VZ43684SDoran TPMS Sensor for Truck

< DORAN MFG, LLC > < DORAN MFG, LLC > < 4362 Glendale Milford Rd, Cincinnati OH 45242 United States > Federal Communication Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA <2026-05-12> Attestation Statement according to 2.911(d)(5)(i) and 2.911(d)(5)(ii) FCC ID: < VZ43684S > TO WHOM IT MAY CONCERN: Hereby we certify 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. Further we certify that, as of the date of the filing of the application, < Doran Manufacturing, LLC > is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, _______________ (signature & company stamp) < Doran Manufacturing, LLC > <0017376450> < 4362 Glendale Milford Road, Cincinnati OH 45242 United States > < Kevin Shen > < +1-866-816-7233> < [email protected] >

< DORAN MFG, LLC > < DORAN MFG, LLC > < 4362 Glendale Milford Rd, Cincinnati OH 45242 United States > Federal Communication Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA <2026-05-12> Attestation Statement according to 2.911(d)(7) FCC ID: < VZ43684S > TO WHOM IT MAY CONCERN: We, < DORAN MFG, LLC > designate < DORAN MFG, LLC >, to act as U.S. agent for service of process. < DORAN MFG, LLC > hereby acknowledges the obligation of the U.S. agent for service of process. Further < DORAN MFG, LLC > 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. Sincerely _______________ (signature & company stamp) < DORAN MFG, LLC > <0017376450> < 4362 Glendale Milford Road, Cincinnati OH 45242 United States > < Kevin Shen > < +1-866-816-7233> < [email protected] > _______________ (signature & company stamp) < DORAN MFG, LLC > < 0017376450 > < 4362 Glendale Milford Road, Cincinnati OH 45242 United States > < Kevin Shen > < +1-866-816-7233 > < [email protected] >

DATE : 2026/05/12 DORAN MFG, LLC 4362 Glendale Milford Rd, Cincinnati OH 45242 United States Attn: Director of Certification Authority to Act as Agent On our behalf, I appoint below company and person: Name Chris Zhong Position EMC Manager Company Name LabSure Testing Services (Suzhou) Co., Ltd. Address Phase Il, No.16 Runsheng Road, Suzhou Industrial Park, Suzhou, People’s Republic of China. Tel / Fax Tel: +86-0512-62531270 E-Mail [email protected] 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, as specified by cetecom advanced GmbH, still resides with: Applicant name DORAN MFG, LLC Address 4362 Glendale Milford Rd, Cincinnati OH 45242 United States Yours sincerely, Signatory Name Kevin Shen Position VP of Product Development Company Name DORAN MFG, LLC Address 4362 Glendale Milford Rd, Cincinnati OH 45242 United States Tel / Fax +1-866-816-7233 E-Mail [email protected]

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 <2026-05-12> TO WHOM IT MAY CONCERN Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b) (4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name VZ43684S 3684-C For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Description The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device, which is planned for <2026-11-08> If you have any questions, please feel free to contact me at the address shown below. Sincerely, (Signed) Name / Title: Kevin Shen / VP of Product Development Company: DORAN MFG, LLC Address: 4362 Glendale Milford Rd, Cincinnati OH 45242 United States Phone: +1-866-816-7233 Fax: N/A E-Mail: [email protected]

HVIN:3684S Model:3684C FCC ID:VZ43684S IC:12007A-3684S

www.lab-sure.com E-mail: labsure @lab-sure.com Tianjin, China Tel: +86-022-58038033 Suzhou, China Tel: +86-0512-62531270 RF EXPOSURE REPORT Applicant : DORAN MFG, LLC Applicant Address : 4362 Glendale Milford Rd, Cincinnati OH 45242 United States Manufacturer : DORAN MFG, LLC Manufacturer Address : 4362 Glendale Milford Rd, Cincinnati OH 45242 United States Equipment Under Test : Doran TPMS Sensor for Truck Model No. : 3684-C Series Model No. : N/A Trade Mark : FCC ID : VZ43684S Report No. : LS-R26032016-3F04 Issue Data : Apr. 22, 2026 LabSure Testing Services (Suzhou) Co., Ltd. LabSure Testing Services (Suzhou) Co.,Ltd. Report No.: LS-R26032016-3F04 QR-4-106-F008 RevA0 Page 2 of 6 Table of Contents 1. General information ........................................................................................................ 5 1.1. Description of Equipment ............................................................................................... 5 1.2. Assess laboratory ........................................................................................................... 5 2. RF Exposure Evaluation ................................................................................................ 6 2.1. Requirement ................................................................................................................... 6 2.2. Estimation result ............................................................................................................. 6 LabSure Testing Services (Suzhou) Co.,Ltd. Report No.: LS-R26032016-3F04 QR-4-106-F008 RevA0 Page 3 of 6 Test Report Declare Standard Used: KDB 447498 D04 Interim General RF Exposure Guidance v01 We Declare: The equipment described above is tested by LabSure Testing Services (Suzhou) Co.,Ltd. and in the configuration tested the equipment complied with the standards specified above. The test results are contained in this test report and LabSure Testing Services (Suzhou) Co.,Ltd. is assumed of full responsibility for the accuracy and completeness of these tests. After test and evaluation, our opinion is that the equipment provided for test compliance with the requirement of the above FCC standards. Report No: LS-R26032016-3F04 Sample No: Y26032016-01 Date of Receipt: Mar. 31, 2026 Date of Test: Apr. 07, 2026 Prepared By: Reviewed By: Authorized By: Bacon Dong/Engineer Leon Wu/Director Chris Zhong/EMC Manager Note: This report applies to above tested sample only. This report shall not be reproduced in parts without written approval of LabSure Testing Services (Suzhou) Co., Ltd. The results in this report apply to the test sample(s) mentioned above at the time of the testing period only and are not to be used to indicate applicability to other similar products. This report does not imply that the product(s) has met the criteria for certification. The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. Applicant : DORAN MFG, LLC Address : 4362 Glendale Milford Rd, Cincinnati OH 45242 United States Manufacturer : DORAN MFG, LLC Address : 4362 Glendale Milford Rd, Cincinnati OH 45242 United States Equipment under Test : Doran TPMS Sensor for Truck Model No. : 3684-C Trade Mark : FCC ID : VZ43684S LabSure Testing Services (Suzhou) Co.,Ltd. Report No.: LS-R26032016-3F04 QR-4-106-F008 RevA0 Page 4 of 6 Revision History Rev. Revisions Issue Date Revised By --- Initial issue Apr. 22, 2026 LabSure Testing Services (Suzhou) Co.,Ltd. Report No.: LS-R26032016-3F04 QR-4-106-F008 RevA0 Page 5 of 6 1. General information 1.1. Description of Equipment EUT Description : Doran TPMS Sensor for Truck Model Number : 3684-C Serial Number : N/A Hardware Version : N/A Software Version : N/A Sample Type : Vehicle Device EUT function description : Please refer to user manual of this device Power supply : 3Vdc (internal CR2050HR) Type of Modulation FSK Support Frequency : 433.92MHz Conducted Power -1.35 dBm (Measured values) Antenna Type : Loop antenna Device Type : mobile device 1.2. Assess laboratory Lab Information Company Name: LabSure Testing Services (Suzhou) Co.,Ltd. Address: Phase Il, No.16 Runsheng Road, Suzhou Industrial Park, Suzhou, People’s Republic of China. Tel: +86-0512-62531270, E-mail: [email protected], www.lab-sure.com Accreditation Certificate A2LA (Certificate No.: 7346.01) LabSure Testing Services (Suzhou) Co.,Ltd. has been assessed and proved to be in compliance with A2LA. FCC (FCC Designation No.: CN1397) LabSure Testing Services (Suzhou) Co.,Ltd. has been recognized to perform compliance testing on equipment subject to the Commission's Declaration of Conformity (DoC) and Certification rules. IC (IC Designation No.: 32952; CAB No.:CN0182) LabSure Testing Services (Suzhou) Co.,Ltd. has been recognized to perform compliance testing on equipment subject to the Commission's Declaration of Conformity (DoC) and Certification rules. Note 1: All tests measurement facilities use to collect the measurement data are located at Phase II, No.16 Runsheng Road, Suzhou Industrial Park, Suzhou, China. Note 2: For below 30MHz, lab had performed measurements at test anechoic chamber and comparing to measurements obtained on an open field site. These measurements below 30MHz had been correlated to measurements performed on an OFS. Note 3: The test anechoic chamber in LabSure Testing Services (Suzhou) Co.,Ltd. had been calibrated and compared to the open field sites and the test anechoic chamber is shown to be equivalent to or worst case from the open field site. LabSure Testing Services (Suzhou) Co.,Ltd. Report No.: LS-R26032016-3F04 QR-4-106-F008 RevA0 Page 6 of 6 2. RF Exposure Evaluation 2.1. Requirement Per § 1.1307(b)(3)(i)(A), a single RF source is exempt RF device (from the requirement to show data demonstrating compliance to RF exposure limits, as previously mentioned) if the available maximum time-averaged power is no more than 1 mW, regardless of separation distance. This exemption a…

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Nam e and address of the ante nna manufacturer: Shanghai Shuangsheng Yingzhan Industrial Co., LTD., Buildi ng 3, No. 2640 Tingfeng Roa d, Zhujin g Town, Jinshan District, Shanghai Model numbe r of the antenna: 3.SATA6TP723S002 Operating Temperature : −40 °C~ 120 °C Frequency Range:300MHz~500MHz Antenna material：FR-4 Antenna thickness：1.6mm Antenna copper thickness：45um Antenna size:：As shown in the picture

www.lab-sure.com E-mail: labsure @lab-sure.com Tianjin, China Tel: +86-022-58038033 Suzhou, China Tel: +86-0512-62531270 RF TEST REPORT Applicant : DORAN MFG, LLC Applicant Address : 4362 Glendale Milford Rd, Cincinnati OH 45242 United States Manufacturer : DORAN MFG, LLC Manufacturer Address : 4362 Glendale Milford Rd, Cincinnati OH 45242 United States Equipment Under Test : Doran TPMS Sensor for Truck Model No. : 3684-C Trade Mark : FCC ID : VZ43684S IC : 12007A-3684S Report No. : LS-R26032016-3F03 Issue Data : Apr. 22, 2026 LabSure Testing Services (Suzhou) Co., Ltd. LabSure Testing Services (Suzhou) Co.,Ltd. Report No.: LS-R26032016-3F03 QR-4-106-F006 RevA0 Page 2 of 41 Table of Contents 1. Summary of Test Results ............................................................................................... 6 1.1. Summary of test result ................................................................................................... 6 2. General Test Information ............................................................................................... 7 2.1. Description of EUT ......................................................................................................... 7 2.2. Accessories of EUT ........................................................................................................ 7 2.3. Assistant equipment used for test .................................................................................. 7 2.4. Block diagram of EUT configuration for test .................................................................. 7 2.5. Test environment conditions .......................................................................................... 8 2.6. Test laboratory ............................................................................................................... 9 3. Test Configuration ........................................................................................................ 10 3.1. Test Mode .................................................................................................................... 10 4. Equipment Used During Test ....................................................................................... 11 5. Measurement uncertainty ............................................................................................. 12 6. Antenna requirement .................................................................................................... 13 6.1. Regulation .................................................................................................................... 13 6.2. Result ........................................................................................................................... 13 7. Restricted bands of Operation ..................................................................................... 14 7.1. Regulation .................................................................................................................... 14 7.2. Result ........................................................................................................................... 16 8. Radiated Spurious Emission ........................................................................................ 17 8.1. Regulation limit ............................................................................................................. 17 8.2. Block diagram of test setup .......................................................................................... 19 8.3. Test procedure ............................................................................................................. 21 8.4. Test result ..................................................................................................................... 23 9. Periodic operation characteristics ................................................................................ 28 9.1. Regulation .................................................................................................................... 28 9.2. Result ........................................................................................................................... 28 10. Fundamental frequencies/Field strength ..................................................................... 30 10.1. Regulation limit ............................................................................................................. 30 10.2. Block diagram of test setup .......................................................................................... 30 10.3. Test procedure ............................................................................................................. 31 10.4. Test result ..................................................................................................................... 33 11. Bandwidth(20dB) .......................................................................................................... 36 11.1. Regulation .................................................................................................................... 36 11.2. Calculation of the 20dB bandwidth limit ....................................................................... 36 11.3. Test Procedure ............................................................................................................. 36 LabSure Testing Services (Suzhou) Co.,Ltd. Report No.: LS-R26032016-3F03 QR-4-106-F006 RevA0 Page 3 of 41 11.4. Test result ..................................................................................................................... 38 12. Bandwidth(99%) ........................................................................................................... 39 12.1. Regulation .................................................................................................................... 39 12.2. Calculation of the 99% bandwidth limit ...........................................................…

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