2BU96-TD50448TPMS Active Tool

Ganzhou Jiawosi Automotive Electronics Co., Ltd. (March 28, 2026) 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:2BU96-TD50448 [Ganzhou Jiawosi Automotive Electronics 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)Owen.cao Ganzhou Jiawosi Automotive Electronics Co., Ltd. (March 28, 2026) 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:2BU96-TD50448 [Ganzhou Jiawosi Automotive Electronics 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)Owen.cao

Ganzhou Jiawosi Automotive Electronics Co., Ltd. Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 [March 28, 2026] U.S. Agent Designation [Ganzhou Jiawosi Automotive Electronics Co., Ltd.] acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought FCC ID: 2BU96-TD50448 Name and company of U.S. agent: [GLOCERTS TECHNOLOGY INC] Physical U.S. address of agent: [19784 SUNKISSED RIDGE DR, RIVERSIDE, CA 92507] FRN of U.S. agent: [0036339737] Email address of U.S. agent: [[email protected]] Telephone of U.S.agent: (626) 588-8039 [GLOCERTS TECHNOLOGY INC] acknowledges their obligation to accept service of process on behalf of [Ganzhou Jiawosi Automotive Electronics Co., Ltd.]. [Ganzhou Jiawosi Automotive Electronics Co., Ltd.] with the FRN [0038176210] accepts its obligation to maintain an agent for service of process in the United States for no less than 1 year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. Sincerely, Signature Signature [Owen.cao] [Huiying Fan] [Manager] [Director] [Ganzhou Jiawosi Automotive Electronics Co., Ltd.] [GLOCERTS TECHNOLOGY INC]

Ganzhou Jiawosi Automotive Electronics Co., Ltd. Model Difference Data:March 28, 2026 Product description: TPMS Active Tool Model name: TD-50448 Pro, TD-100, TD-100 Pro, TD-100 Plus, TD-50448 Pro max, TD- 50448 Plus, TD-50448Pro+, TPMS-50448, EL-50448 MAX Trade Name: N/A FCC ID: 2BU96-TD50448 All the model are the same circuit and RF module, only the name is different. Regards Sincerely Client’s signature : Client’s name / title : Owen.cao(Manager) Contact information / address:8th Building, 3rd Floor, Electronic Information Industrial Park, An Yuan County, Ganzhou City, Jiangxi Province

Ganzhou Jiawosi Automotive Electronics Co., Ltd. (March 28, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (TPMS Active Tool / TD-50448 Pro, TD- 100, TD-100 Pro, TD-100 Plus, TD-50448 Pro max, TD-50448 Plus, TD-50448Pro+, TPMS-50448, EL-50448 MAX / FCC ID: 2BU96-TD50448 ) 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 Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☒ Internal Photos ☐ NOTE 1 ☒ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature: Name: Owen.cao Title: Manager

Ganzhou Jiawosi Automotive Electronics Co., Ltd. (March 28, 2026) 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 CTB Testing Technology 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, Signature: Name: Owen.cao Title: Manager

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 6 Model: TD-50448 Pro External Photos Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 6 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 6 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 6 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 5 of 6 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 6 of 6

FCC ID LABEL: Label Location: FCC ID: 2BU96-TD50448 Model No.: TD-50448 Pro

Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 11 RF EXPOSURE REPORT Compiled by: Reviewed by: Approved by: Kai Chen Martin Feng Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Test item description: TPMS Active Tool FCC ID: 2BU96-TD50448 Trademark(s): N/A Model/Type reference: TD-50448 Pro, TD-100, TD-100 Pro, TD-100 Plus, TD-50448 Pro max, TD-50448 Plus, TD-50448Pro+, TPMS-50448, EL-50448 MAX Applicant’s name: Ganzhou Jiawosi Automotive Electronics Co., Ltd. Address: 8th Building, 3rd Floor, Electronic Information Industrial Park, An Yuan County, Ganzhou City, Jiangxi Province Manufacturer: Ganzhou Jiawosi Automotive Electronics Co., Ltd. Address: 8th Building, 3rd Floor, Electronic Information Industrial Park, An Yuan County, Ganzhou City, Jiangxi Province Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Mar. 03, 2026 Sample tested Date: Mar. 03, 2026 to Mar. 26, 2026 Issue Date: Mar. 26, 2026 Report No.: CTB26030309401RF02 Test Standards FCC CFR 47 part1, 1.1307(b), 1.1310, 47 CFR§2.1091; KDB 680106 D01 Wireless Power Transfer v04 Test Results PASS Remark: This is wireless charger EMF report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26030309401RF02 EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page2 of 11 Table of Contents Page 1 . GENERAL INFORMATION 3 1.1 . Independent Operation Mode 3 1.2 . Test Supporting System 3 2 .LIST OF TEST AND MEASUREMENT INSTRUMENTS 4 2.1 . For conducted emission at the mains terminals test 4 3. METHOD OF MEASUREMENT 5 3. 1.Applicable Standard 5 4. TEST RESULT 6 4.1. Conducted Emission at the Mains Terminals Test 6 4.2. E and H field Strength 7 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26030309401RF02 EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page3 of 11 1. GENERAL INFORMATION 1.1. Independent Operation Mode The basic operation mode is: 1.1.1. Normal transmitting mode 1.2. Test Supporting System Adapter Description: Adapter Model No.: HP18A-0902000-AU Power Input: AC100-240V~ 1.0A 50/60Hz Output: 9V2.0A DC Line: Unshielded, Detachable 1.2m Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26030309401RF02 EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page4 of 11 2.LIST OF TEST AND MEASUREMENT INSTRUMENTS 2.1. For conducted emission at the mains terminals test Item Equipment Brand Model No. Frequency Range Last calibration Calibrated until 1 EMF TESTER Wavecontrol SMP600/WP40 0-3 15SN0164/21W P1200029 2025/10/20 2026/10/19 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26030309401RF02 EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page5 of 11 3. METHOD OF MEASUREMENT 3. 1.Applicable Standard According to §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to §1.1310 and §2.1091 RF exposure is calculated. According to KDB 680106 D01 Wireless Power Transfer v04. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26030309401RF02 EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page6 of 11 4. TEST RESULT 4.1. Conducted Emission at the Mains Terminals Test Note: Measurements should be made from all sides and the top of the primary/client pair, with the 20 cm-0cm measured from the center of the top, and 15cm-0cm measured from the center of the rest Test Procedure: a) The RF exposure test was performed on 360 degree turn table in anechoic chamber. b) 20 cm-0cm measured from the center of the top, and 15cm-0cm measured from the center of the rest sides. c) The turn table was rotated 360d degree to search of highest strength. d) The highest emission level was recorded and compared with limit as soon as measurement of each points were completed. e) The EUT were measured according to the dictates of KDB 680106 D01 Wireless Power Transfer v04. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26030309401RF02 EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page7 of 11 4.2. E and H field Strength H-Filed Strength at 20 cm from the edges surrounding the EUT (A/m) Frequency Range (MHz) Test Position A Test Position B Test Position C Test Position D Limits (A/m) 0.110-0.205 0.22 0.21 0.18 0.20 1.63 H-Filed Strength at 20 cm from the top of the EUT (A/m) Frequency Range (MHz) Test Position E Limits (A/m) 0.110-0.205 0.22 1.63 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26030309401RF02 EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page8 of 11 H-Filed Strength at 18 cm from the edges surrounding the EUT (A/m) Frequency Range (MHz) Test Position A Test Position B Test Position C Test Position D Limits (A/m) 0.110-0.205 0.26 0.25 0.27 0.25 1.63 H-Filed Strength at 18 cm from the top of the EUT (A/m) Frequency Range (MHz) Test Position E Limits (A/m) 0.110-0.205 0.27 1.63 H-Filed Strength at 16 cm from the edges surrounding the EUT (A/m) Frequency Range (MHz) Test Position A Test Position B Test Position C Test Position D Limits (A/m) 0.110-0.205 0.30 0.28 0.27 0.26 1.63 H-Filed Strength at 16 cm from the top of the EUT (A/m) Frequency Range (MHz) Test Position E Limits (A/m) 0.110-0.205 0.30 1.63…

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东莞市亚富智能科技有限公司 DongGuan YaFai Intelligent Technology Co.,Ltd. Tel: 86-0769-8225 8010 Fax: 86-0769-8225 8020 E-mail: [email protected] Web Site：www.myx555.com Add：东莞市虎门镇大宁大板路66号万亨科技园A栋三楼B区 承 认 书 SPECIFICATION FOR APPROVED 物 料 名 称 Product Name: RFID low-frequency antenna 物 料 编 码 Part N.O: RF35N681J-125K-NN 物 料 描 素 Specification: R10x35mm/Nix∮0.35mm/2UE-Nx680±10uH@125KHz/1V 客 户 名 称 Customer Name: / 版 本 Version : VR0 日 期 Date : 2025-04-15 供应商确认 APPROVED BY VENDOR 制作 Prepared By 审核 Checked By 批准 Approved By Yang 客户确认 APPROVED BY CUSTOMER 确认 Approved By 审核 Checked By 批准 Approved By No. 66, Wanheng Technology Park, Building A, 3rd Floor, Zone B, Daning Daban Road, Humen Town, Dongguan City. 东莞市亚富智能科技有限公司 DongGuan YaFai Intelligent Technology Co.,Ltd. Tel: 86-0769-8225 8010 Fax: 86-0769-8225 8020 E-mail: [email protected] Web Site：www.myx555.com Add：东莞市虎门镇大宁大板路66号万亨科技园A栋三楼B区 变更履历表 Change History Table 版本 versions 变更内容描述 Description of Changes 工程 project 日期 VR0 初次发行 First releaseYang 2025-04-15 No. 66, Wanheng Technology Park, Building A, 3rd Floor, Zone B, Daning Daban Road, Humen Town, Dongguan City. Date 东莞市亚富智能科技有限公司 DongGuan YaFai Intelligent Technology Co.,L td. Tel: 86-0769-8225 8010 Fax: 86-0769-8225 8020 E- mail: [email protected] Web Site：www.myx555.com Add：东莞市虎门镇大宁大板路66号万亨科技园A栋三楼B区 一、产品 主要 尺寸 D im ens io n(mm )： 二、主要 材料Main Mat erial : Ite m Material Descripti on Remar k 1 copper wireΦ0.35mm/2UE-N 155°C 2 m agnetic core R10*35mm/Ni 3 External conne ction cable drivepipeBlack PVC heat shrink tubing 30mm 22#UL1007 Red/Black Single Branch Line+PH3P-2 .0mm White plug 4 No. 66, Wanheng Technology Park, Building A, 3rd Floor, Zone B, Daning Daban R oad, Humen Town, Dongguan City. 东莞市亚富智能科技有限公司 DongGuan YaF ai Intelligent T echnology Co.,Ltd. Tel: 86-0769-8225 8010 Fax: 86-0769-8225 8020 E-mail: [email protected] Web Site：www.myx555.com Add：东莞市虎门镇大宁大板路66号万亨科技园A栋三楼B区 三、等效原理图Schematic: Notes: 1. L :Ferrite Core Coil Inductance 电感; 2.R:Copper Resistance 铜线阻抗； 四、电气性能Electrical Characteristics： Parameter （参数） Symbol （符号） Conditions (测试条件） Min. （最小值） Avg. （平均值） Max. （最大值） Unit （单位） Inductance （电感量） L 125KHz/1V 670 680 690 uH Q min Coil （品质因素） Q 125KHz/1V 50 60 NA Resistance （内阻） DCR 125KHz/1V 0.8 1.0 Ω 温馨提示： friendly reminder (At TA=25°C)环境温度25摄氏度测试； (At TA = 25°C) Test conducted under environmental temperature of 25 degrees Celsius; 金属会弱化磁场，靠近金属会引起电感量和Q值的改变，请尽量远离金属. Metals will weaken the magnetic field. Being close to metals will cause changes in inductance and Q value. Please stay away from metals as much as possible. No. 66, Wanheng Technology Park, Building A, 3rd Floor, Zone B, Daning Daban Road, Humen Town, Dongguan City. Manufacturer : Ganzhou Jiawosi Automotive Electronics Co., Ltd. 20mm 3 5mm 8mm WIRE /LENGTH : NUM TURNS : 73TS Φ0.25mm×1PCS /280mm Address: 8th Building, 3rd Floor, Electronic Information Industrial Park, An Yuan County, Ganzhou City, Jiangxi Province

Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 20 TEST REPORT Test item description: TPMS Active Tool FCC ID: 2BU96-TD50448 Trademark(s): N/A Model/Type reference: TD-50448 Pro, TD-100, TD-100 Pro, TD-100 Plus, TD-50448 Pro max, TD-50448 Plus, TD-50448Pro+, TPMS-50448, EL-50448 MAX Applicant’s name: Ganzhou Jiawosi Automotive Electronics Co., Ltd. Address: 8th Building, 3rd Floor, Electronic Information Industrial Park, An Yuan County, Ganzhou City, Jiangxi Province Manufacturer: Ganzhou Jiawosi Automotive Electronics Co., Ltd. Address: 8th Building, 3rd Floor, Electronic Information Industrial Park, An Yuan County, Ganzhou City, Jiangxi Province Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Mar. 03, 2026 Sample tested Date: Mar. 03, 2026 to Mar. 26, 2026 Issue Date: Mar. 26, 2026 Report No.: CTB26030309401RF01 Test Standards FCC CFR Title 47 Part 15 Subpart E Section 15.209 ANSI C63.10:2020 Test Results PASS Remark: This is 125kHz radio test report. Compiled by: Reviewed by: Approved by: Kai Chen Martin Feng Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26030309401RF01 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 20 TABLE OF CONTENT Test Report Declaration 1. TESTSUMMARY .......................................................................................................... 4 2. MEASUREMENTUNCERTAINTY ................................................................................ 5 3. PRODUCT INFORMATION AND TESTSETUP........................................................... 6 3.1 Product Information ....................................................................................................... 6 3.2 Test Setup Configuration .............................................................................................. 6 3.3 Support Equipment ....................................................................................................... 6 3.4 Test Mode ..................................................................................................................... 7 3.5 Test Environment .......................................................................................................... 7 4. TEST FACILITY AND TEST INSTRUMENTUSED ...................................................... 8 4.1 TestFacility .................................................................................................................... 8 4.2 Test InstrumentUsed ..................................................................................................... 8 5. AC POWER LINE CONDUCTEDEMISSION ............................................................. 10 5.1 Block Diagram Of Test Setup ..................................................................................... 10 5.2 Limit ............................................................................................................................. 10 5.3 Test procedure ............................................................................................................ 10 5.4 Test Result .................................................................................................................. 12 6. RADIATEDEMISSION ................................................................................................ 13 6.1 Block Diagram Of Test Setup ..................................................................................... 13 6.2 Limit ............................................................................................................................. 14 6.3 Test procedure ............................................................................................................ 15 6.4 Test Result .................................................................................................................. 16 7. ANTENNAREQUIREMENT ........................................................................................ 19 8. EUT TEST SETUPPHOTOGRAPHS ......................................................................... 20 Page Note: N/A means not applicable) Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26030309401RF01 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 20 VERSION Report No. Issue Date Description Approved CTB26030309401RF01 Mar. 26, 2026 Original Valid Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26030309401RF01 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 20 1. TESTSUMMARY The Product has been tested according to the following specifications: Test Item Test Requirement Test method Result AC Power Line Conducted Emission 47 CFR Part 15 Subpart C Section 15.207 ANSI C63.10-2020 N/A Radiated Emission 47 CFR Part 15 Subpart C Section 15.209; 15.225(a)(b)(c)(d) ANSI C63.10-2020 PASS Antenna requirement 47 CFR Part 15 Subpart C Section 15.203 ANSI C63.10-2020 PASS Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26030309401RF01 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 5 of 20 2. MEASUREMENTUNCERTAINTY Where relevant, the following measurement uncertainty levels have been estimated for tests performed on the Product as specified in CISPR 16-4-2. T…

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Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 3 Model: TD-50448 Pro Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 3 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 3

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 1 Model: TD-50448 Pro Radiated Emission 30MHz-1GHz 9KHz-30MHz