2ATCK-TMSS8G4TPMS SENSOR

Technical manual （1）Module information Product name：TPMS SENSOR Model name：TMSS8G4 Brand：BH SENS Manufacture Name：Baolong Huf Shanghai Electronics Co.,Ltd. Address: No. Building 3, Lane 1099, Zhangjing Road, Dongjing Town, Songjiang District, Shanghai City, P.R. China Power：Battery（3.6V） Rated current：＜10mA Operating frequency ：433.92MHz Modulation Frequency deviation：±45KHz Transmit Power：＜5 mW Modulation：FSK RF code：Manchester Antenna gain：-2.2dBi Receiver Low frequency：125kHz Modulation：ASK LF code：Manchester Operating temperature range：-40°C~+125°C Software version：V1.0 Hardware version：V2.0 The module is powered by 3.6V battery, the RF center frequency is 433.92MHz, the modulation frequency deviation is ±45KHz, and the modulation mode is FSK. In normal operation mode, the sensor function module will periodically detect the tire internal pressure and temperature information. The real-time data collected is sent to the receiver by RF circuit. In addition, the pressure, temperature, sensor ID and other information inside the tire can be read in real time through the hand-held low- frequency tool. （2）Diagram introduction Description： 1. This module contains a highly integrated chip, which includes microprocessor core, pressure sensor, temperature sensor, acceleration sensor and RF function module. The RF center frequency is 433.92MHz. 2. The module is powered by 3.6V battery. During the working period of the sensor, the microprocessor periodically reads the pressure and temperature information inside the tire through the pressure sensor and temperature sensor. 3. This module uses crystal oscillator circuit recommended by chip to provide accurate clock frequency for microprocessor. 4. As the core of the sensor, the microprocessor sensor function module is responsible for collecting tire pressure, temperature, acceleration and other information. 5. The sensor contains low-frequency function module, which is used for hand-held tools to read real- time data of sensor or upgrade software. Please take attention that changes or modification not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 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. This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radioexempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. 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. This equipment complies with IC RSS-102 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. ce matériel est conforme aux limites de dose d'exposition aux rayonnements, CNR-102 énoncée dans un autre environnement.cette eqipment devrait être installé et exploité avec distance minimale de 20 entre le radiateur et votre corps. .Mark R-NZ

Applicant Declaration QSF27-14-04 Rev 1.4 April 25, 2025 Page 1 of 1 Original Issue: Jan. 4, 2021 SGS North America Inc. 620 Old Peachtree Road SUITE 100 Suwanee, Georgia 30024 United States Applicant Legal Business Name Baolong Huf Shanghai Electronics Co., Ltd. Address No. Building 3, Lane 1099, Zhangjing Road, Dongjing Town, Songjiang District, Shanghai City, P.R. China FRN 0028481653 Grantee Code 2ATCK FCC ID: 2ATCK-TMSS8G4 Authorized Contact Name Howard Shi Contact Phone +86-21-31273333 Ext: 6549 Contact Email [email protected] I, the undersigned, certify that I am an authorized signatory for the Applicant and therefore declare; a) in accordance with 47CFR2.911(d), all of the statements herein and the exhibits attached hereto are true and correct to the best of my knowledge and belief. b) in accepting a Grant of Equipment Authorization issued by a TCB, under the authority of the FCC, as a result of the representations made in this application, the Applicant is responsible for: (1) labeling the equipment with the exact FCC ID as specified in this application, (2) compliance statement labeling pursuant to the applicable rules, (3) compliance of the equipment with the applicable technical rules, c) if the Applicant is not the actual manufacturer of the equipment, appropriate arrangements have been made with the manufacturer to ensure that production units of this equipment will continue to comply with the FCC’s technical requirements. d) in accordance with 47 CFR 2.909 and KDB394321, the Applicant has read, understood and agrees to accept that they are the responsible party and agree to abide by their responsibilities as specified under 47 CFR 2.909 and KDB394321. e) in accordance with ISO 17065, FCC KDB641163, FCC KDB610077, KDB394321 and RSP-100, the Applicant has read, understood, accepts and agrees to abide by the post market surveillance requirements. (1) the Applicant understands, accepts and agrees that a sample may be requested for surveillance testing. (2) the Applicant shall make provisions to always have a production sample available upon request by SGS, FCC and/or ISED. (3) the Applicant shall, upon request by SGS, at the Applicant’s expense, provide a production sample of the requested product to SGS, FCC and/or ISED as instructed. The sample shall include all support devices, cables, software, accessories or other hardware or software required for evaluation, review, certification and audit surveillance of products certified by SGS. f) neither the Applicant nor any party to the application is 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 because of a conviction for possession or distribution of a controlled substance. See 47CFR 1.2002(b) for the definition of a “party” for these purposes. g) the Applicant has read, understood, accepts and agrees to abide by the SGS North America, Inc. terms and conditions as specified in the TCB Application Form 731 (QSF27-14-01). Link to CFRs: https://www.fcc.gov/wireless/bureau-divisions/technologies-systems-and-innovation-division/rules-regulations-title-47 Link to KDBs: https://apps.fcc.gov/oetcf/kdb/index.cfm Link to RSP-100: https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf01130.html Link to the Covered List: Covered List Applicant Signature: Date: March 26, 2026 Print Name: Howard Shi Title: Deputy General Manager *NOTE: This declaration cannot be signed by an Agent, it shall be signed by an authorized person listed in the FCC database

FCC COVERED LIST DECLARATION LETTER Page 1 of 1 Revision 1.0 SGS North America Inc. 620 Old Peachtree Road SUITE 100 Suwanee, Georgia 30024 United States Applicant Legal Business Name Baolong Huf Shanghai Electronics Co., Ltd. Address No. Building 3, Lane 1099, Zhangjing Road, Dongjing Town, Songjiang District, Shanghai City, P.R. China FRN 0028481653 Grantee Code 2ATCK FCC ID: 2ATCK-TMSS8G4 Authorized Contact Name Howard Shi Contact Phone +86-21-31273333 Ext: 6549 Contact Email [email protected] Baolong Huf Shanghai Electronics Co., Ltd. (“the applicant”) certifies: - 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. - as of the date of the filing of the application, the applicant [is not] identified on the Covered list, established pursuant to §1.50002, as an entity producing “covered” equipment. - the software to be loaded prior to marketing of the equipment identified above is not “covered” software manufactured by any entity including predecessors, successors, parents, subsidiaries, affiliates or any entity which has rebranded or relabeled the software produced by the entity(ies) identified on the “Covered List”. - the device is not capable of storing or running software listed on the covered list and therefore is inherently compliant. Link to the Covered List: Covered List Applicant Signature: Date: March 26, 2026 Print Name: Howard Shi Title: Deputy General Manager *NOTE: This declaration cannot be signed by an Agent, it shall be signed by an authorized person listed in the FCC database

Baolong Huf Shanghai Electronics Co., Ltd. Date: March 26, 2026 TO: Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 Regarding: FCC ID: 2ATCK-TMSS8G4 To whom it may concern: We, the undersigned, hereby authorize Parlam Zhan to act on our behalf in all manners relating to application for equipment authorization with respect to the FCC ID above, including signing of all documents relating to these matters. Any and all acts carried out by the agent on our behalf shall have the same effect as acts of our own. 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. 853(a). Where our agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for Certification, as specified by SGS North America, Inc., still resides with << Baolong Huf Shanghai Electronics Co., Ltd.>>. This authorization is valid until further written notice from the applicant. Name : Howard Shi Title: Deputy General Manager Signature: On behalf of Company: Baolong Huf Shanghai Electronics Co., Ltd. Telephone: +86-21-31273333 Ext: 6549

Baolong Huf Shanghai Electronics Co., Ltd. To: SGS North America Inc. 620 Old Peachtree Road SUITE 100 Suwanee, Georgia United States From: Baolong Huf Shanghai Electronics Co., Ltd. No. Building 3, Lane 1099, Zhangjing Road, Dongjing Town, Songjiang District, Shanghai City, P.R. China Regarding: Confidentiality Request regarding application for FCC ID: 2ATCK-TMSS8G4 LONG TERM CONFIDENTIALITY Pursuant to 47 CFR Section 0.459 and 0.457 of the commission’s rules, the applicant hereby request confidential treatment of the documents listed below, associated with the certification application referenced above. Schematic(s) Block Diagrams Operational Descriptions The documents above contain proprietary information not released to the public. Public disclosure of this information may prove harmful to the business of the applicant. Sincerely, Signature: Printed Name: Howard Shi Title: Deputy General Manager Company Name: Baolong Huf Shanghai Electronics Co., Ltd.

Compliance Certification Services (Kunshan) Inc. Page: 1 of 5 External Photos for KSCR2602000344AT Compliance Certification Services (Kunshan) Inc. Page: 2 of 5 EUT Constructional Details (EUT Photos) Compliance Certification Services (Kunshan) Inc. Page: 3 of 5 Compliance Certification Services (Kunshan) Inc. Page: 4 of 5 Compliance Certification Services (Kunshan) Inc. Page: 5 of 5 - End of the Appendix -

Compliance Certification Services (Kunshan) Inc. Page: 1 of 3 Internal Photos for KSCR2602000344AT Compliance Certification Services (Kunshan) Inc. Page: 2 of 3 EUT Constructional Details (EUT Photos) Compliance Certification Services (Kunshan) Inc. Page: 3 of 3 - End of the Appendix -

Report No.: KSCR260200034402 Page: 1 of 10 CCSEM-TRF-001 Rev. 03 Dec 18,2024 1 Cover Page RF Exposure Evaluation Report Application No.: KSCR2602000344AT FCC ID: 2ATCK-TMSS8G4 Applicant: Baolong Huf Shanghai Electronics Co., Ltd. Address of Applicant: No. Building 3, Lane 1099, Zhangjing Road, Dongjing Town, Songjiang District, Shanghai City, P.R. China Manufacturer: Baolong Huf Shanghai Electronics Co., Ltd. Address of Manufacturer: No. Building 3, Lane 1099, Zhangjing Road, Dongjing Town, Songjiang District, Shanghai City, P.R. China Factory: Baolong Huf Shanghai Electronics Co., Ltd. Address of Factory: No. Building 3, Lane 1099, Zhangjing Road, Dongjing Town, Songjiang District, Shanghai City, P.R. China Equipment Under Test (EUT): EUT Name: TPMS SENSOR Model No.: TMSS8G4 Trade Mark : BH SENS Standard(s) : FCC Rules 47 CFR §2.1091 KDB 447498 D04 interim General RF Exposure Guidance v01 Date of Receipt: 2026-02-06 Date of Test: 2026-03-05 to 2026-03-15 Date of Issue: 2026-03-16 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. Report No.: KSCR260200034402 Page: 2 of 10 CCSEM-TRF-001 Rev. 03 Dec 18,2024 Revision Record Version Description Date Remark 00 Original 2026-03-16 / Authorized for issue by: Tested By Bruce-WP_Li/Project Engineer Approved By Terry Hou /Reviewer Report No.: KSCR260200034402 Page: 3 of 10 CCSEM-TRF-001 Rev. 03 Dec 18,2024 2 Contents Page 1 Cover Page .................................................................................................................................. 1 2 Contents ...................................................................................................................................... 3 3 General Information..................................................................................................................... 4 3.1 General Description of E.U.T. ................................................................................................ 4 3.2 Technical Specifications ........................................................................................................ 4 3.3 Separation Distance .............................................................................................................. 4 3.4 Test Location ........................................................................................................................ 5 3.5 Test Facility ........................................................................................................................... 5 4 RF Exposure Test Exemptions ................................................................................................... 6 4.1 FCC RF Exposure Test Exemptions for single RF sources .................................................... 6 4.2 RF Exposure Test Exemptions for Simultaneous Transmission.............................................. 8 5 Measurement and Calculation .................................................................................................. 10 5.1 Maximum transmit power .................................................................................................... 10 5.2 RF Exposure Calculation ..................................................................................................... 10 Report No.: KSCR260200034402 Page: 4 of 10 CCSEM-TRF-001 Rev. 03 Dec 18,2024 3 General Information 3.1 General Description of E.U.T. Power supply: DC 3.6V by Battery Battery model:ER14250T Output: DC 3.6V 3.2 Technical Specifications Operation Frequency 433.92MHz Channel Numbers: 1 Modulation Type: FSK Antenna Gain: -2.2 dBi (Provided by manufacturer) Antenna Type: Rod antenna Operation Type: Periodic transmitter Software version number: V1.0 Hardware version number: V2.0 SN: 5A5002A5 Firmware Version: V 1.0 3.3 Separation Distance Separation distance between the antenna to person (R): ＞20cm Remark: This minimum test separation distance is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander. R has been stated in user manual. Report No.: KSCR260200034402 Page: 5 of 10 CCSEM-TRF-001 Rev. 03 Dec 18,2024 3.4 Test Location All tests were performed at: Compliance Certification Services (Kunshan) Inc. No.10 Weiye Rd, Innovation park, Eco&Tec, Development Zone, Kunshan City, Jiangsu, China. Tel: +86 512 5735 5888 Fax: +86 512 5737 0818 No tests were sub-contracted. Note: 1.SGS is not responsible for wrong test results due to incorrect information (e.g. max. clock frequency, highest internal frequency, antenna gain, cable loss, etc ) is provided by the applicant. (if applicable). 2.SGS is not responsible for the authenticity, integrity and the validity of the conclusion based on results of the data provided by applicant. (if applicable). 3. Sample source: sent by customer. 3.5 Test Facility The test facility is recognized, certified, or accredited by the following organizations: • A2LA (Certificate No. 2541.01) Compliance Certification Services (Kunshan) Inc. is accredited by the American Association for Laboratory Accreditation (A2LA). • FCC (Designation Number: CN1172) Compliance Certification Services (Kunshan) Inc. has been recognized as an accredited testing laboratory. • ISED (CAB Identifier: CN0072) Compliance Certification Services (Kunshan) Inc. has been recognized by Innovation, Science and Economic Development Canada (ISED) as an accredited testing laboratory. Company Number: 2324E • VCCI (Member No:1938) The 3m and 10m Semi-anechoic chamber and Shielded Room of Compliance Certification Services (Kunshan) Inc. has been registered in accordance with the Regulations for Voluntary Control Measures with Registration No.: R-20134, R-11600, C-11707, T-11499, G-10216 respectively. Report No.: KSCR260200034402 Page: 6 of 10 CCSEM-TRF-001 Rev. 03 D…

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Justification statement for Antenna To: Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 Regarding: FCC ID: 2ATCK-TMSS8G4 Dear Sir/Madam, Only radiated measurements are used for EUT with FCC ID: 2ATCK-TMSS8G4 to show compliance with FCC limits for fundamental and spurious emissions. All measurements were performed radiated and therefore additional antenna gain documentation is not required. The detailed information for antenna as below shows: Design Specifications Typical Antenna Type Rod antenna Working Frequency 433.92MHz

Report No.: KSCR260200034401 Page: 1 of 26 CCSEM-TRF-001 Rev. 03 Dec 18, 2024 TEST REPORT Application No.: KSCR2602000344AT FCC ID: 2ATCK-TMSS8G4 Applicant: Baolong Huf Shanghai Electronics Co., Ltd. Address of Applicant: No. Building 3, Lane 1099, Zhangjing Road, Dongjing Town, Songjiang District, Shanghai City, P.R. China Manufacturer: Baolong Huf Shanghai Electronics Co., Ltd. Address of Manufacturer: No. Building 3, Lane 1099, Zhangjing Road, Dongjing Town, Songjiang District, Shanghai City, P.R. China Factory: Baolong Huf Shanghai Electronics Co., Ltd. Address of Factory: No. Building 3, Lane 1099, Zhangjing Road, Dongjing Town, Songjiang District, Shanghai City, P.R. China Equipment Under Test (EUT): EUT Name: TPMS SENSOR Model No.: TMSS8G4 Trade Mark: BH SENS Standard(s) : 47 CFR Part 15, Subpart C 15.231 Date of Receipt: 2026-02-06 Date of Test: 2026-03-05 to 2026-03-15 Date of Issue: 2026-03-16 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. Report No.: KSCR260200034401 Page: 2 of 26 CCSEM-TRF-001 Rev. 03 Dec 18, 2024 Revision Record Version Description Date Remark 00 Original 2026-03-16 / Authorized for issue by: Tested By Bruce-WP_Li/Project Engineer Approved By Terry Hou /Reviewer Report No.: KSCR260200034401 Page: 3 of 26 CCSEM-TRF-001 Rev. 03 Dec 18, 2024 2 Test Summary Radio Spectrum Technical Requirement Item Standard Method Requirement Result Antenna Requirement 47 CFR Part 15, Subpart C 15.231 N/A 47 CFR Part 15, Subpart C 15.203 Pass Radio Spectrum Matter Part Item Standard Method Requirement Result 20dB Bandwidth 47 CFR Part 15, Subpart C 15.231 ANSI C63.10 (2020) Section 6.9.2 47 CFR Part 15, Subpart C 15.231(c) Pass Dwell Time (15.231(e)) ANSI C63.10 (2020) Section 7.4 47 CFR Part 15, Subpart C 15.231(e) Pass Radiated Emissions below 1GHz ANSI C63.10 (2020) Section 6.4&6.5 47 CFR Part 15C Section 15.231(e) and 15.209 Pass Field Strength of the Fundamental Signal (15.231(b)) ANSI C63.10 (2020) Section 6.5 47 CFR Part 15, Subpart C 15.231(e) Pass Radiated Emissions above 1GHz ANSI C63.10 (2020) Section 6.6 47 CFR Part 15C Section 15.231(e) and 15.209 Pass Report No.: KSCR260200034401 Page: 4 of 26 CCSEM-TRF-001 Rev. 03 Dec 18, 2024 3 Contents Page 1 COVER PAGE ..................................................................................................................................... 1 2 Test Summary .................................................................................................................................... 3 3 Contents ............................................................................................................................................ 4 4 General Information........................................................................................................................... 5 4.1 Details of E.U.T. .......................................................................................................................... 5 4.2 Description of Support Units ........................................................................................................ 5 4.3 Measurement Uncertainty ........................................................................................................... 6 4.4 Test Location .............................................................................................................................. 7 4.5 Test Facility ................................................................................................................................. 7 4.6 Deviation from Standards ............................................................................................................ 7 4.7 Abnormalities from Standard Conditions ...................................................................................... 7 5 Equipment List .................................................................................................................................. 8 6 Radio Spectrum Technical Requirement .......................................................................................... 9 6.1 Antenna Requirement ................................................................................................................. 9 7 Radio Spectrum Matter Test Results ...............................................................................................10 7.1 20dB Bandwidth .........................................................................................................................10 7.2 Dwell Time (15.231(a1)) .............................................................................................................11 7.3 Radiated Emissions below 1GHz ................................................................................................12 7.4 Field Strength of the Fundamental Signal (15.231(b)) .................................................................14 7.5 Radiated Emissions above 1GHz ...............................................................................................16 8 Test Setup Photo ..............................................................................................................................19 9 EUT Constructional Details (EUT Photos) .......................................................................................19 10 Appendix ...........................................................................................................................................20 10.1 Field Strength of the Fundamental Signal ...................................................................................20 10.2 Spurious Emissions ....................................................................................................................21 10.3 20dB Bandwidth .........................................................................................................................24 10.4 Dwell Time ..............................................…

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Compliance Certification Services (Kunshan) Inc. Page: 1 of 2 Appendix Photographs of Test Setup for KSCR2602000344AT Test Model No.: TMSS8G4 Compliance Certification Services (Kunshan) Inc. Page: 2 of 2 Test Setup Photo Radiated emissions spurious (Below 1GHz) Radiated emissions spurious (Above 1GHz) - End of the Appendix -