2AOTUKDHM003DHandset

Rev 1/26/2023 (Changzhou Kaidi Electrical Inc.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 08‐07‐2024 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AOTUKDHM003D Changzhou Kaidi Electrical Inc. 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. Sincerely, Qin Yin/Manager Changzhou Kaidi Electrical Inc. Rev 1/26/2023 (Changzhou Kaidi Electrical Inc.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 08‐07‐2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AOTUKDHM003D Changzhou Kaidi Electrical Inc. 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. Sincerely, Qin Yin/Manager Changzhou Kaidi Electrical Inc.

Rev 1/26/2023 (Changzhou Kaidi Electrical Inc.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 08-07-2024 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID or Grantee Code: 2AOTUKDHM003D Applicant FRN: 0027151182 Changzhou Kaidi Electrical Inc. (“the applicant”) certifies that, as of the date of the filing of the application, Kaidi LLC. is our designated U.S. agent for service of process for the above referenced FCC ID. Changzhou Kaidi Electrical Inc. 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. Kaidi LLC. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Name: Kaidi LLC. U.S. Agent FRN: The agent for service of process does no other business with the FCC and does not have an FRN. Address: 131 Lucky Star Dr, Baldwyn, Ms 38824 Contact Person: Brittany Phillips Tel.: (662)601-7325 Email: [email protected] Sincerely, Changzhou Kaidi Electrical Inc. Kaidi LLC. Qin Yin Brittany Phillips

( Changzhou Kaidi Electrical Inc.) Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AOTUKDHM003D Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Block Diagram, Schematics, Operational Description Block Diagram .pdf, Schematics .pdf , Operation Description .pdf The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below: Short-term confidentiality requested: 180 days Exhibit Type File Name External Photos, Internal Photos, Test Setup Photos, User Manual External Photos.pdf, Internal Photos .pdf, Test Setup Photos .pdf, User Manual.pdf Sincerely, Qin Yin/Manager Changzhou Kaidi Electrical Inc.

(Changzhou Kaidi Electrical Inc.) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: August 07, 2024 SUBJECT: FCC Application for FCC ID: 2AOTUKDHM003D To Whom It May Concern: We, the undersigned, hereby authorize Tony Wei at EMTEK(NINGBO) CO., LTD. on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by EMTEK(NINGBO) CO., LTD. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, Qin Yin/Manager Changzhou Kaidi Electrical Inc.

Label and Label Location Model: KDHM003D FCC ID: 2AOTUKDHM003D

Report No. ENB2407120174W00102R Page 1 of 9 Ver.1.0 TEST REPORT $二维码$ Product Name : Handset Model Number : KDHM003D FCC ID : 2AOTUKDHM003D Prepared for : Changzhou Kaidi Electrical Inc. Address : JiangCun, Henglin Town, Changzhou City, Jiangsu Province, China Prepared by : EMTEK (NINGBO) CO., LTD. Address : No. 8, Building 8, Lane 216, Qingyi Road, Ningbo Hi-Tech Zone, Ningbo, Zhejiang, China Tel: +86-574-27907998 Fax: +86-574-27721538 Report Number : ENB2407120174W00102R Date(s) of Tests : July 12, 2024 to July 31, 2024 Date of Issue : August 06, 2024 Report No. ENB2407120174W00102R Page 2 of 9 Ver.1.0 TABLE OF CONTENT TEST REPORT..........................................................................................................................1 1. FACILITIES AND ACCREDITATIONS.......................................................................................................................................5 1.1. TEST FACILITY.......................................................................................................................................................................5 1.2. LABORATORY ACCREDITATIONS AND LISTINGS............................................................................................................5 2. GENERAL PRODUCT INFORMATION...................................................................................................................................6 3. LIMIT.......................................................................................................................................................................................7 4. TEST RESULTS.........................................................................................................................................................................8 Report No. ENB2407120174W00102R Page 3 of 9 Ver.1.0 Test Report Description Applicant : Changzhou Kaidi Electrical Inc. Address : JiangCun, Henglin Town, Changzhou City, Jiangsu Province, China Manufacturer : Changzhou Kaidi Electrical Inc. Address : JiangCun, Henglin Town, Changzhou City, Jiangsu Province, China EUT : Handset Model Name : KDHM003D Trademark : N/A The device described above is tested by EMTEK (NINGBO) CO., LTD. to determine the maximum emission levels emanating from the device and the severe levels of the device can endure and its performance criterion. This report shows the EUT to be technically compliant with the FCC 1.1310 and KDB 447498 D01 General RF Exposure Guidance v07 requirements. The test results are contained in this report and EMTEK (NINGBO) CO., LTD. is assumed full responsibility for the accuracy and completeness of these tests. This report applies to above tested sample only and shall not be reproduced in part without written approval of EMTEK (NINGBO) CO., LTD. Date of Test : July 12, 2024 to July 31, 2024 Prepared by : June Gao/Engineer Reviewer : Lucas Xu/Superviso Approved & Authorized Signer : Tony Wei/Manager Report No. ENB2407120174W00102R Page 4 of 9 Ver.1.0 Modified Information Version Report No. Revision Date Summary / ENB2407120174W00102R / Original Report Report No. ENB2407120174W00102R Page 5 of 9 Ver.1.0 1. Facilities And Accreditations 1.1. Test Facility All measurement facilities used to collect the measurement data are located at EMTEK (NINGBO) CO., LTD. No. 8, Building 8, Lane 216, Qingyi Road, Ningbo Hi-Tech Zone, Ningbo, Zhejiang, China The sites are constructed in conformance with the requirements of ANSI C63.7, ANSI C63.4 and CISPR Publication 32. 1.2. LABORATORY ACCREDITATIONS AND LISTINGS Site Description EMC Lab. : Accredited by CNAS The Certificate Registration Number is L6666. The Laboratory has been assessed and proved to be in compliance with CNAS-CL01:2018 (identical to ISO/IEC 17025:2017) Designation by FCC Designation Number: CN1354 Test Firm Registration Number: 427606 Accredited by A2LA The Certificate Number is 4321.03. The certificate is valid until May 31, 2025 Designation by Industry Canada The Conformity Assessment Body Identifier is CN0114 Name of Firm : EMTEK (NINGBO) CO., LTD. Site Location : No. 8, Building 8, Lane 216, Qingyi Road, Hi-Tech Zone, Ningbo, Zhejiang, China Report No. ENB2407120174W00102R Page 6 of 9 Ver.1.0 2. General Product Information Characteristics Description Product: Handset Model Number: KDHM003D Sample Number: ENB2407120174W001-1-1 Modulation: OOK Operating Frequency: 433.92MHz Number of Channels: 1 channel Max Transmit Power: 81.52 dBuV/m Antenna Type : PCB Antenna Antenna Gain: 0.0 dBi Power supply: DC 4.5V for Battery Temperature Range: -40°C ~ +85°C Date of Received: July 21, 2024 Note: for more details, please refer to the User’s manual of the EUT. Report No. ENB2407120174W00102R Page 7 of 9 Ver.1.0 3. Limit According to §15.249(i) and §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 KDB447498 D01 General RF Exposure Guidance V07 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] * [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where f(GHz) is the RF channel transmit frequency in GHz； Power and distance are rounded to the nearest mW and mm before calculation； The result is rounded to one decimal place for comparison； The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. We use 5mm as separation distance to calculate. Report No. ENB2407120174W00102R Page 8 of 9 Ver.1.0 4. Test Results Maximum measured transmitter power: EIRP=E+20log(d)-10…

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Report No.ENB2407120174W00101R Page 1 of 30 Ver.1.0 TEST REPORT $二维码$ Product Name : Handset Model Number : KDHM003D FCC ID : 2AOTUKDHM003D Prepared for : Changzhou Kaidi Electrical Inc. Address : JiangCun, Henglin Town, Changzhou City, Jiangsu Province, China Prepared by : EMTEK (NINGBO) CO., LTD. Address : No. 8, Building 8, Lane 216, Qingyi Road, Ningbo Hi-Tech Zone, Ningbo, Zhejiang, China Tel: +86-574-27907998 Fax: +86-574-27721538 Report Number : ENB2407120174W00101R Date(s) of Tests : July 12, 2024 to July 31, 2024 Date of Issue : August 06, 2024 Report No.ENB2407120174W00101R Page 2 of 30 Ver.1.0 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ............................................................................................................. 3 2 EUT TECHNICAL DESCRIPTION ........................................................................................................... 4 3 SUMMARY OF TEST RESULT ................................................................................................................ 5 4 TEST METHODOLOGY ........................................................................................................................... 6 4.1 GENERAL DESCRIPTION OF APPLIED STANDARDS .................................................................. 6 4.2 MEASUREMENT EQUIPMENT USED ............................................................................................ 6 4.3 DESCRIPTION OF TEST MODES ................................................................................................... 8 4.4 TEST SOFTWARE ........................................................................................................................... 8 5 FACILITIES AND ACCREDITATIONS ..................................................................................................... 9 5.1 FACILITIES ...................................................................................................................................... 9 5.2 LABORATORY ACCREDITATIONS AND LISTINGS ....................................................................... 9 6 TEST SYSTEM UNCERTAINTY ............................................................................................................ 10 7 SETUP OF EQUIPMENT UNDER TEST ............................................................................................... 11 7.1 RADIO FREQUENCY TEST SETUP 1 ............................................................................................ 11 7.2 RADIO FREQUENCY TEST SETUP 2 ............................................................................................ 11 7.3 CONDUCTED EMISSION TEST SETUP ....................................................................................... 13 7.4 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ........................................................... 14 7.5 SUPPORT EQUIPMENT ................................................................................................................ 14 8 TEST REQUIREMENTS ......................................................................................................................... 15 8.1 OCCUPIEDBANDWIDTH .............................................................................................................. 15 8.2 FREQUENCY STABILITY .............................................................................................................. 17 8.3 RADIATED SPURIOUS EMISSION ............................................................................................... 18 8.4 TRANSMISSION REQUIREMEN .................................................................................................. 26 8.5 CONDUCTED EMISSIONS TEST ................................................................................................. 28 8.6 ANTENNA APPLICATION .............................................................................................................. 29 Report No.ENB2407120174W00101R Page 3 of 30 Ver.1.0 1 TEST RESULT CERTIFICATION Applicant : Changzhou Kaidi Electrical Inc. Address : JiangCun, Henglin Town, Changzhou City, Jiangsu Province, China Manufacturer : Changzhou Kaidi Electrical Inc. Address : JiangCun, Henglin Town, Changzhou City, Jiangsu Province, China EUT : Handset Model Name : KDHM003D Trademark : N/A Measurement Procedure Used: APPLICABLE STANDARDS STANDARD TEST RESULT FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C PASS The above equipment was tested by EMTEK (NINGBO) CO., LTD. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10 (2013) and the energy emitted by the sample EUT tested as described in this report is in compliance with the requirements of FCC Rules Part 2 and Part 15.231 The test results of this report relate only to the tested sample identified in this report. Date of Test : July 12, 2024 to July 31, 2024 Prepared by : June Gao/Engineer Reviewer : Lucas Xu/Superviso Approved & Authorized Signer : Tony Wei/Manager Report No.ENB2407120174W00101R Page 4 of 30 Ver.1.0 2 EUT TECHNICAL DESCRIPTION Characteristics Description Product: Handset Model Number: KDHM003D Sample Number: ENB2407120174W001-1-1 Modulation: OOK Operating Frequency: 433.92 MHz Number of Channels: 1 channel Max Transmit Power: 81.52 dBuV/m Antenna Type : PCB Antenna Antenna Gain: 0.0 dBi Power supply: DC 4.5V for Battery Temperature Range: -40°C ~ +85°C Date of Received: July 21, 2024 Note: for more details, please refer to the User’s manual of the EUT. Report No.ENB2407120174W00101R Page 5 of 30 Ver.1.0 3 SUMMARY OF TEST RESULT FCC PartClause Test Parameter Verdict Remark 15.231(c) Occupied Bandwidth PASS 15.231(d) Frequency stability N/A 15.231(b) Radiated Spurious Emissions PASS 15.231(b) Transmission Requirement PASS 15.203 Antenna Requirement PASS 15.207(a) Conducted Emission N/A NOTE1: N/A (Not Applicable) RELATED SUBMITTAL(S) / GR…

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Manufacturer : Changzhou Kaidi Electrical Inc. Address : JiangCun, Henglin Town, Changzhou City, Jiangsu Province, China Model Name : KDHM003D Antenna Gain : 0.0 dBi