2AM3B-CM-DRCWireless winch remote control system for vehicle

Sincerely, Name/Title： LEO Zheng/Manager Company: Ningbo Chima winch co.,ltd. Address: Wangjiaqiao Village,Dongqiaotown, Yinzhou District Ningbo, Zhejiang Province China Phone: 0574-83082762 Fax: 0574-82819139 E-Mail: [email protected]

FCC ID: 2AM3B-CM-DRC External Photos of the EUT Photo 1 Photo 2 Photo 3 FCC ID: 2AM3B-CM-DRC Photo 4 Photo 5 Photo 6 FCC ID: 2AM3B-CM-DRC Photo 7

Label and Location Size: L: 2.0cm*W: 1.0cm Label and Location FCC ID : 2AM3B-CM-DRC

FCC ID: 2AM3B-CM-DRC Internal Photos of the EUT Photo 1 Photo 2 Photo 3 FCC ID: 2AM3B-CM-DRC Photo 4 Photo 5 Photo 6 315MHz PCB Antenna FCC ID: 2AM3B-CM-DRC Photo 7 Photo 8 Photo 9 FCC ID: 2AM3B-CM-DRC Photo 10 Photo 11 Photo 12 FCC ID: 2AM3B-CM-DRC Photo 13

RF Exposure evaluation FCC ID: 2AM3B-CM-DRC 1.1. 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 §2.1093 RF exposure requirement KDB447498 v06: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 1.2. Requirement According to KDB447498 D01 General RF Exposure Guidance v06 Section 4.3.1 Standalone SAR test exclusion considerations: “Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition, listed below, is satisfied. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions.22 The 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 (see 5) of section 4.1). To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, typically in the SAR measurement or SAR analysis report, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting is required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for the SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions; for example, handheld PTT two-way radios, handsets, laptops & tablets etc.23 “ [(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 • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below 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 according to 5) in section 4.1 is applied to determine SAR test exclusion. 1.3. Manufacturing tolerance Freq. (MHz) Field strength(max)(dBuV/m) EIRP (max) (dBm) Turn-up Power (dB) Max tune up power (dBm) [P] 315.0MHz 82.82 -12.44 -12.0±1 -11.0 Note: EIRP=E-104.8+20logD, D=3 Page 2 of 2 2. E v a l u a t i o n R e s u l t Evaluation Results Band/Mode f (GHz) Antenna Distance (mm) RF output power (including tune-up tolerance) SAR Test Exclusion Threshold SAR Test Exclusion dBm mW SRD 0.315 5 -11.0 0.0794 0.0089<3.0 Yes 3. C o n c l u s i o n The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB 447498 v06 .....................End of Report.........................

1. Antenna Description: Antenna type PCB Antenna Model CM-DRC Frequency range 315.00MHz Manufacturer Ningbo Chima winch co.,ltd. Gain 0.00 dBi 2. Antenna Photo:

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China FCC PART 15 SUBPART C TEST REPORT FCC PART 15.231 Report Reference No. ..................... : FCC ID. ............................................ : CTA23121500201 2AM3B-CM-DRC Compiled by ( position+printed name+signature) .. : File administrators Zoey Cao Supervised by ( position+printed name+signature) .. : Project Engineer Amy Wen Approved by ( position+printed name+signature) .. : RF Manager Eric Wang Date of issue ..................................... : Dec. 22, 2023 Testing Laboratory Name .............: Shenzhen CTA Testing Technology Co., Ltd. Address ............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name ............................ : Ningbo Chima winch co.,ltd. Address ............................................ : Wangjiaqiao Village, Dongqiaotown, Yinzhou District Ningbo, Zhejiang Province, China Test specification ...........................: Standard ........................................... : FCC Part 15.231 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description .....................: Wireless winch remote control system for vehicle Trade Mark ....................................... : N/A Manufacturer .................................... : Ningbo Chima winch co.,ltd. Model/Type reference....................... : CM-DRC Listed Models .................................. : N/A Modulation ....................................... : FSK Frequency .......................................... 315.00MHz Ratings ............................................. : DC 3.0V From Battery Result................................................ : PASS Report No.: CTA23121500201 Page 2 of 24 T E S T R E P O R T Equipment under Test : Wireless winch remote control system for vehicle Model /Type : CM-DRC Listed Models : N/A Applicant : Ningbo Chima winch co.,ltd. Address : Wangjiaqiao Village, Dongqiaotown, Yinzhou District Ningbo, Zhejiang Province, China Manufacturer : Ningbo Chima winch co.,ltd. Address : Wangjiaqiao Village, Dongqiaotown, Yinzhou District Ningbo, Zhejiang Province, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA23121500201 Page 3 of 24 Contents 1 T E S T S T A N D A R D S ................................................................. 4 2 S U M M A R Y ............................................................................ 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Equipment Under Test 5 2.4 Short description of the Equipment under Test (EUT) 5 2.5 Block Diagram of Test Setup 5 2.6 Special Accessories 5 2.7 Related Submittal(s) / Grant (s) 6 2.8 Modifications 6 3 T E S T E N V I R O N M E N T .............................................................. 7 3.1 Address of the test laboratory 7 3.2 Test Facility 7 3.3 Environmental conditions 7 3.4 Summary of measurement results 8 3.5 Statement of the measurement uncertainty 8 3.6 Equipments Used during the Test 8 4 T E S T C O N D I T I O N S A N D R E S U L T S ........................................... 10 4.1 AC Power Conducted Emission 10 4.2 Radiated Emission 11 4.3 20dB Bandwidth 14 4.4 Deactivation Time 15 4.5 Antenna Requirement 16 5 T E S T S E T U P P H O T O S O F T H E E U T ......................................... 17 6 P H O T O S O F T H E E U T ........................................................... 18 Report No.: CTA23121500201 Page 4 of 24 1 T E S T S T A N D A R D S The tests were performed according to following standards: FCC Rules Part 15.231:Periodic operation in the band 40.66-40.70 MHz and above 70 MHz. ANSI C63.10:2013 : American National Standard for Testing Unlicensed Wireless Devices Report No.: CTA23121500201 Page 5 of 24 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample : Dec. 15, 2023 Testing commenced on : Dec. 15, 2023 Testing concluded on : Dec. 22, 2023 2.2 Product Description Product Name: Wireless winch remote control system for vehicle Model/Type reference: CM-DRC Testing sample ID： CTA231215002-1# (Engineer sample), CTA231215002-2#(Normal sample) Power supply: DC 3.0V From Battery Modulation: FSK Operation frequency: 315.00MHz Channel number: 1 Antenna type: PCB antenna Antenna gain: 0.00 dBi 2.3 Equipment Under Test Power supply system utilised Power supply voltage : ○ 230V / 50 Hz ○ 120V / 60Hz ○ 12 V DC ○ 24 V DC ● Other (specified in blank below) DC 3.0V From Battery 2.4 Short description of the Equipment under Test (EUT) This is a Wireless winch remote control system for vehicle. For more details, refer to the user’s manual of the EUT. 2.5 Block Diagram of Test Setup 2.6 Special Accessories Follow auxiliary equipment(s) test with EUT that provided by the manufacturer or laboratory is listed as follow: Description Manufacturer Model Technical Parameters Certificate Provided by / / / / / / / / / / / / EUT DC 3.0V From Battery Report No.: CTA23121500201 Page 6 of 24 2.7 Related Submittal(s) / Grant (s) This submittal(s) (test report) is intended for the device filing to comply with Section 15.231 of the FCC Part 15, Subpart C Rules. 2.8 Modifications No modifications were implemented to meet testing criteria. Report No.: CTA23121500201 Page 7 of 24 3 T E S T E N V I R O N M E …

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FCC ID: 2AM3B-CM-DRC Test Setup Photos of the EUT