6OTTO5B571 SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD (“the Applicant”) certifies that, as of the date of the filing of the application, DGL Group LTD. ( U.S. agent). is our designated U.S. agent for service of process for the above referenced FCC ID. SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD (“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. DGL Group LTD. (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 Informatiom: Company Name: DGL Group LTD. Address: 2045 Lincoln Highway, 3rd Floor, Edison, New Jersey, United States 08817 FRN: 0024048670 Tel.: 001-732-692-5180 Email: [email protected] Signed by (printed name): Amy Chao Signature: Applicant information: Company Name: SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD CFR 47 §2.911(d)(7) U.S Agent Address: RM.101-102,BLDG,F13,F518 IDEA LAND,NO:1065 BAOYUAN RD, XLXLAN G AVENUE,BAO-AN,SHENZHEN,CHINA FRN: 0027478668 Tel.: 86-755-2720 6281 Email: [email protected] Signed by (printed name): Vicky Chen Signature:

QA-FR-170-B SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD Add: RM.101-102,BLDG,F13,F518 IDEA LAND,NO:1065 BAOYUAN RD, XLXLAN G AVENUE,BAO-AN,SHENZHEN,CHINA Tel: 86-755-2720 6281 Fax: N/A Email: [email protected] FCC Authorization Date: 2023-06-06 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We , SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD, Hereby authorizes China Certification ICT Co., Ltd (Dongguan) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by China Certification ICT Co., Ltd (Dongguan) on our behalf shall have the same effect as our own action. We, 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. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Client’s signature Printed Name: Vicky Chen Title: Sales

QA-FR-171-A SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD Ad d: RM.101-102,BLDG,F13,F518 IDEA LAND,NO:1065 BAOYUAN RD, XLXLANG AVENUE, BAO-AN,SHENZHEN,CHINA Tel: 86-755-2720 6281 Fax: N/A Email: [email protected] FCC Con fidential Authorization Date: 06/06/2023 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID:2APO6OTTO5B571 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, (SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD) hereby requests long-term confidential treatment of information accompanying this application as outlined below: •Block Diagram •Schematics •Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely, Signature: Printed name:Vicky Chen Title: Sales

EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS

EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Antenna

China Certification ICT Co., Ltd (Dongguan) Report No.: CR230523341-00A Page 58 of 58 5. RF EXPOSURE EVALUATION 5.1 Applicable Standard According to subpart 15.247(i)and subpart §1.1310, systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091) (B) Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f²) 30 30–300 27.5 0.073 0.2 30 300–1500 / / f/1500 30 1500–100,000 / / 1.0 30 f = frequency in MHz; * = Plane-wave equivalent power density; According to §1.1310 and §2.1091 RF exposure is calculated. Calculation formula: Prediction of power density at the distance of the applicable MPE limit S = PG/4R² = power density (in appropriate units, e.g. mW/cm 2 ); P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); Calculated Data: Frequency (MHz) Antenna Gain Conducted output power including Tune- up Tolerance Evaluation Distance (cm) Power Density (mW/cm 2 ) MPE Limit (mW/cm 2 ) (dBi) (numeric) (dBm)(mW) 2402-2480 1.90 1.55 4.00 2.51 20.00 0.001 1.0 Note: the Conducted output power including Tune-up Tolerance was declared by manufacturer. Result: The device meet FCC MPE at 20 cm distance ===== END OF REPORT =====

Product specification Quick Reference Date Antenna module on the system board Frequenc Range 2400 ~ 2500MHz Ant. Port Input Pwr. (dBm) 0 (Typ. BT class 2 output power) Tot. Rad. Pwr. (dBm) -1.2 (Input pwr – loss pwr) Peak EIRP(dBm) 1.2 Directivity (dBi) 1 (all direction antenna) Efficiency (dB) 6 0.2 % Gain (dBi) 1.2 (Avg Gain XY-plane) Maximum Power (dBm) 1.7 (XY-plane) Minimum Power (dBm) -4(XY-plane) Avg. Power (dBm) -0.5(XY-plane) Input Impendence(ohm) 50 Polarization Type V ertical & Horizontal V . S .W . R < 1.4 All the technical data and information contained herein are subject to change without prior notice Antenna Layout & module on the system board Antenna Gain Gain Table Unit in dBi @2.44GHz XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Module Board 1.2 -0.5 1.9 -3.6 1.1 -3.0 6 0.2 % Manufacturer Zhuhai Jieli Technology Co., Ltd Retum Loss The Environment of Antenna Radiation Pattem 3D radiation pattern diagram XY-plane XZ-plane YZ-plane Antenna type：PCB

TEST REPORT Applicant: SHENZHEN OTTO INTELLIGENCE TECHNOLOGY CO LTD Address: RM.101-102,BLDG,F13,F518 IDEA LAND,NO:1065 BAOYUAN RD, XLXLANG AVENUE,BAO-AN,SHENZHEN,CHINA FCC ID: 2APO6OTTO5B571 Product Name: Bluetooth Speaker Standard(s): 47 CFR Part 15, Subpart C(15.247) ANSI C63.10-2013 KDB 558074 D01 15.247 Meas Guidance v05r02 The above equipment has been tested and found compliant with the requirement of the relative standards by China Certification ICT Co., Ltd (Dongguan) Report Number: CR230523341-00A Date Of Issue: 2023/5/22 Reviewed By: Julie Tan Title: RF Engineer Approved By: Sun Zhong Title: Manager Test Laboratory: China Certification ICT Co., Ltd (Dongguan) No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China Tel: +86-769-82016888 China Certification ICT Co., Ltd (Dongguan) Report No.: CR230523341-00A Page 2 of 58 Test Facility The Test site used by China Certification ICT Co., Ltd (Dongguan) to collect test data is located on the No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China. The lab has been recognized as the FCC accredited lab under the KDB 974614 D01 and is listed in the FCC Public Access Link (PAL) database, FCC Registration No. : 442868, the FCC Designation No. : CN1314. The lab has been recognized by Innovation, Science and Economic Development Canada to test to Canadian radio equipment requirements, the CAB identifier: CN0123. Declarations China Certification ICT Co., Ltd (Dongguan) is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with a triangle symbol “▲”. Customer model name, addresses, names, trademarks etc. are not considered data. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report cannot be reproduced except in full, without prior written approval of the Company. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report may contain data that are not covered by the accreditation scope and shall be marked with an asterisk “★”. China Certification ICT Co., Ltd (Dongguan) Report No.: CR230523341-00A Page 3 of 58 CONTENTS T EST FACILITY .......................................................................................................................................... 2 DECLARATIONS .......................................................................................................................................... 2 DOCUMENT REVISION HISTORY .......................................................................................... 5 1. GENERAL INFORMATION .................................................................................................... 6 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ....................................................... 6 1.2 DESCRIPTION OF TEST CONFIGURATION ........................................................................................... 7 1.2.1 EUT Operation Condition: ............................................................................................................................. 7 1.2.2 Support Equipment List and Details .............................................................................................................. 7 1.2.3 Support Cable List and Details ...................................................................................................................... 7 1.2.4 Block Diagram of Test Setup ......................................................................................................................... 7 1.3 MEASUREMENT UNCERTAINTY .......................................................................................................... 9 2. SUMMARY OF TEST RESULTS .......................................................................................... 10 3. REQUIREMENTS AND TEST PROCEDURES .................................................................. 11 3.1 AC LINE CONDUCTED EMISSIONS .................................................................................................... 11 3.1.1 Applicable Standard ..................................................................................................................................... 11 3.1.2 EUT Setup.................................................................................................................................................... 12 3.1.3 EMI Test Receiver Setup ............................................................................................................................. 12 3.1.4 Test Procedure ............................................................................................................................................. 13 3.1.5 Corrected Amplitude & Margin Calculation ................................................................................................ 13 3.2 RADIATED SPURIOUS EMISSIONS ...................................................................................................... 14 3.2.1 Applicable Standard ..................................................................................................................................... 14 3.2.2 EUT Setup.................................................................................................................................................... 14 3.2.3 EMI Test Receiver & Spectrum Analyzer Setup ......................................................................................... 15 3.2.4 Test Procedure ............................................................................................................................................. 15 3.2.5 Corrected Amplitude & Margin Calculation ................................................................................................ 15 3.3 20 DB EMISSION BANDWIDTH ...........................................…

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EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emissions Front View Conducted Emissions Side View Radiated Emission Below 1GHz View Radiated Emission Above 1GHz View