2BUHN-TPMST1TPMS Tire pressure monitoring system

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

Qingdao RideNow Technology Co., LTD. Covered Equipment Certification Attestation Letter 12/29/2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2BUHN-TPMST1 Qingdao RideNow 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. Qingdao RideNow 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. Qingdao RideNow 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). <Signature>: Name: Jack Bu Title: Manager Company: Qingdao RideNow Technology Co., LTD. Date: 12/29/2025

Qingdao RideNow Technology Co., LTD. * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. 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 12/29/2025 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2BUHN-TPMST1 FRN of applicant: 0037891249 Per section 2.911(d)(7) of the FCC rules, [Qingdao RideNow 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: Company Name: Herland International Trading Inc FCC Registration Number (FRN): 0036324101 Physical U.S. Company Address: 1370 Valley Vista Dr Ste 200 Diamond Bar, CA 91765 Contact Person: Jianfeng Gao Agent Email Address: [email protected] The above contact person accepts the obligation for service of process. 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. Applicant Signed: Signed: Printed name: Jack bu Title: Manager Company Name: Qingdao RideNow Technology Co., LTD. Date: 12/29/2025 Agent Signed (if different from Applicant): Signed: Printed name: Jianfeng Gao Title: Manager Company Name: Herland International Trading Inc Date: 12/29/2025

Qingdao RideNow Technology Co., LTD. 2025-12-25 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen DL Testing Technology Co., Ltd.（101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, China）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 Qingdao RideNow Technology Co., LTD.（No. 23 Xianshan East Road, Chengyang District, Qingdao, Shandong Province, China） <Signature>: Name: Jack Bu Title: Manager Company: Qingdao RideNow Technology Co., LTD.

Qingdao RideNow Technology Co., LTD. 2025-12-25 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, <Signature>: Name: Jack Bu Title: Manager Company: Qingdao RideNow Technology Co., LTD.

Qingdao RideNow Technology Co., LTD. 2025-12-25 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2BUHN-TPMST1 Product Name: TPMS Tire pressure monitoring system 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. <Signature>: Name: Jack Bu Title: Manager Company: Qingdao RideNow Technology Co., LTD.

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Size: 10*8mm Model.: TPMS T1 FCC ID: 2BUHN-TPMST1 Label location

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FCC ID: 2BUHN-TPMST1 RF Exposure Evaluation Limits 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) Limits for Maximum Permissible Exposure (MPE) Frequency range (MHz) Electric field strength (V/m) Magnetic field strength (A/m) Power density (mW/cm 2 ) Averaging time (minutes) (A) Limits for Occupational/Controlled Exposures 0.3–3.0 614 1.63 *(100) 6 3.0–30 1842/f 4.89/f *(900/f 2 ) 6 30–300 61.4 0.163 1.0 6 300–1500 f/300 6 1500–100,000 5 6 (B) Limits for General Population/Uncontrolled Exposure 0.3–1.34 614 1.63 *(100) 30 1.34–30 824/f 2.19/f *(180/f 2 ) 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 Friis transmission formula: Pd = (Pout*G)/(4*pi*r 2 ) 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 id the limit of MPE, 1 mW/cm 2 . If we know the maximum gain of the antenna and the total power input to the antenna, through the calculation, we will know the distance r where the MPE limit is reached. Test Procedure Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. Test Result of RF Exposure Evaluation For BT Channel Output power to antenna (dBm) Output power to antenna (mW) Power Density at R=20cm (mW/cm 2 ) Limit (mW/cm 2 ) Result GFSK 3.84 2.42 0.0005 1.0 PASS Remark: antenna gain=0dBi

Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260105057R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 1 of 31 FCC Part 15C Test Report FCC ID: 2BUHN-TPMST1 Applicant: Qingdao RideNow Technology Co., LTD. Address: No. 23 Xianshan East Road, Chengyang District, Qingdao, Shandong Province, China Manufacturer: Qingdao RideNow Technology Co., LTD. Address: No. 23 Xianshan East Road, Chengyang District, Qingdao, Shandong Province, China Product Name: TPMS Tire pressure monitoring system Trade Mark: N/A Model Number: TPMS T1 Date of Receipt: Jan. 05, 2025 Test Date: Jan. 05, 2025 - Jan. 16, 2025 Date of Report: Jan. 16, 2025 Prepared By: Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, China Applicable Standards: FCC PART 15 C 15.247 ANSI C63.10:2020 Test Result: Pass Report Number: DLE-260105057R Prepared (Test Engineer): Alisa Song Reviewer (Supervisor): Jack Bu Approved (Manager): Jade Yang This test report is based on a single evaluation of one sample of above mentioned products. It is not permitted to be duplicated in extracts without written approval of Shenzhen DL Testing Technology Co., Ltd. Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260105057R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 2 of 31 Table of Contents Page 1. . SUMMARY OF TEST RESULTS 4 1.1. MEASUREMENT UNCERTAINTY 4 2. . GENERAL INFORMATION 5 2.1. GENERAL DESCRIPTION OF EUT 5 2.2. DESCRIPTION OF TEST MODES 6 2.3. BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 6 2.4. DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 7 2.5. TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 7 2.6. EQUIPMENTS LIST FOR ALL TEST ITEMS 8 3. . EMC EMISSION TEST 9 3.1. CONDUCTED EMISSION MEASUREMENT 9 3.1.1. POWER LINE CONDUCTED EMISSION LIMITS 9 3.1.2. TEST PROCEDURE 9 3.1.3. DEVIATION FROM TEST STANDARD 9 3.1.4. TEST SETUP 10 3.1.5. EUT OPERATING CONDITIONS 10 3.1.6. TEST RESULTS 10 3.2. RADIATED EMISSION MEASUREMENT 11 3.2.1. RADIATED EMISSION LIMITS 11 3.2.2. TEST PROCEDURE 12 3.2.3. DEVIATION FROM TEST STANDARD 12 3.2.4. TEST SETUP 12 3.2.5. EUT OPERATING CONDITIONS 13 3.2.6. TEST RESULTS (BETWEEN 9KHZ – 30 MHZ) 14 3.2.7. TEST RESULTS (BETWEEN 30MHZ – 1GHZ) 15 3.2.8. TEST RESULTS (1GHZ~25GHZ) 17 3.3 RADIATED BAND EMISSION MEASUREMENT 18 3.3.1 TEST REQUIREMENT: 18 3.3.2 TEST PROCEDURE 18 3.3.3 DEVIATION FROM TEST STANDARD 18 3.3.4 TEST SETUP 19 3.3.5 EUT OPERATING CONDITIONS 19 3.4 CONDUCTED BAND EDGE EMISSION&CONDUCTED SPURIOUS EMISSIONS MEASUREMENT 21 3.4.1 APPLICABLE STANDARD 21 3.4.2 TEST PROCEDURE 21 3.4.3 DEVIATION FROM STANDARD 21 3.4.4 TEST SETUP 21 Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260105057R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 3 of 31 Table of Contents Page 3.4.5 EUT OPERATION CONDITIONS 21 3.4.6 TEST RESULTS 21 4. . PEAK OUTPUT POWER 24 4.1. APPLIED PROCEDURES / LIMIT 24 4.1.1. TEST PROCEDURE 24 4.1.2. DEVIATION FROM STANDARD 24 4.1.3. TEST SETUP 24 4.1.4. EUT OPERATION CONDITIONS 24 4.1.5. TEST RESULTS 25 5. . POWER SPECTRAL DENSITY TEST 27 5.1. APPLIED PROCEDURES / LIMIT 27 5.1.1. TEST PROCEDURE 27 5.1.2. DEVIATION FROM STANDARD 27 5.1.3. TEST SETUP 27 5.1.4. EUT OPERATION CONDITIONS 27 5.1.5. TEST RESULTS 27 6. . 6DB BANDWIDTH TEST 29 6.1. APPLIED PROCEDURES / LIMIT 29 6.1.1. TEST PROCEDURE 29 6.1.2. DEVIATION FROM STANDARD 29 6.1.3. TEST SETUP 29 6.1.4. EUT OPERATION CONDITIONS 29 6.1.5. TEST RESULTS 29 7. . ANTENNA REQUIREMENT 31 7.1. STANDARD REQUIREMENT 31 7.2. EUT ANTENNA 31 8. . TEST SEUUP PHOTO 31 9. . EUT PHOTO 31 Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260105057R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 4 of 31 1.. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.247) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission N/A 15.247(c) Radiated Spurious Emission PASS 15.205 Band Edge Emission PASS 15.247(b) Peak Output Power PASS 15.247(a)(2) 6dB Bandwidth PASS 15.247(e) Power Spectral Density PASS 15.203 Antenna Requirement PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report Test lab: Shenzhen DL Testing Technology Co., Ltd. Address: 101-201, Comprehensive Building, Tongzhou Electronics Longgang Factory Area, No.1 Baolong Fifth Road, Baolong Community, Baolong Street, Longgang District, Shenzhen, China FCC Test Firm Registration Number: 854456 Designation Number: CN1307 IC Registered No.: 27485 CAB ID.: CN0118 1.1. MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %。 No. Item Uncertainty 1 Conducted Emission Test ±2.56dB 2 RF power,conducted ±0.42dB 3 Spurious emissions,conducted ±2.76dB 4 All emissions,radiated(<1G) ±3.65dB 5 All emissions,radiated(>1G) ±4.89dB 6 Temperature ±0.5°C 7 Humidity ±2% 8 6dB Bandwidth ±0.2MHz 9 Power Spectral Density ±0.3dBm Shenzhen DL Testing Technology Co., Ltd. Report No.: DLE-260105057R Test Report Tel: 400-688-3552 Web:www.dl-cert.com Email: [email protected] Page 5 of 31 2.. GENERAL INFORMATION 2.1. GENERAL DESCRIPTION OF EUT Product Name: TPMS Tire pressure monitoring system Trade Mark: N/A Model Number: TPMS T1 Test Model: TPMS T1 Model Difference: N/A Operation Frequency: 2402~2480MHz Channel numbers: 40 Channels Channel separation: 1MHz Data Rate: 1Mbps Modulation technology: GFSK Antenna Type: Internal Antenna Antenna gain: 0 dBi Power supply: DC 3V Note: 1.For a more detailed features description, please refer to the manufacturer’s specifications or the User's Manual. 2.The EUT’s all information provided by client. 2.Channel Lis Cha…

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Antenna describe 1. Antenna describe: Antenna plate PCB ANTENNA Make name/model name PDT-002 Antenna gain 0dBi Frequency range 2.4GHZ-2.483GHZ Connector type direct Manufacturer Name: DONGGUANG XIAOKE INDUSTRLES.CO.,LTD Manufacture Address: NO. 227, DONGCHENG SECTION, GUANDONG ROAD, DONGCHENG STREET, DONGGUAN CITY,CHINA 2.External view drawing: Picture of antenna(mm) 3.Antenna Radiation Pattern

Shenzhen DL Testing Technology Co., Ltd. EUT TEST PHOTO Radiated Measurement Photos ※※※※※ END OF REPORT ※※※※※