2BB54-A1Car adapter

FCC Warnning: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.

Shenzhen Kehangda Electronic Technology Co., Ltd Room 5005, Block B, Yintian Laobing Business Building, Yantian Community, Xi'xiang Street, Bao'an District, Shenzhen, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2023/07/19 U.S. Agent Designation Shenzhen Kehangda Electronic Technology 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: 2BB54-A1): Name and company of U.S. agent: GSS SERVICE INC Physical U.S. address of agent: 6547 N Academy Blvd #226 Colorado USA FRN of U.S. agent: 0033402082 Email address of U.S. agent: [email protected] GSS SERVICE INC acknowledges their obligation to accept service of process on behalf of Shenzhen Kehangda Electronic Technology Co., Ltd Shenzhen Kehangda Electronic Technology Co., Ltd with the FRN [0034022616] accepts its obligation to maintain an agent for service of process in the United States for no less than one 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. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Jiang Tao Manager Shenzhen Kehangda Electronic Technology Co., Ltd Signature Michoux Logan PM GSS SERVICE INC 48_[mo del] US_Agent_2.911(d)(7) - U, V0 5

FCC ID: 2BB54-A1 External Photos of the EUT Photo 1 Photo 2 Photo 3 FCC ID: 2BB54-A1 Photo 4 Photo 5 Photo 6 FCC ID: 2BB54-A1 Photo 7

Label and Location Size: L: 3.0cm*W: 2.0cm Label and Location Model No.: A1 FCC ID : 2BB54-A1

FCC ID: 2BB54-A1 Internal Photos of the EUT Photo 1 Photo 2 Photo 3 BT Internal Antenna 5G WIFI Internal Antenna FCC ID: 2BB54-A1 Photo 4 Photo 5 Photo 6 FCC ID: 2BB54-A1 Photo 7

RF Exposure evaluation FCC ID: 2BB54-A1 Exposure category: General population/uncontrolled environment EUT Type: Production Unit Device Type: Mobile Device 1. Reference 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. KDB447498 D01: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 2. Limit Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100) * (900/f 2 )* 1.0 f/300 5 6 6 6 6 6 Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100) * (180/f 2 )* 0.2 f/1500 1.0 30 30 30 30 30 F=frequency in MHz *=Plane-wave equivalent power density 3. MPE Calculation Method Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 4. Antenna Information A1 can only use antennas certificated as follows provided by manufacturer; Antenna No. Model No. of antenna: Type of antenna: Gain of the antenna (Max.) Frequency range: BT / Internal antenna 2.00dBi for 2400-2500MHz; 5GWIFI / Internal antenna 1.96dBi for 5180-5240MHz 5. Manufacturing Tolerance BT GFSK(Peak) Channel Channel 00 Channel 39 Channel 78 Target (dBm) -2.0 -2.0 -2.0 Tolerance ±(dB) 1.0 1.0 1.0 π/4DQPSK (Peak) Channel Channel 00 Channel 39 Channel 78 Target (dBm) -2.0 -2.0 -2.0 Tolerance ±(dB) 1.0 1.0 1.0 8DPSK (Peak) Channel Channel 00 Channel 39 Channel 78 Target (dBm) -2.0 -2.0 -2.0 Tolerance ±(dB) 1.0 1.0 1.0 [5.2GHz WLAN] IEEE 802.11A (Average) Frequency (MHz) 5180 5220 5240 Target (dBm) 13.0 12.0 12.0 Tolerance ± (dB) 1.0 1.0 1.0 IEEE 802.11n20 (Average) Frequency (MHz) 5180 5220 5240 Target (dBm) 12.0 12.0 12.0 Tolerance ± (dB) 1.0 1.0 1.0 IEEE 802.11ac20 (Average) Frequency (MHz) 5180 5220 5240 Target (dBm) 12.0 12.0 12.0 Tolerance ± (dB) 1.0 1.0 1.0 IEEE 802.11n40 (Average) Frequency (MHz) 5190 / 5230 Target (dBm) 12.0 / 12.0 Tolerance ± (dB) 1.0 / 1.0 IEEE 802.11ac40 (Average) Frequency (MHz) 5190 / 5230 Target (dBm) 12.0 / 12.0 Tolerance ± (dB) 1.0 / 1.0 IEEE 802.11ac80 (Average) Frequency (MHz) / 5210 / Target (dBm) / 12.0 / Tolerance ± (dB) / 1.0 / 6. Standalone MPE Result As declared by the Applicant, the EUT is a wireless device used in a fix application, at least 20 cm from any body part of the user or nearby persons; from the maximum EUT RF output power, the minimum separation distance, r =20cm, as well as the gain of the used antenna refer to section 4, the RF power density can be obtained. Modulation Type Output power Antenna Gain (dBi) Antenna Gain (linear) MPE (mW/cm 2 ) MPE Limits (mW/cm 2 ) dBm mW BT -1.0 0.7943 2.0 1.5849 0.0003 1.0000 5.2GWIFI 13 19.9526 1.96 1.5704 0.0062 1.0000 Remark: 1. Output power (Peak) including turn-up tolerance; 2. MPE evaluate distance is 20cm from user manual provide by manufacturer. 7. simultaneous MPE Result 5.2GWIFI MPE (Ratio) BT MPE (Ratio) simultaneous MPE (Ratio) MPE Limits (Ratio) 0.0062 0.0003 0.0065 1.0000 8. Conclusion The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF Exposure of mobile device. ----------------THE END OF REPORT---------------

1. Antenna Description: Antenna type Internal antenna Model FS-0086 Frequency range 2400-2500MHz, 5150-5850MHz Manufacturer SHENZHEN FEISHENG ELECTRONICS CO.,LTD. 2. Antenna Photo: 3. Test Equipment & Conditions 3.1 Test instrument VSWR is tested using Agilent E5071B connected to a hand mechanism, and the status is free space. 3.2 Test environment and methods 4．Antenna Radiation Pattern

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART C TEST REPORT FCC PART 15 SUBPART E 15.407 Report Reference No. ..................... : FCC ID. ............................................ : CTA23071000402 2BB54-A1 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 ..................................... : Jul. 14, 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 ............................ : Shenzhen Kehangda Electronic Technology Co., Ltd Address ............................................ : Room 5005, Block B, Yintian Laobing Business Building, Yantian Community, Xi'xiang Street, Bao'an District, Shenzhen, China Test specification ...........................: Standard ........................................... : FCC Part 15 Subpart E 15.407 TRF Originator .................................. : Shenzhen CTA Testing Technology Co., Ltd. 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 .....................: Car adapter Trade Mark ....................................... : N/A Manufacturer .................................... : Shenzhen Kehangda Electronic Technology Co., Ltd Model/Type reference....................... : A1 Listed Models .................................. : A2, A3, A5, A6, A7, A8, A9, A11, A12, A13, A15, A16, A17, A18 Modulation ....................................... : OFDM Frequency .......................................... From 5180MHz-5240MHz Ratings ............................................. : DC 5.0V From external circuit Result................................................ : PASS Report No.: CTA23071000402 Page 2 of 35 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : Car adapter Model /Type : A1 Listed Models : A2, A3, A5, A6, A7, A8, A9, A11, A12, A13, A15, A16, A17, A18 Applicant : Shenzhen Kehangda Electronic Technology Co., Ltd Address : Room 5005, Block B, Yintian Laobing Business Building, Yantian Community, Xi'xiang Street, Bao'an District, Shenzhen, China Manufacturer : Shenzhen Kehangda Electronic Technology Co., Ltd Address : Room 5005, Block B, Yintian Laobing Business Building, Yantian Community, Xi'xiang Street, Bao'an District, Shenzhen, 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.: CTA23071000402 Page 3 of 35 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 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 6 2.4 Short description of the Equipment under Test (EUT) 6 2.5 EUT operation mode 6 2.6 Block Diagram of Test Setup 6 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 Test Description 8 3.5 Statement of the measurement uncertainty 8 3.6 Equipments Used during the Test 9 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 Emissions 13 4.3 Maximum Conducted Average Output Power 19 4.4 Power Spectral Density 21 4.5 Emission Bandwidth (26dB Bandwidth) 28 4.6 Frequency Stability 32 5 T E S T S E T U P P H O T O S O F T H E E U T ......................................... 34 6 P H O T O S O F T H E E U T ........................................................... 35 Report No.: CTA23071000402 Page 4 of 35 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 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 Subpart E—Unlicensed National Information Infrastructure Devices ANSI C63.10-2013: American National Standard for Testing Unlicensed Wireless Devices KDB789033 D02: General UNII Test Procedures New Rules v01r02 Report No.: CTA23071000402 Page 5 of 35 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuh…

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FCC ID: 2BB54-A1 Test Setup Photos of the EUT