SX8RS4000Rite Sensor HD

FCC Warning  7KLVGHYLFHFRPSOLHVZLWKSDUWRIWKH)&&5XOHV2SHUDWLRQLVVXEMHFWWRWKHIROORZLQJWZRFRQGLWLRQV  7KLVGHYLFHPD\QRWFDXVHKDUPIXOLQWHUIHUHQFHDQG  WKLVGHYLFHPXVWDFFHSWDQ\LQWHUIHUHQFH UHFHLYHGLQFOXGLQJLQWHUIHUHQFHWKDWPD\FDXVHXQGHVLUHGRSHUDWLRQ  $Q\&KDQJHVRUPRGLILFDWLRQVQRWH[SUHVVO\DSSURYHGE\WKHSDUW\UHVSRQVLEOHIRUFRPSOLDQFHFRXOG YRLGWKHXVHU VDXWKRULW\WRRSHUDWHWKHHTXLSPHQW  Note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arning 7KLVGHYLFHFRPSOLHVZLWK,QGXVWU\&DQDGD¶VOLFHQFHH[HPSW566V2SHUDWLRQLVVXEMHFWWRWKHIROORZLQJ WZRFRQGLWLRQV  7KLVGHYLFHPD\QRWFDXVHLQWHUIHUHQFHDQG  7KLVGHYLFHPXVWDFFHSWDQ\LQWHUIHUHQFHLQFOXGLQJLQWHUIHUHQFHWKDWPD\FDXVHXQGHVLUHGRSHUDWLRQ RIWKHGHYLFH  7KHGHYLFHKDVEHHQHYDOXDWHGWRPHHWJHQHUDO5)H[SRVXUHUHTXLUHPHQW7KHGHYLFHFDQEHXVHGLQ SRUWDEOHH[SRVXUHFRQGLWLRQZLWKRXWUHVWULFWLRQ  &HWDSSDUHLOHVWFRQIRUPHDX[&15H[HPSWHVGHOLFHQFHG ,QGXVWULH&DQDGD6RQIRQFWLRQQHPHQWHVW VRXPLVDX[GHX[FRQGLWLRQVVXLYDQWHV  &HGLVSRVLWLIQHSHXWFDXVHUG LQWHUIpUHQFHVHW  &HGLVSRVLWLIGRLWDFFHSWHUWRXWHLQWHUIpUHQFH\FRPSULVOHVLQWHUIpUHQFHVTXLSHXYHQWFDXVHUXQ PDXYDLVIRQFWLRQQHPHQWGHO DSSDUHLO 

Bartec USA LLC. * 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 3/13/2026 ATTN.: Reviewing Engineer FCC ID: SX8RS4000 Per section 2.911(d)(7) of the FCC rules, THINKCAR TECH 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: Bartec USA LLC. Physical U.S. Company Address: 6475 19 1/2 Mile Road, Sterling Heights, MI 48314, United States Agent contact name/Title : Scot A. Holloway/CEO Agent Email Address: [email protected] Tel No.: 586-685-1300 FRN No.: 0011559168 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: Agent Signed (if different to Applicant): Signed: Signed: Printed name: Scot A. Holloway Printed name: Scot A. Holloway Title: CEO Title: CEO Company Name: Bartec USA LLC. Company Name: Bartec USA LLC. Date: 3/13/2026 Date: 3/13/2026

Bartec USA LLC. 2026.03.13 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: SX8RS4000) [Bartec USA LLC.] (“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, Jiankuai Li Bartec USA LLC. 2026.03.13 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: SX8RS4000) [Bartec USA LLC.] (“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, Jiankuai Li

Bartec USA LLC. 2026.03.13 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Rite Sensor HD/RS-4000/ FCC ID: SX8RS4000) 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 •Schematics •Block diagram •Operation description required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Jiankuai Li

Bartec USA LLC. 2026.03.13 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 (Shenzhen STS Test Services 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. Signature: Name: Scot A. Holloway

Page 1 of 3 Report No.: STS2601122 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: RS-4000 Photo 1 Photo 2 Page 2 of 3 Report No.: STS2601122 Photo 3 Photo 4 Page 3 of 3 Report No.: STS2601122 Photo 5 Photo 6

Label 3CM*4CM

Page 1 of 3 Report No.: STS2601122 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: RS-4000 Photo 1 Photo 2 Page 2 of 3 Report No.: STS2601122 Photo 3 Photo 4 Page 3 of 3 Report No.: STS2601122 Photo 5

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. MPE Report Report No.:STS2601122H01 Issued for Bartec USA LLC. 6475 19 1/2 Mile Road, Sterling Heights, MI 48314, United States Product Name: Rite Sensor HD Brand Name: N/A Model Name: RS-4000 Series Model(s): N/A FCC ID: SX8RS4000 Test Standards: FCC 47CFR §2.1093 Page 2 of 9 Report No.: STS2601122H01 TEST REPORT Applicant’s Name ................. : Bartec USA LLC. Address .................................. : 6475 19 1/2 Mile Road, Sterling Heights, MI 48314, United States Manufacturer's Name .......... : HAMATON AUTOMOTIVE TECHNOLOGY CO., LTD Address .................................. : No.122,Changda Road, Linping, Yuhang, Hangzhou, China Product Description Product Name ........................ : Rite Sensor HD Brand Name ........................... : N/A Model Name........................... : RS-4000 Series Model(s) ...................... : N/A Test Standards ..................... : FCC 47CFR §2.1093 447498 D04 Interim General RF Exposure Guidance v01 The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. Date of Test ............................................ : Date of receipt of test item ...................... : 06 Jan. 2026 Date (s) of performance of tests.............. : 06 Jan. 2026 ~ 20 Jan. 2026 Date of Issue ........................................... : 20 Jan. 2026 Test Result ............................................... : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 9 Report No.: STS2601122H01 TABLE OF CONTENTS 1. GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST FACTORY 5 2. FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 9 Page 4 of 9 Report No.: STS2601122H01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 20 Jan. 2026 STS2601122H01 ALL Initial Issue Page 5 of 9 Report No.: STS2601122H01 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name Rite Sensor HD Brand Name N/A Model Name RS-4000 Series Model(s) N/A Model Difference N/A Product Description The EUT is Rite Sensor HD Operation Frequency: 433.92MHz 2402 – 2480 MHz Modulation Type: ASK / FSK BT BR(1Mbps): GFSK BT EDR(2Mbps): π/4-DQPSK Antenna gain: Internal Antenna 1.66dBi Antenna Designation: 1.2dBi Ceramic Antenna Power Rating Input: DC 3V Adapter N/A Battery Rated Voltage: 3 V Hardware Version N/A Software Version N/A 1.2 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 Page 6 of 9 Report No.: STS2601122H01 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS Follow the maximum permissible exposure (MPE) limits specified in 447498 D04 Interim General Radio Frequency Exposure Guidelines v01. The gain of the antenna used in the product was extracted from the supplied antenna data sheet and the maximum total power input to the antenna was also measured. Calculate the distance from the product to the MPE limit by the formula. 2.2 LIMIT For single RF sources (i.e., any single fixed RF source, mobile device, or portable device, as defined in paragraph (b)(2) of this section): A single RF source is exempt if: (A) The available maximum time-averaged power is no more than 1 mW, regardless of separation distance. This exemption may not be used in conjunction with other exemption criteria other than those in paragraph (b)(3)(ii)(A) of Part 1.1307. Medical implant devices may only use this exemption and that in paragraph (b)(3)(ii)(A); (B) Or the available maximum time-averaged power or effective radiated power (ERP), whichever is greater, is less than or equal to the threshold Pth (mW) described in the following formula. This method shall only be used at separation distances (cm) from 0.5 centimeters to 40 centimeters and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by: Page 7 of 9 Report No.: STS2601122H01 (C) Or using below table and the minimum separation distance (R in meters) from the body of a nearby person for the frequency (f in MHz) at which the source operates, the ERP (watts) is no more than the calculated value prescribed for that frequency. For the exemption in Table 1 to apply, R must be at least λ/2π, where λ is the free-space operating wavelength in meters. If the ERP of a single RF source is not easily obtained, then the available maximum time-averaged power may be used in lieu of ERP if the physical dimensions of the radiating structure(s) do not exceed the electrical length of λ/4 or if the antenna gain is less than that of a half-wave dipole (1.64 linear value). RF Source frequency (MHz) Threshold ERP(watts) 0.3-1.34 1,920 R 2 . 1.34-30 3,450 R 2 /f 2 . 30-300 3.83 R 2 . 300-1,500 0.0128 R 2 f. 1,500-100,000 19.2R 2 . Page 8 of 9 Report No.: STS2601122H01 For multiple RF sources: Multiple RF sources are exempt if: (A) The available maximum time-averaged power of each source is no more than 1 mW and there is a separation distance of two centimeters between any portion of a radiating structure operating and the nearest portion of any other radiating structure in the same device, except if the sum of multiple sources is less than 1 mW during the time-averaging period, in which case they may be treated as a single source (separation is not required). This exemption may not be used in conjunction with other exemption criteria other than those is paragraph (b)(3)(i)(A) of Part 1.1307. Medical implant devices may only use this exempti…

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Part Name.: Metal Antenna Part No.: B1803017000 1.History list REV. Editor Page Items of change Date ECN No. A0 Jianing Shi all Initial release 20230220 NA 2. Electrical Specification: Items Spec. Frequency 433MHz Peak Gain 1.2dBi S11 -22.46dB VSWR 1.3367 Nominal Impedance 50Ω Polarization Linear Radiation Omni-directional Impedance 50Ω Operation Remp. -40°C～105°C Material Cupronickel C7701 Design： Jianing Shi Audit： Jakc Hu Approval： Tao Yuan 3.Antenna drawing 4. Electrical characteristics Return loss: VSWR:

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.:STS2601122W01 Issued for Bartec USA LLC. 6475 19 1/2 Mile Road, Sterling Heights, MI 48314, United States Product Name: Rite Sensor HD Brand Name: N/A Model Name: RS-4000 Series Model(s): N/A FCC ID: SX8RS4000 Test Standards: FCC Part 15.231 Page 2 of 38 Report No.: STS2601122W01 TEST REPORT Applicant’s Name ................. : Bartec USA LLC. Address .................................. : 6475 19 1/2 Mile Road, Sterling Heights, MI 48314, United States Manufacturer's Name ........... : HAMATON AUTOMOTIVE TECHNOLOGY CO., LTD Address .................................. : No.122,Changda Road, Linping, Yuhang, Hangzhou, China Product Description Product Name ............................ : Rite Sensor HD Brand Name ............................... : N/A Model Name ........................... : RS-4000 Series Model(s) .................... : N/A Standards .................................. : FCC Part 15.231 Test Procedure ........................... : ANSI C63.10-2020 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test ............................ : Date of Receipt of Test Item ... : 06 Jan. 2026 Date of performance of tests .. : 06 Jan. 2026 ~ 20 Jan. 2026 Date of Issue .......................... : 20 Jan. 2026 Test Result .............................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 38 Report No.: STS2601122W01 TABLE OF CONTENTS Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 6 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 9 2.3 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 9 2.4 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 10 2.5 EQUIPMENTS LIST 11 3. EMC EMISSION TEST 12 3.1 CONDUCTED EMISSION MEASUREMENT 12 3.2 TEST PROCEDURE 13 3.3 TEST SETUP 13 3.4 TEST RESULTS 13 4. RADIATED EMISSION MEASUREMENT 14 4.1 RADIATED EMISSION LIMITS 14 4.2 TEST PROCEDURE 16 4.3 DEVIATION FROM TEST STANDARD 16 4.4 TEST SETUP 17 4.5 EUT OPERATING CONDITIONS 18 4.6 TEST RESULTS 18 4.7 FIELD STRENGTH CALCULATION 19 4.8 TEST RESULTS (EMISSION) 19 5. BANDWIDTH TEST 28 5.1 LIMIT 28 5.2 TEST REQUIREMENTS 28 5.3 TEST PROCEDURE 28 5.4 TEST SETUP 28 5.5 EUT OPERATION CONDITIONS 28 5.6 TEST RESULTS 29 6. TRANSMITTER TIMEOUT 31 6.1 LIMIT 31 6.2 TEST PROCEDURE 31 6.3 TEST SETUP 31 Page 4 of 38 Report No.: STS2601122W01 TABLE OF CONTENTS Page 6.4 TEST RESULTS 32 7. PERIODIC OPERATION 34 7.1 TEST PROCEDURE 34 7.2 TEST SETUP 34 7.3 EUT OPERATION CONDITIONS 34 7.4 TEST RESULTS 35 8. ANTENNA REQUIREMENT 37 8.1 STANDARD REQUIREMENT 37 8.2 EUT ANTENNA 37 APPENDIX 1-PHOTOS OF TEST SETUP 38 Page 5 of 38 Report No.: STS2601122W01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 20 Jan. 2026 STS2601122W01 ALL Initial Issue Page 6 of 38 Report No.: STS2601122W01 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part 15.231,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission N/A -- 15.205(a)/15.209/ 15.231(e) Radiated Spurious Emission PASS -- 15.231(e) Transmission requirement PASS -- 15.231(C) 20 dB Bandwidth PASS -- 15.203 Antenna Requirement PASS -- Note: (1) “N/A” denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020. 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 IC CAB ID: CN0086 Page 7 of 38 Report No.: STS2601122W01 1.2 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 RF output power, conducted ±0.751dB 2 Unwanted Emissions, conducted ±2.888dB 3 All emissions, radiated 9K-30MHz ±2.48dB 4 All emissions, radiated 30M-1GHz ±2.52dB 5 All emissions, radiated 1G-18GHz ±3.48dB 6 All emissions, radiated>18GHz ±4.18dB 7 Conducted Emission (9KHz-150KHz) ±2.48dB 8 Conducted Emission (150KHz-30MHz) ±2.52dB 9 Occupied Channel Bandwidth ±3.6% 10 Power Spectral Density, conducted ±1.214dB 11 Duty Cycle ±3.2% Page 8 of 38 Report No.: STS2601122W01 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name Rite Sensor HD Trade Name N/A Model Name RS-4000 Series Model N/A Model Difference N/A Product Description The EUT is a Rite Sensor HD Operation Frequency: 433.92MHz Modulation Type: ASK / FSK Antenna Designation: Internal Antenna Antenna Gain(Peak) 1.2dBi More details of EUT technical specification, please refer to the User Manual. Channel List Please refer to the Note 3. Power Rating Input: DC 3V Adapter N/A Battery Rated Voltage: 3 V Hardware version number N/A Software version number/FVIN N/A Connecting I/O Port(s) Please refer to the Note 1. Note: 1. For a more detailed features description, please refer to the manufacturer’s specifications orthe User Manual. 2. Table for filed Antenna Ant. Brand Model Name Antenna Type Connector Gain (dBi) Note 1 N/A RS-4000 Internal N/A 1.2 Antenna Note: The antenna information refer the manufacturer provide repo…

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Page 1 of 1 FCC ID: SX8RS4000 Test Setup Photo radiation (Below 1GHz) radiation (Above 1GHz)