2ATKM-V900BTCar Diagnostic Instrument

User Manual ENG Diagnosis AT Diagnosis ABS Diagnosis SRS Diagnosis Product Description Main Functions This product is mainly used for reading automotive engines/ transmissionsABSAirbag system malfunction, clear the fault code and read the OBD system data stream. This product can monitor and diagnose the health status of vehicles, display detailed reasons for vehicle malfunction lights, read and clear fault codes, record vehicle travel data, AI intelligent diagnosis, and deeply detect car faults. Search for OBD Interface The OBD interface may be located in different positions on different vehicle models. (Usually located on the lower side of the dashboard on the driver's side of the car, above the accelerator pedal) Insert the product into the OBD interface and start the car. Software Download Android systemiOS system 1. Use a mobile browser to scan the QR code below. 2. You can also search for the software name "INNOOBD " on Google Play or Apple Store to download it. + Connect products 1. Insert the product into the car OBD interface and start the car, ensuring that the product indicator light is on. 2. Turn on Bluetooth on your phone 3. Open the software to automatically connect. Note: Starting from Android 6.0, you need to enable location permission to search for Bluetooth devices! 1. Please turn on Bluetooth and GPS in the mobile control center 2. Enable location permissions and select (only allowed when using this application). Approximate locationAccurate position Only allowed when using this application 3. Enable nearby device permissions and select (Yes). After the above preparations are ready, open the software and automatically connect to the OBD device. Do you want to allow INNOOBD+ to search for, connect to nearby devices, and determine the relative location of nearby devices? Ye s No Connection completed The following interface will be displayed when the connection is successful. You can click the 'Reconnect' button to connect. Connection failed Select the device name 'AVAPOW-V900-BT' to complete the manual connection. If the connection cannot be established, please confirm that the vehicle is running, reinsert the product, and re-enter the app to connect. If the connec- tion still fails after all the above operations, then the vehicle does not support detection. Warning Statement 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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: GLOCERTS TECHNOLOGY INC FRN: 0036339737 Contact Name: Huiying Fan Address: 19784 SUNKISSED RIDGE DR, RIVERSIDE, CA 92507 Telephone (626) 588-8039 Email: [email protected] This letter is to confirm that the US Agent for Service of Process accepts responsibility to act as a local representative on behalf of Shenzhen Chaoyue Technology Development Co.,Ltd. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Applicant: Company name: Shenzhen Chaoyue Technology Development Co.,Ltd. FRN: 0028543692 Grantee code: 2ATKM FCC ID:2ATKM-V900BT Contact Name: Junmin Chen Address: Building C, Zhiyun Industrial Park, No. 13 Huaxing Road, Tongsheng Community, Dalang Street, Longhua District, Shenzhen Telephone No: +86 18664973120 Fax No: 0755-25865849 Email: [email protected] The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 2026/08/11 Applicant’s Name: Junmin Chen US Agent for Service of Process’s Name: Huiying Fan Title: Manager Title: Director Signature: Signature:

(Shenzhen Chaoyue Technology Development Co.,Ltd.) (2026-08-11) 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:2ATKM-V900BT) [Shenzhen Chaoyue Technology Development 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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, (Applicant signature): (Applicant printed name): Junmin Chen (Shenzhen Chaoyue Technology Development Co.,Ltd.) (2026-08-11) 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:2ATKM-V900BT) [Shenzhen Chaoyue Technology Development 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): Junmin Chen

Shenzhen Chaoyue Technology Development Co.,Ltd. Agent Authorization Letter (2026/08/11) 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 (MAXLAB 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, Client’s signature : Client’s name / title : Junmin Chen / Manager Contact information / address: Building C, Zhiyun Industrial Park, No. 13 Huaxing Road, Tongsheng Community, Dalang Street, Longhua District, Shenzhen

Shenzhen Chaoyue Technology Development Co.,Ltd. Long Term Confidentiality Request Letter (2026-08-11) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR(Car Diagnostic Instrument / V900-BT / FCC ID:2ATKM-V900BT) 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, Client’s signature : Client’s name / title : Junmin Chen / Manager Contact information / address: Building C, Zhiyun Industrial Park, No. 13 Huaxing Road, Tongsheng Community, Dalang Street, Longhua District, Shenzhen

1cm The label is displayed on the EUT by laser engraving. Label Location Model: V900-BT FCC ID: 2ATKM-V900BT 0.5cm

TX ANT

FCC ID:2ATKM-V900BT RF Exposure Evaluation According to KDB 447498 D01 V06 and part 2.1093，Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f (GHz) ] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where f (GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison EIRP=E Meas +20log(d Meas )-104.7 EIRP is the equivalent isotropically radiated power, in dBm E Meas is the field strength of the emission at the measurement distance, in dBμV/m d Meas is the measurement distance, in m Here, For BT Field strength (dBuV/m) EIRP (dBm) Max tune-up (mW) Frequency (MHz) Min. distance(mm) Calc. thresholds limit 98.86 2.402 2.189 2402 5 0.678 3.0 MPE=2.189 mw / 5mm * √(2.402GHz) = 0.678 EIRP=E Meas +20log(dMeas)-104.7=98.86+9.542-104.7=3.702dBm Conducted Power= EIRP-ANT Gain =3.702dBm –(1.3)=2.402dBm Max tune-up=2.402dBm±1=3.402dBm=2.189mW Note1: the antenna gain is 1.3dBi; So a SAR test is not required.

Page 1 of 27 MAXLAB Testing Co.,Ltd. Report No.: MAX26080413P01-R01 FCC PART 15 SUBPART C TEST REPORT FCC PART 15.249 Report Reference No. ..................... :MAX26080413P01-R01 FCC ID. ............................................ :2ATKM-V900BT Compiled by ( position+printed name+signature) .. : Engineer/ Cindy Zheng Supervised by ( position+printed name+signature) .. : Manager/Haley Wen Approved by ( position+printed name+signature) .. : RF Manager/ Vivian Jiang Date of issue ..................................... :August 06, 2026 Testing Laboratory Name .............. : MAXLAB Testing Co.,Ltd. Address ............................................ : 1/F, Building B, Xinshidai GR Park,Shiyan Street, Bao'an District, Shenzhen,Guangdong, 518052, People’ s Republic of China Applicant’s name ............................ : Shenzhen Chaoyue Technology Development Co., Ltd. Address ............................................ : Building C, Zhiyun Industrial Park, No. 13 Huaxing Road, Tongsheng Community, Dalang Street, Longhua District, Shenzhen Test specification ...........................: Standard ........................................... : FCC CFR Title 47 Part 15 Subpart C Section 15.249 ANSI C63.10:2020 MAXLAB Testing Co.,Ltd.All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the MAXLAB Testing Co.,Ltd. is acknowledged as copyright owner and source of the material. MAXLAB Testing Co.,Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Equipment description...................: Car Diagnostic Instrument Brand Name ..................................... : AVAPOW Manufacturer .................................... : Shenzhen Chaoyue Technology Development Co., Ltd. Model/Type reference....................... :V900-BT Listed Models .................................. : N/A Modulation ....................................... :GFSK Frequency ..........................................From 2402MHz to 2480MHz Ratings ............................................. :DC9-16V from battery Result................................................ : PASS Page 2 of 28 MAXLAB Testing Co.,Ltd. Report No.: MAX26080413P01-R01 TEST REPORT Equipment under Test : Car Diagnostic Instrument Model /Type : V900-BT Listed Models : N/A Model Declaration : N/A Applicant : Shenzhen Chaoyue Technology Development Co., Ltd. Address : Building C, Zhiyun Industrial Park, No. 13 Huaxing Road, Tongsheng Community, Dalang Street, Longhua District, Shenzhen Manufacturer : Shenzhen Chaoyue Technology Development Co., Ltd. Address : Building C, Zhiyun Industrial Park, No. 13 Huaxing Road, Tongsheng Community, Dalang Street, Longhua District, Shenzhen Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Page 3 of 28 MAXLAB Testing Co.,Ltd. Report No.: MAX26080413P01-R01 Contents 1 T E S T S T A N D A R D S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 S U M M AR Y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Equipment Under Test 5 2.4 Short description of the Equipment under Test (EUT) 5 2.5 EUT operation mode 6 2.6 Block Diagram of Test Setup 6 2.7 Related Submittal(s) / Grant (s) 6 2.8 Modifications 6 3 T E S T E N V I R O N M E N T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.1 Address of the test laboratory 7 3.2 Test Facility 7 3.3 Environmental conditions 7 3.4 Summary of measurement results 8 3.5 Statement of the measurement uncertainty 8 3.6 Equipments Used during the Test 9 4 T E S T C O N D I T I O N S A N D R E S U L T S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 4.1 AC Power Conducted Emission 11 4.2 Radiated Emissions and Band Edge 12 4.3 Bandwidth of Frequncy Band Edge 15 4.4 Channel Bandwidth 22 4.5 Antenna Requirement 25 5 T E S T S E T U P P H O T O S O F T H E E U T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 7 6 P H O T O S O F T H E E U T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8 Page 4 of 28 MAXLAB Testing Co.,Ltd. Report No.: MAX26080413P01-R01 1 T E S T S T A N D A R D S The tests were performed according to following standards: FCC Rules Part 15.249: Frequency Hopping, Direct Spread Spectrum and Hybrid Systems that are in operation within the bands of 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz and 24.0-24.25 GHz ANSI C63.10-2020: American National Standard for Testing Unlicensed Wireless Devices Page 5 of 28 MAXLAB Testing Co.,Ltd. Report No.: MAX26080413P01-R01 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample : July 27, 2026 Testing commenced on : July 27, 2026 Testing concluded on : August 06, 2026 2.2 Product Description Product Description: Car Diagnostic Instrument Model/Type reference: V900-BT Listed Models: N/A Power supply: DC9-16V from battery Adapter information (Optional accessories) (Supply by Lab) N/A Battery: N/A Testing sample ID： MAX26080413P01-R01-1# (Engineer sample), MAX26080413P01-R01-2# (Normal sample) BLE Supported type: 2.4G Modulation: GFSK Operation frequency: 2402MHz to 2480MHz Channel number: 40 Channel separation: 2MHz Antenna type: PCB antenna Antenna gain: 1.3dBi 2.3 Equipment Under Test Power supply system utilised Power supply voltage : ○ 230V / 50 Hz ○ 120V / 60Hz ● 12 V DC ○ 24 V DC ○ Other (specified in blank below) DC 12V 2.4 Short description of …

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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) -2 Directivity (dBi) 1 (all direction antenna) Efficiency (dB) 60.2 % Gain (dBi) 1.3 (Peak Gain XZ-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 Vertical & 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 1.3 -0.5 1.1 -3.8 1.1 -3.0 4.2 % Retum Loss The Environment of Antenna Radiation Pattem 3D radiation pattern diagram XY-plane XZ-plane YZ-plane Far-field Power Distribution(H+V) on X-Y Plane Plot Peak Gain(H+V)= 1.3dBi; Plot Avg Gain(H+V)= [email protected] Far-field Power Distribution(H+V) on X-Z Plane Plot Peak Gain(H+V)= 1.1dBi; Plot Avg Gain(H+V)= [email protected] Far-field Power Distribution(H+V) on Y-Z Plane Plot Peak Gain(H+V)= 1.1dBi; Plot Avg Gain(H+V)= [email protected]

Test Setup Photograph Radiated Emissions Test Setup Below 1G Above 1G