2AOAA-NGA-8BTMIGHTY 8BT MKII

This equipment should be installed and operated with minimum distance 20cm between the radiator &you body.

ATTESTATION STATEMENT Cherub Technology Co., Ltd ADD: Room507, Block 1, Nanhai E-Cool,No.6 Xinghua Shekou, Nanshan District, shenzhen China TEL: +86 755-26869866 FAX:+86 755-26869866 E-mail: [email protected] Date: 2023-06-25 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d)(5)(i), (ii) Filing FCC ID: 2AOAA-NGA-8BT Cherub 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. Cherub 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, Signed by (printed name): Yanjun Meng Title: Manager Signature:

U.S. AGENT LETTER OF ATTESTATION Date: 2023-06-25 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID:2AOAA-NGA-8BT Cherub Technology Co., Ltd. certifies that, as of the date of the filing of the application, Cherub Technology Inc.is our designated U.S. agent for service of process for the above referenced FCC ID. Cherub Technology Co., Ltd accepts to maintain an agent for no less than one y ear after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Cherub Technology Inc. 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 Information: Company Name: Cherub Technology Inc. Address: 11940 Goldring Rd Ste C Arcadia, CA 91006 United States FRN: 0033408527 Tel.: (626) 357-1275 Email: [email protected] Signed by (printed name):Jian Xu Sig nature: Applicant: Cherub Technology Co., Ltd Address: Room507, Block 1, Nanhai E-Cool,No.6 Xinghua Shekou, Nanshan District, shenzhen China FRN: 0026997007 Tel: +86 755-26869866 FAX:+86 755-26869866 Email:[email protected] Signed by (printed name): Yan jun Signature:

Cherub Technology Co., Ltd ADD: Room507, Block 1, Nanhai E-Cool,No.6 Xinghua Shekou, Nanshan District, shenzhen China TEL: +86 755-26869866 FAX:+86 755-26869866 E-mail: [email protected] F CC Authorization Date: 2023-06-25 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We , Cherub 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: Yanjun Meng Title: Manager QA-FR-170-B

QA-FR-171-A Cherub Technology Co., Ltd ADD: Room507, Block 1, Nanhai E-Cool,No.6 Xinghua Shekou, Nanshan District, shenzhen China TEL: +86 755-26869866 FAX:+86 755-26869866 E-mail: [email protected] FCC Confidential Authorization Date:2023-06-25 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2AOAA-NGA-8BT In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, (Cherub 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: Yanjun Meng Title: Manager

EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS EUT

Label &location

EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Bluetooth Module Bluetooth Antenna

China Certification ICT Co., Ltd (Dongguan) Report No.: CR230634215-00A Page 49 of 49 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); 5.2 Measurement Result Mode Frequency (MHz) Antenna Gain Conducted output power including Tune-up Tolerance Evaluation Distance Power Density MPE Limit (dBi) (numeric)(dBm)(mW) (cm) (mW/cm2) (mW/cm 2 ) BT 3.0 2402-2480 1.54 1.43 3 2.00 20 0.001 1 BLE 2402-2480 1.54 1.43 3 2.00 20 0.001 1 Result: The device meets FCC MPE at 20 cm distance ===== END OF REPORT ====

Inverted F Antenna Specification Item Antenna Specification Model Name 2.4G ANT Gain 2400MHz 2450MHz 2500MHz 1.33dBi 1.50dBi 1.18dBi Efficiency 70.24% 72.27% 63.66% Impedance 50 ohm Antenna Length 14.4mm Manufacture Actions (Zhuhai) Technology Co., Limited Antenna Dimensions S11 Efficiency & Gain Frequency (MHz) Efficiency (dB) Efficiency (%) Gain (dBi) 2400 -1.53 70.24 1.33 2402 -1.53 70.34 1.31 2405 -1.52 70.51 1.33 2410 -1.49 71.01 1.33 2415 -1.50 70.82 1.32 2420 -1.46 71.47 1.41 2425 -1.45 71.57 1.37 2430 -1.43 71.89 1.39 2435 -1.44 71.70 1.34 2440 -1.40 72.38 1.47 2441 -1.40 72.44 1.51 2445 -1.40 72.42 1.44 2450 -1.41 72.27 1.50 2455 -1.45 71.60 1.53 2460 -1.44 71.82 1.51 2465 -1.50 70.76 1.54 2470 -1.56 69.76 1.48 2475 -1.59 69.35 1.46 2480 -1.67 68.13 1.47 2482 -1.71 67.50 1.43 2485 -1.76 66.65 1.33 2490 -1.82 65.75 1.31 2495 -1.91 64.44 1.29 2500 -1.96 63.66 1.18 3D Radiation Pattern Front View Side View Total Response (dB) -16 2 -14 -12 -10 -8 -6 -4 -2 0 X Y Z Azimuth = 0.0 Elevation = 0.0 Roll = 0.0 Total Response (dB) -16 2 -14 -12 -10 -8 -6 -4 -2 0 X Y Z Azimuth = 0.0 Elevation = 0.0 Roll = 90.0 Configuration Front View Side View

TEST REPORT Applicant: Cherub Technology Co., Ltd Address: Room507, Block 1, Nanhai E-Cool, No. 6 Xinghua Road, Shekou, Nanshan District, Shenzhen City, Guangdong Province, China, 518067 FCC ID: 2AOAA-NGA-8BT Product Name: MIGHTY 8BT MKII 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: CR230634215-00A Date Of Issue: 2023/6/25 Reviewed 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.: CR230634215-00A Page 2 of 49 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.: CR230634215-00A Page 3 of 49 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 ......................................................................................................................... 8 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 RADIATION 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 6 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