2AO73OBDGOG1Automotive Function Expansion Tool

ShenZhen Eucleia Technology Co.,Ltd Covered Equipment Certification Attestation Letter 11/19/2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2AO73OBDGOG1 ShenZhen Eucleia 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. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. ShenZhen Eucleia 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 a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. ShenZhen Eucleia Technology Co.,Ltd (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Signed: Printed name: Micheal Li Title: CEO Company Name: ShenZhen Eucleia Technology Co.,Ltd Date: 11/19/2025

ShenZhen Eucleia Technology Co.,Ltd * the applicant must designate a contact located in the United States for purposes of acting as the appl icant’s agent for service of process, regardless of whether the applicant is a domestic or forei gn ent ity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter 11/19/2025 TO : Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2AO73OBDGOG1 FRN of applicant: 0027329481 Per section 2.911(d)(7) of the FCC rules, [ ShenZhen Eucleia Technology Co.,Ltd] (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: C ompany Name: FCC US Agent, LLC FCC Registration Number (FRN): 0033402884 Physical U.S. Company Address: 3722 Illinois Avenue, Saint Charles, IL 60174, USA Contact Person: Tim Payne Agent Email Address: [email protected] The abov e contact person accepts the obligation for service of process. The appl icant 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. A pplicant Signed: Agent Signed (if different from Applicant): Signed: Printed name: Micheal Li Title: CEO Company Name: ShenZhen Eucleia Technology Co.,Ltd Date: 11/19/2025 S igned: Printed name: Tim Payne Title: Manager Company Name: FCC US Agent, LLC Date: 11/19/2025

DATE 11/19/2025 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: ___ 2AO73OBDGOG1 ______ Product Name: ___ Automotive Function Expansion Tool___ Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commission’s rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality – for example ...) • Schematics • Block diagram • Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Signed: Printed name: Micheal Li Title: CEO Company Name: ShenZhen Eucleia Technology Co.,Ltd Date: 11/19/2025

DATE : 11/19/2025 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AO73OBDGOG1 Product Name: Automotive Function Expansion Tool Request for Short-Term Confidentiality Pursuant to Sections 0.457 and 0.459 of the commission rules, and in accordance with the FCC Public notice dated June 15, 2004 (DA 04-1705), we hereby request short-term confidentiality for the following items prior to marketing the device.:  Test Setup Photos  External Photos  Internal Photos  User Manual The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Signed: Printed name: Micheal Li Title: CEO Company Name: ShenZhen Eucleia Technology Co.,Ltd Date: 11/19/2025

DATE: 11/19/2025 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen EU Testing Laboratory Limited (101, Building B1, Fuqiao Fourth Area, Qiaotou Community Fuhai Subdistrict Baoan District,Shenzhen,China) (Name of Agent company name and address) to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with ShenZhen Eucleia Technology Co.,Ltd (4th Floor, Building D, Huafeng Industrial Zone, Hangcheng Road, XixiangTown, Baoan District, Shenzhen, China ) (Applicant Name and address) Signed: Printed name: Micheal Li Title: CEO Company Name: ShenZhen Eucleia Technology Co.,Ltd Date: 11/19/2025

Date 11/19/2025 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Compliance Testing, LLC 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). Sincerely, Signed: Printed name: Micheal Li Title: CEO Company Name: ShenZhen Eucleia Technology Co.,Ltd Date: 11/19/2025

ShenZhen Eucleia Technology Co.,Ltd Declaration on Model Differences We, ShenZhen Eucleia Technology Co.,Ltd 4th Floor, Building D, Huafeng Industrial Zone, Hangcheng Road, XixiangTown, Baoan District, Shenzhen, China Declare that the following product(s): Product Name: Automotive Function Expansion Tool Model No.: OBDGO G1, X1, A1PLUS, A1, A1Pro, A1CANFD, A2, A2PLUS, A2Pro, A2CANFD FCC ID: 2AO73OBDGOG1 All models are same with electrical parameters and internal circuit structure, but only differ in appearance color and model name. Therefore, the (OBDGO G1) model will be the primary test model. The manufacturer would take all the responsibilities for the above product(s). For and on behalf of Baoan District, Shenzhen, China Authorized person Location Name: Micheal Li Position: CEO Date of issue: 2025-11-19 *I hereby declare that I am entitled to sign on behalf of the applicant and that the information supplied is correct and complete.

Label Location Label Size: 30*15mm Model No.: OBDGO G1 FCC ID: 2AO73OBDGOG1

RF EXPOSURE EVALUATION According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in KDB 447498 D01 V06 and §1.1307(b) CFR Title 47 §2.1091(b): (b) For purposes of this section, a mobile device is defined as a transmitting device designed to be used in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter’s radiating structure(s) and the body of the user or nearby persons. FCC ID: 2AO73OBDGOG1 EUT Specification EUT Automotive Function Expansion Tool Frequency band (Operating) WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.24GHz WLAN: 5.745GHz ~ 5.825GHz Others: 2.402GHz~2.480GHz BT NFC: 13.56MHz RFID: 125kHz Device category Portable (<20cm separation) Mobile (>20cm separation) Others ___ Exposure classification Occupational/Controlled exposure (S = 5mW/cm2) General Population/Uncontrolled exposure (S=1mW/cm2) Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Evaluation applied MPE Evaluation SAR Evaluation Limits for Maximum Permissible Exposure(MPE) Note: Emissions between 100 kHz to 300 kHz should be assessed versus the limits at 300 kHz in Table 1 of Section 1.1310: 614 V/m and 1.63 A/m.AKDB inquiry is required to determine the applicable exposure limits below 100 kHz. Friis transmission formula: Pd=(Pout*G)\(4*pi*R2) Where Pd= Power density in mW/cm 2 Pout=output power to antenna in Mw G= gain of antenna in linear scale Pi=3.1416 R= distance between observation point and center of the radiator in cm Pd the limit of MPE, 1mW/cm2. If we know the maximum gain of the antenna and total power input to the antenna, through the calculation, we will know the distance where the MPE limit is reached. Measurement Result BLE worst case: Operating Mode Channel Frequency Measured Power Tune up tolerance Max. Tune up Power Antenna Gain Power density at 20cm Power density Limits (mW/cm 2 ) (MHz) (dBm) (dBm) (dBm) (dBi) (mW/ cm 2 ) 1M 2402 -0.34 -0.34±1 0.66 0.37 0.0003 1 Test Result: Pass

TEST REPORT Report No.: 8334EU010801W Applicant: ShenZhen Eucleia Technology Co.,Ltd Address: 4th Floor, Building D, Huafeng Industrial Zone, Hangcheng Road, XixiangTown, Baoan District, Shenzhen, China Product Name: Automotive Function Expansion Tool Model No.: OBDGO G1 (refer to clause 2.4) Trademark: N/A FCC ID: 2AO73OBDGOG1 Test Standard(s): 47 CFR Part 15 Subpart C Test Result: Pass Date of Receipt: Sep. 08, 2025 Test Date: Sep. 08, 2025 – Sep. 25, 2025 Date of Issue: Sep. 30, 2025 ISSUED BY: SHENZHEN EU TESTING LABORATORY LIMITED Prepared by: Reviewed and Approved by: ____________________ _____________________ Mikey Zhu/ Engineer Sally Zhang/ Manager Page 2 of 30 Report No.: 8334EU010801W TRF No.: FCC Part 15 Subpart C_BLE (A02) Revision Record Report Version Issued Date Description Status V0 Sep. 30, 2025 Original Valid Page 3 of 30 Report No.: 8334EU010801W TRF No.: FCC Part 15 Subpart C_BLE (A02) Table of Contents 1 COVER PAGE .................................................................................................................................. 1 2 GENERAL INFORMATION ...................................................................................................................... 5 2.1 APPLICANT INFORMATION .................................................................................................................. 5 2.2 MANUFACTURER INFORMATION .......................................................................................................... 5 2.3 FACTORY INFORMATION ..................................................................................................................... 5 2.4 GENERAL DESCRIPTION OF E.U.T. ..................................................................................................... 5 2.5 TECHNICAL INFORMATION OF E.U.T. .................................................................................................. 6 3 TEST SUMMARY ...................................................................................................................................... 7 3.1 TEST STANDARD ............................................................................................................................... 7 3.2 TEST VERDICT ................................................................................................................................... 7 3.3 TEST LABORATORY ........................................................................................................................... 7 4 TEST CONFIGURATION .......................................................................................................................... 8 4.1 TEST ENVIRONMENT .......................................................................................................................... 8 4.2 TEST EQUIPMENT .............................................................................................................................. 8 4.3 DESCRIPTION OF SUPPORT UNIT ........................................................................................................ 9 4.4 TEST MODE ...................................................................................................................................... 9 4.5 DESCRIPTION OF CALCULATION ......................................................................................................... 9 4.6 MEASUREMENT UNCERTAINTY ......................................................................................................... 10 4.7 DEVIATION FROM STANDARDS ......................................................................................................... 10 4.8 ABNORMALITIES FROM STANDARD CONDITION ................................................................................. 10 5 TEST ITEMS ........................................................................................................................................... 11 5.1 ANTENNA REQUIREMENT .................................................................................................................. 11 5.1.1 Test Requirement ........................................................................................................... 11 5.1.2 Antenna Anti-Replacement Construction ........................................................................ 11 5.1.3 Antenna Gain .................................................................................................................. 11 5.2 CONDUCTED EMISSION AT AC POWER LINE ..................................................................................... 12 5.2.1 Test Requirement ........................................................................................................... 12 5.2.2 Test Setup Diagram ........................................................................................................ 12 5.2.3 Test Procedure ............................................................................................................... 12 5.2.4 Test Data......................................................................................................................... 12 5.3 DTS BANDWIDTH ............................................................................................................................ 13 5.3.1 Test Requirement ........................................................................................................... 13 5.3.2 Test Setup Diagram ........................................................................................................ 13 5.3.3 Test Procedure ............................................................................................................... 13 5.3.4 Test Data......................................................................................................................... 13 5.4 MAXIMUM CONDUCTED OUTPUT POWER .......................................................................................... 14 5.4.1 Test Requirement ....…

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Page 1 of 23 Report No.: 8334EU010801W-AD ANNEX D TEST DATA For Project No.: 8334EU010801W Client: ShenZhen Eucleia Technology Co.,Ltd Product Description: Automotive Function Expansion Tool Model No.: OBDGO G1 FCC ID: 2AO73OBDGOG1 Technology: Bluetooth BLE Test Engineer: Test Date: 2025-09-24 Page 2 of 23 Report No.: 8334EU010801W-AD Test Summary Item Result Duty Cycle Pass Bandwidth Pass Maximum Conducted Output Power Pass Maximum Power Spectral Density Pass Unwanted Emissions In Non-restricted Frequency Bands Pass Page 3 of 23 Report No.: 8334EU010801W-AD 1. Duty Cycle 1.1 Test Result 1.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) Max. DC Variation (%) 1M SISO 2402 2.094 3.125 67.01 1.74 16.78 Page 4 of 23 Report No.: 8334EU010801W-AD 1.2 Test Graph 1.2.1 Ant1 1M_LCH_2402MHz_Ant1_NTNV Page 5 of 23 Report No.: 8334EU010801W-AD 2. Bandwidth 2.1 Test Result 2.1.1 OBW Mode TX Type Frequency (MHz) ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit 1M SISO 2402 1 1.017 / Pass 2440 1 1.019 / Pass 2480 1 1.019 / Pass 2.1.2 6dB BW Mode TX Type Frequency (MHz) ANT 6dB Bandwidth (MHz) Verdict Result Limit 1M SISO 2402 1 0.651 >=0.5 Pass 2440 1 0.643 >=0.5 Pass 2480 1 0.643 >=0.5 Pass Page 6 of 23 Report No.: 8334EU010801W-AD 2.2 Test Graph 2.2.1 OBW 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV Page 7 of 23 Report No.: 8334EU010801W-AD 1M_HCH_2480MHz_Ant1_NTNV Page 8 of 23 Report No.: 8334EU010801W-AD 2.2.2 6dB BW 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV Page 9 of 23 Report No.: 8334EU010801W-AD 1M_HCH_2480MHz_Ant1_NTNV Page 10 of 23 Report No.: 8334EU010801W-AD 3. Maximum Conducted Output Power 3.1 Test Result 3.1.1 Power Mode TX Type Frequency (MHz) Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit 1M SISO 2402 -0.34 <=30 Pass 2440 -1.32 <=30 Pass 2480 -0.92 <=30 Pass Page 11 of 23 Report No.: 8334EU010801W-AD 4. Maximum Power Spectral Density 4.1 Test Result 4.1.1 PSD Mode TX Type Frequency (MHz) Maximum PSD (dBm) Verdict ANT1 Limit 1M SISO 2402 -0.71 <=8 Pass 2440 -1.80 <=8 Pass 2480 -1.35 <=8 Pass Page 12 of 23 Report No.: 8334EU010801W-AD 4.2 Test Graph 4.2.1 PSD 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV Page 13 of 23 Report No.: 8334EU010801W-AD 1M_HCH_2480MHz_Ant1_NTNV Page 14 of 23 Report No.: 8334EU010801W-AD 5. Unwanted Emissions In Non-restricted Frequency Bands 5.1 Test Result 5.1.1 Ref Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) 1M SISO 2402 1 -0.84 2440 1 -1.80 2480 1 -1.22 Note1: Refer to FCC Part 15.247 (d) and ANSI C63.10-2020, the channel contains the maximum PSD level was used to establish the reference level. 5.1.2 CSE Mode TX Type Frequency (MHz) ANT Level of Reference (dBm) Limit (dBm) Verdict 1M SISO 2402 1 -0.84 -20.84 Pass 2440 1 -1.80 -21.80 Pass 2480 1 -1.22 -21.22 Pass Note1: Refer to FCC Part 15.247 (d) and ANSI C63.10-2020, the channel contains the maximum PSD level was used to establish the reference level. Page 15 of 23 Report No.: 8334EU010801W-AD 5.2 Test Graph 5.2.1 Ref 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV Page 16 of 23 Report No.: 8334EU010801W-AD 1M_HCH_2480MHz_Ant1_NTNV Page 17 of 23 Report No.: 8334EU010801W-AD 5.2.2 CSE 1M_LCH_2402MHz_Ant1_NTNV 1M_LCH_2402MHz_Ant1_NTNV Page 18 of 23 Report No.: 8334EU010801W-AD 1M_LCH_2402MHz_Ant1_NTNV 1M_LCH_2402MHz_Ant1_NTNV Page 19 of 23 Report No.: 8334EU010801W-AD 1M_LCH_2402MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV Page 20 of 23 Report No.: 8334EU010801W-AD 1M_MCH_2440MHz_Ant1_NTNV 1M_MCH_2440MHz_Ant1_NTNV Page 21 of 23 Report No.: 8334EU010801W-AD 1M_MCH_2440MHz_Ant1_NTNV 1M_HCH_2480MHz_Ant1_NTNV Page 22 of 23 Report No.: 8334EU010801W-AD 1M_HCH_2480MHz_Ant1_NTNV 1M_HCH_2480MHz_Ant1_NTNV Page 23 of 23 Report No.: 8334EU010801W-AD 1M_HCH_2480MHz_Ant1_NTNV 1M_HCH_2480MHz_Ant1_NTNV --------- End of Report -------

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