2BK4E-K5EMK5EM Access control

Attestation Statements (September 18, 2024) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for FCC ID: 2BK4E-K5EM (Shenzhen Guanghuifeng Technology Co., LTD), the undersigned, hereby authorize (NEWENERGYER LIMITED) to act as our designated U.S. agent for service of process, (Shenzhen Guanghuifeng Technology Co., LTD) 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. (NEWENERGYER LIMITED) accepts the responsibility to act as designated U.S. agent for service of process, provides 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. Applicant Information： Company name: Shenzhen Guanghuifeng Technology Co., LTD Contact Name: Ning cheng chao Address: Room 107, Building A, Chuangyeyihao Building, No. 43, Yanshan Road, Yanshan Community, Merchants Street, Nanshan District, Shenzhen Telephone No: 13538214502 Email: [email protected] FRN: 0035944495 Signature [Ning cheng chao] U.S. Agent Information: Company Name: NEWENERGYER LIMITED Address: 1818 S Patton Ct, Denver, CO, 80219 Contact Name: CHUN LIU Telephone No: 213 289 5042 Email: [email protected] FRN: 0034665885 Signature [CHUN LIU]

Shenzhen Guanghuifeng Technology Co., LTD (September 18, 2024) 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: 2BK4E-K5EM [Shenzhen Guanghuifeng Technology 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. Sincerely, (Applicant signature) (Applicant printed name) Ning cheng chao Shenzhen Guanghuifeng Technology Co., LTD (September 18, 2024) 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: 2BK4E-K5EM [Shenzhen Guanghuifeng Technology 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) Ning cheng chao

Shenzhen Guanghuifeng Technology Co., LTD Model Difference Data：September 18, 2024 Product description: K5EM Access control Model name: K5EM, S601EM, RF004, S03EM, S100EM, K9 Trade Name: N/A FCC ID: 2BK4E-K5EM All the model are the same circuit and RF module, only the model names are different. Regards Sincerely Client’s signature : Client’s name / title : Ning cheng chao（MANAGER） Contact information / address：Room 107, Building A, Chuangyeyihao Building, No. 43, Yanshan Road, Yanshan Community, Merchants Street, Nanshan District, Shenzhen

Shenzhen Guanghuifeng Technology Co., LTD (September 18, 2024) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (K5EM Access control / K5EM, S601EM, RF004, S03EM, S100EM, K9 / FCC ID: 2BK4E-K5EM) 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: Ning cheng chao Title: MANAGER

Shenzhen Guanghuifeng Technology Co., LTD (September 18, 2024) 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: Ning cheng chao Title: MANAGER

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 3 Model: K5EM External Photos 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

FCC ID LABEL: Label Location: FCC ID: 2BK4E-K5EM Model No.: K5EM

RF EXPOSURE REPORT Compiled by: Reviewed by: Approved by: Zhou Kui Arron Liu 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. Product Name: K5EM Access control FCC ID: 2BK4E-K5EM Trademark: N/A Model Number: K5EM, S601EM, RF004, S03EM, S100EM, K9 Prepared For: Shenzhen Guanghuifeng Technology Co., LTD Address: Room 107, Building A, Chuangyeyihao Building, No. 43, Yanshan Road, Yanshan Community, Merchants Street, Nanshan District, Shenzhen Manufacturer: Shenzhen Guanghuifeng Technology Co., LTD Address: Room 107, Building A, Chuangyeyihao Building, No. 43, Yanshan Road, Yanshan Community, Merchants Street, Nanshan District, Shenzhen 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: Aug. 27, 2024 Sample tested Date: Aug. 27, 2024 to Sep. 19, 2024 Issue Date: Sep. 19, 2024 Report No.: CTB240919020RFX 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.: CTB240919020RFX EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page2 of 6 Table of Contents Page 1 .LIST OF TEST AND MEASUREMENT INSTRUMENTS 3 1.1 . For conducted emission at the mains terminals test 3 3. METHOD OF MEASUREMENT4 3. 1.Applicable Standard4 4. TEST RESULT4 4.1. Conducted Emission at the Mains Terminals Test 4 4.3. E and H field Strength 5 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB240919020RFX EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page3 of 6 1.LIST OF TEST AND MEASUREMENT INSTRUMENTS 1.1. 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 2024.04.20 2025.04.19 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB240919020RFX EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page4 of 6 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. 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.: CTB240919020RFX EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page5 of 6 4.3. E and H field Strength H-Filed Strength at 4 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 0.66 0.69 0.72 0.67 1.63 H-Filed Strength at 4 cm from the top of the EUT (A/m) Frequency Range (MHz) Test Position E Limits (A/m) 0.110-0.205 0.72 1.63 H-Filed Strength at 2 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 0.79 0.77 0.78 0.74 1.63 H-Filed Strength at 2 cm from the top of the EUT (A/m) Frequency Range (MHz) Test Position E Limits (A/m) 0.110-0.205 0.79 1.63 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB240919020RFX EMF Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page6 of 6 The probe center is 1.65cm from the coil surface, according to KDB 680106, date at 0cm must be estimated through a modle, and then the model must be validated with the actual measurements at 2cm. Using Biot-Savart Law, the value of 2cm can be estimated through the test result of 4cm H-Filed Strength at 2 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 0.76 0.78 0.75 0.71 1.63 H-Filed Strength at 2 cm from the top of the EUT (A/m) Frequency Range (MHz) Test Position E Limits (A/m) 0.110-0.205 0.76 1.63 Using Biot-Savart Law, the value of 0cm can be estimated through the test result of 2cm H-Filed Strength at 0 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 0.85 0.82 0.84 0.86 1.63 H-Filed Strength at 0 cm from the top of the EUT (A/m) Frequency Range (MHz) Test Position E Limits (A/m) 0.110-0.205 0.86 1.63 The difference between measurements and estimates is no more than 30% So the estimates in 0cm is ok ※※※※※THE END※※※※※

ANT PHTOT All measurements were performed radiated and therefore additional antenna gain documentation is not required.

TEST REPORT Compiled by: Reviewed by: Approved by: Zhou Kui Arron Liu 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. Product Name: K5EM Access control FCC ID: 2BK4E-K5EM Trademark: N/A Model Number: K5EM, S601EM, RF004, S03EM, S100EM, K9 Prepared For: Shenzhen Guanghuifeng Technology Co., LTD Address: Room 107, Building A, Chuangyeyihao Building, No. 43, Yanshan Road, Yanshan Community, Merchants Street, Nanshan District, Shenzhen Manufacturer: Shenzhen Guanghuifeng Technology Co., LTD Address: Room 107, Building A, Chuangyeyihao Building, No. 43, Yanshan Road, Yanshan Community, Merchants Street, Nanshan District, Shenzhen 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: Aug. 27, 2024 Sample tested Date: Aug. 27, 2024 to Sep. 12, 2024 Issue Date: Sep. 12, 2024 Report No.: CTB240912004RFX Test Standards FCC Part 15 C Test Results PASS Remark: This is125kHz test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.:CTB240912004RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 20 TABLE OF CONTENTS 1. GENERAL INFORMATION .......................................................................................................................... 3 1.1. Report information ................................................................................................................................... 3 1.2. Measurement Uncertainty ....................................................................................................................... 3 1.3. Test Facility ............................................................................................................................................. 3 1.4. Test Uncertainty ...................................................................................................................................... 4 2. PRODUCT DESCRIPTION ........................................................................................................................... 5 2.1. EUT Description ...................................................................................................................................... 5 2.2. Block Diagram of EUT Configuration ...................................................................................................... 5 2.3. Test Conditions........................................................................................................................................ 5 2.4. DescriptionOfSupport Units (Conducted Mode) ...................................................................................... 6 3. TEST RESULTS SUMMARY ........................................................................................................................ 7 4. TEST EQUIPMENT USED ............................................................................................................................ 8 4.1. MEASUREMENT INSTRUMENTS LIST ................................................................................................. 8 5. CONDUCTED EMISSION TEST................................................................................................................. 11 5.1. Block Diagram of Test Setup ................................................................................................................. 11 5.2. Test Standard ........................................................................................................................................ 11 5.3. Conducted Emission Limit ..................................................................................................................... 11 5.4. EUT Configuration on Test .................................................................................................................... 11 5.5. Operating Condition of EUT .................................................................................................................. 11 5.6. Test Procedure ...................................................................................................................................... 12 5.7. Test Result ............................................................................................................................................ 12 6. RADIATED EMISSION MEASUREMENT .................................................................................................. 13 6.1. Block Diagram of Test Setup ................................................................................................................. 13 6.2. Test Standard ........................................................................................................................................ 14 6.3. EMI Test Receiver Setup ...................................................................................................................... 14 6.4. Test Procedure ...................................................................................................................................... 14 6.5. Test Result ............................................................................................................................................ 14 7. OCCUPIED BANDWIDTH ...................................................................................…

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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: 2BK4E-K5EM 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: 2BK4E-K5EM Radiated Emission 9KHz-30MHz 30MHz-1GHz