2BXGC-MD-K88ZDoor Access Control Keypad

Shenzhen Jiuai Technology Co., Ltd (Applicant and U.S Agent are Separate Parties) TO： Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia,MD 21046,USA ATTENTION: FCC Certification - Section 2.911(d)(7) Information Designated U.S. Acett Company Name: Quirarte's Imports Inc FRN：0034562744 Contact Name：zhu hua wen Company address：3625 N Parkway Dr, Fresno, CA 93722, USA Telep hone No：13802938527 Email：40352638@q q.com This letter is to confirm that we (Quirarte's Imports Inc) have accepted the responsibility to act as the Designated U.S. Agent for Service of Process as required by section 47 CFR 2.911(d)(7) on behalf of the Applicant noted below. Applicant Signature： Date：2026/7/17 Si g ned by (Printed Name/Title)： Ning shun xiang / Bos U.S.Agent Signature： Date：2026/7 /17 Signed by (Printed Name/Title)：zhu hua wen The Applicant acknowledges that they must maintain an agent for no less than and importation OR the conclusion of any Commission-related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S.Agent information above changes. Applicant Company name： Shenzhen Jinghongxin Technology Co., Ltd FCC ID： FRN: Contact Name： Ning shun xiang Address： Room 201, Building 59, Langkou Industrial Park, Langkou Community, Da lang Street, Longhua District, Shenzhen, China Email： hechuang2020@gm ail.com s 2BXGC-MD-K88Z 0038719456

Shenzhen Jinghongxin Technology Co., Ltd (July 30, 2026) 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:2BXGC-MD-K88Z [Shenzhen Jinghongxin 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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, (Applicant signature) (Applicant printed name)Ning shun xiang Shenzhen Jinghongxin Technology Co., Ltd (July 30, 2026) 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:2BXGC-MD-K88Z [Shenzhen Jinghongxin 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 shun xiang

Shenzhen Jinghongxin Technology Co., Ltd Model Difference Data:July 30, 2026 Product description: Door Access Control Keypad Model name: MD- K88Z, MD88, MD89, MD99, S31D, S31, MD-K8, MD-K8S Trade Name: hongjin FCC ID: 2BXGC-MD-K88Z All the model are the same circuit and RF module, only the model names and appearance colors are different. Regards Sincerely Client’s signature : Client’s name / title : Ning shun xiang(Boss) Contact information / address:Room 201, Building 59, Langkou Industrial Park, Langkou Community, Da lang Street, Longhua District, Shenzhen, China

Shenzhen Jinghongxin Technology Co., Ltd (July 30, 2026) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Door Access Control Keypad / MD- K88Z, MD88, MD89, MD99, S31D, S31, MD-K8, MD-K8S / FCC ID: 2BXGC-MD- K88Z ) 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 shun xiang Title: Boss

Shenzhen Jinghongxin Technology Co., Ltd (July 30, 2026) 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 shun xiang Title: Boss

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 4 Model: MD- K88Z External Photos Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 4 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 3 of 4 Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 4 of 4

FCC ID LABEL: Label Location: FCC ID: 2BXGC-MD-K88Z Model No.: MD- K88Z

Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 11 RF EXPOSURE REPORT Compiled by: Reviewed by: Approved by: Kai Chen Martin Feng 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. The tested sample(s) and the sample information are provided by the applicant. The authenticity, accuracy, and completeness of the provided information are the sole responsibility of the applicant. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The result decision rules of our laboratory are based solely on the direct comparison between the actual measured values of test results and the standard limits, without considering the measurement uncertainty.“” indicates the testing items were fulfilled by subcontracted lab. “” indicates the items are not in CNAS accreditation scope. Test item description: Door Access Control Keypad FCC ID: 2BXGC-MD-K88Z Trademark(s): hongjin Model/Type reference: MD- K88Z, MD88, MD89, MD99, S31D, S31, MD-K8, MD-K8S Applicant’s name: Shenzhen Jinghongxin Technology Co., Ltd Address: Room 201, Building 59, Langkou Industrial Park, Langkou Community, Da lang Street, Longhua District, Shenzhen, China Manufacturer: Shenzhen Jinghongxin Technology Co., Ltd Address: Room 201, Building 59, Langkou Industrial Park, Langkou Community, Da lang Street, Longhua District, Shenzhen, China 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: Jul. 13, 2 026 Sample tested Date: Jul. 13, 2026 to Jul. 25, 2026 Issue Date: Jul. 25, 2026 Report No.: CTB26071304401RF02 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.: CTB26071304401RF02 EMF Report Te l : 4008-707-283 Web: http://www.ctb-lab.net Page2 of 11 Table of Contents Page 1 . GENERAL INFORMATION 3 1.1 . Independent Operation Mode 3 1.2 . Test Supporting System 3 2 .LIST OF T EST AND M EASUREMENT I NSTRUMENTS 4 2.1 . For conducted emission at the mains terminals test 4 3. METHOD OF MEASUREMENT 5 3. 1.Applicable Standard 5 4. TEST RESULT 6 4.1. Conducted Emission at the Mains Terminals Test 6 4.2. Equipment Approval Considerations: 7 4.3. E and H field Strength 7 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26071304401RF02 EMF Report Te l : 4008-707-283 Web: http://www.ctb-lab.net Page3 of 11 1. GENERAL INFORMATION 1.1. Independent Operation Mode The basic operation mode is: 1.1.1. wireless charger power: 25W 1.2. Test Supporting System Adapter Description: Adapter Model No.: HP18A-0902000-AU Power Input: AC100-240V~ 1.0A 50/60Hz Output: 9V2.0A DC Line: Unshielded, Detachable 1.2m Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26071304401RF02 EMF Report Te l : 4008-707-283 Web: http://www.ctb-lab.net Page4 of 11 2.LIST OF T EST AND MEASUREMENT I NSTRUMENTS 2.1. 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 2025/10/20 2026/10/19 Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26071304401RF02 EMF Report Te l : 4008-707-283 Web: http://www.ctb-lab.net Page5 of 11 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. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26071304401RF02 EMF Report Te l : 4008-707-283 Web: http://www.ctb-lab.net Page6 of 11 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.: CTB26071304401RF02 EMF Report Te l : 4008-707-283 Web: http://www.ctb-lab.net Page7 of 11 4.2. Equipment Approval Considerations: The EUT does comply with item 5(b) of KDB 680106 V04 1) Power transfer frequency is less than 1MHz Ye s , the device operate in the frequency range from 110kHz to 205kHz 2) The output power from each transmitting element (e.g., coil) is less than or equal to 25 watts. Yes, the maximum output power of the primary coil is 25000mW. 3) A client device providing the maximum permitted load is placed in physical contact with the transmitter (i.e., the surfaces of the transmitter and client device enclosures need to be in physical contact). Ye s , the surfaces of the transmitter and client device enclosures are in physical contact 4) Only § 2.1091-Mobile exposure conditions apply (i.e., this provision does not cover § 2.1093-Portable exposure conditions).. No, the EUT is portable condi…

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Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 19 TEST REPORT Compiled by: Reviewed by: Approved by: Kai Chen Martin Feng 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. The tested sample(s) and the sample information are provided by the applicant. The authenticity, accuracy, and completeness of the provided information are the sole responsibility of the applicant. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The result decision rules of our laboratory are based solely on the direct comparison between the actual measured values of test results and the standard limits, without considering the measurement uncertainty.“” indicates the testing items were fulfilled by subcontracted lab. “” indicates the items are not in CNAS accreditation scope. Test item description: Door Access Control Keypad FCC ID: 2BXGC-MD-K88Z Trademark(s): hongjin Model/Type reference: MD- K88Z, MD88, MD89, MD99, S31D, S31, MD-K8, MD-K8S Applicant’s name: Shenzhen Jinghongxin Technology Co., Ltd Address: Room 201, Building 59, Langkou Industrial Park, Langkou Community, Da lang Street, Longhua District, Shenzhen, China Manufacturer: Shenzhen Jinghongxin Technology Co., Ltd Address: Room 201, Building 59, Langkou Industrial Park, Langkou Community, Da lang Street, Longhua District, Shenzhen, China 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: Jul. 13, 2026 Sample tested Date: Jul. 13, 2026 to Jul. 25, 2026 Issue Date: Jul. 25, 2026 Report No.: CTB26071304401RF01 Test Standards FCC Part 15 C Test Results PASS Remark: This is125kHz test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB26071304401RF01 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 19 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 .............................................................................................. 10 5.1. Block Diagram of Test Setup ..................................................................................................... 10 5.2. Test Standard .............................................................................................................................. 10 5.3. Conducted Emission Limit ......................................................................................................... 10 5.4. EUT Configuration on Test ........................................................................................................ 10 5.5. Operating Condition of EUT ....................................................................................................... 10 5.6. Test Procedure ............................................................................................................................ 11 5.7. Test Result ................................................................................................................................... 11 6. RADIATED EMISSION MEASUREMENT ............................................................................. 12 6.1. Block Diagram of Test Setup ..................................................................................................... 12 6.2. Test Standard .............................................................................................................................. 13 6.3. EMI Test Receiver Setup ........................................................................................................... 13 6.4. Test Procedure ............................................................................................................................ 13 6.5. Test Result ................................................................................................................................... 13 7. OCCUPIED BANDWID…

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一:产品实物图(Product physical draing) 二:产品尺寸标示图(Product size labeling diagram) 三:Features Magnetic Coi lantifreezplatecoil Meet the QI internationatandard.be Customized accordingtoorder UItrathincompact highefficiency low heat Length and gad of the outgoing linei scus tomizability 四:产品主要参数(Main productparaneters) 线圈内径尺寸(CoildiametersizeDXL .mm) 52mmX85mm 线圈外径尺寸(coil outsidediameterszieDXL.mm) 60mmX93mm 隔磁片尺寸(Spacer sizeDXL.mm) NO 线材料直径 (Wire material diameter.mm) 0.15*1P(红色线) 线圈高度(Heightof thecoihm) 2mm 电感值 (InductancevalueuH) 1MH 圈数(Number of turns) 9TS/70TS 产品用途Product use) 感应线圈 Shenzhen Shibo Weiye Technology Co., Ltd. Address: 6th Floor, East Block A5, Xiufeng Industrial City, Xiufeng Road, Jihua Street, Longgang District, Shenzhen TEL: 0755-26780155 http://www.sbwy.net FAX: 0755-2678015 email: [email protected]

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 1 Model:MD- K88Z Test Setup Photos of EUT Radiated Emission 9kHz-30MHz 30MHz-1GHz

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 3 Model:MD- K88Z Test Setup Photos of EUT 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