2BTOA-KT01VIDEO WALKIE-TALKIE

Shenzhen Lezhixue Electronics Co., Ltd. Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 [December 16, 2025] U.S. Agent Designation [Shenzhen Lezhixue Electronics 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: 2BTOA-KT01 Name and company of U.S. agent: [GLOCERTS TECHNOLOGY INC] Physical U.S. address of agent: [19784 SUNKISSED RIDGE DR, RIVERSIDE, CA 92507] FRN of U.S. agent: [0036339737] Email address of U.S. agent: [[email protected]] Telephone of U.S.agent: (626) 588-8039 [GLOCERTS TECHNOLOGY INC] acknowledges their obligation to accept service of process on behalf of [Shenzhen Lezhixue Electronics Co., Ltd.]. [Shenzhen Lezhixue Electronics Co., Ltd.] with the FRN [0037750577] accepts its obligation to maintain an agent for service of process in the United States for no less than 1 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. Sincerely, Signature Signature [Ren Lijuan] [Huiying Fan] [General Manager] [Director] [Shenzhen Lezhixue Electronics Co., Ltd.] [GLOCERTS TECHNOLOGY INC]

Shenzhen Lezhixue Electronics Co., Ltd. (December 16, 2025) 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:2BTOA-KT01 [Shenzhen Lezhixue Electronics 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)Ren Lijuan Shenzhen Lezhixue Electronics Co., Ltd. (December 16, 2025) 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:2BTOA-KT01 [Shenzhen Lezhixue Electronics 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)Ren Lijuan

Shenzhen Lezhixue Electronics Co., Ltd. (December 16, 2025) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (VIDEO WALKIE-TALKIE / KT01 / FCC ID: 2BTOA-KT01 ) 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: Ren Lijuan Title: General Manager

Shenzhen Lezhixue Electronics Co., Ltd. (December 16, 2025) 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: Ren Lijuan Title: General Manager

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 4 External Photos Model: KT01 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:

Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 39 TEST REPORT Compiled by: Reviewed by: Approved by: Zhang Mao cheng Martin Feng Rita Xiao / 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. Test item description: VIDEO WALKIE-TALKIE FCC ID: 2BTOA-KT01 Trademark(s): N/A Model/Type reference: KT01 Applicant’s name: Shenzhen Lezhixue Electronics Co., Ltd. Address: 13th Floor, Building A1, Dawangshan Third Industrial Zone, Dawangshan Community, Shajing Street, Bao 'an District, Shenzhen City Manufacturer: Shenzhen Xing Weilai Technology Co., Ltd Address: Room 1002, Comprehen-sive Building C6, Hengfeng indus-trial City, No. 739 Zhou ShiRoad, Hezhou Community, HangchengSubdistrict, Bao'an District, Shen-zhen, Guangdong, 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, She nzhen, Guangdong, China Sample Received Date: Nov. 27, 2025 Sample tested Date: Nov. 27, 2025 to Dec. 09, 2025 Issue Date: Dec. 09, 2025 Report No.: CTB25112708201RH02 Test Standards FCC 47 CFR Part2(2.1093), FCC 47 CFR Part1( 1.1310) FCC 47 CFR Part1( 1.1307), ANSI/IEEE C95.1-2019 IEEE 1528-2013 & Published RF Exposure KDB Procedures Test Results PASS Remark: This is SAR test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB25112708201RH02 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 39 Contents Page 1 COVER PAGE ......................................................................................................................................... 1 CONTENTS ....................................................................................................................................................................... 2 1. VERSION .................................................................................................................................................................. 4 2. PRODUCT INFORMATION AND TEST SETUP............................................................................................... 5 2.1 PRODUCT INFORMATION ................................................................................................................................... 5 3 EQUIPMENT USED DURING TEST ................................................................................................................... 6 3.1 EQUIPMENT LIST ............................................................................................................................................... 6 3.2 TEST EQUIPMENT CALIBRATION ....................................................................................................................... 7 4 SAR INTRODUCTION ........................................................................................................................................... 8 4.1 INTRODUCTION .................................................................................................................................................. 8 4.2 SAR DEFINITION ............................................................................................................................................... 8 5 SAR MEASUREMENT SETUP ............................................................................................................................. 9 5.1 SAR MEASUREMENT SETUP ...................................................................................................................... 9 5.2 DASY5 E-FIELD PROBE SYSTEM .................................................................................................................... 10 5.3 PROBE SPECIFICATION ..................................................................................................................................... 10 5.4 ISOTROPIC E-FIELD PROBE .............................................................................................................................. 10 5.5 PHANTOMS ...................................................................................................................................................... 11 5.6 DEVICE HOLDER .............................................................................................................................................. 11 6 SAR TEST PROCEDURE .................................................................................................................................... 12 6.1 SCANNING PROCEDURE ................................................................................................................................... 12 6.2 EXTRAPOLATION ............................................................................................................................................. 15 6.3 TEST POSITION – BODY CONFIGURATIONS ...................................................................................................... 15 7 EXPOSURE LIMIT ............................................................................................................................................... 16 7.1 UNCONTROLLED ENVIRONMENT ..................................................................................................................... 16 7.2 CONTROLLED ENVIRONMENT .......................................................................................................................... 16 8 SYSTEM…

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深圳旭航通讯科技有限公司 ShenzhenXuhangCommunication 规格承认书 客户 CUSTOMER 客户料号 CUSTOMERNO. 供方品名 PARTNAME WIFI天线 规格名称 SUPPLIERNO. 客户确认 CUSTOMERAPPROVEDBY 检验 APPROVAL 审核 CHIEF 批准 SUPERVISOR 设计 DESIGN 审核 CHECK 批准 APPROVAL LuoRobertSHANG Date:June18,2025 DIRECTORY NO.ContentsNumber ofPage PageCode 1SpecCover11 2DIRECTORY12 3TestReports13 4MatchingCircuits14 5DRAWING15 6TestData36-9 7 Antennaassemblyposition 110 电性测试报告 TESTREPORTS 频率 Frequency WIFI(2400~2500MHz) 阻抗 Impedance 500hmNominal 驻波比 V.S.W.R ＜2.0 回波损耗 ReturnLoss -10dBMax 辐射 Radiation Omni-directional 增益 Gain(Peak) 2.62dBi 极化方式 Polarization Linear,Vertical 功率 AdmittedPower 1W 连接器 Connector PhysicalProperties 天线材质 AntennaMaterial FPC 线材类型 CableType O.D.1.13mm 工作温度 OperatingTemp. -10-+60°C 存储温度 StorageTemp. -10-+70°C 线材颜色 CableColor Black 匹配电路 MatchingCircuits 匹配电路 Theoriginalmatchingcircuithasnotbeenmodified DRAWING 测试数据 TestData 无源数据 3D方向图 无源驻波 Standingwaveloss 天线安装位置 Antennaassemblyposition

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. 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. Test item description: VIDEO WALKIE-TALKIE FCC ID: 2BTOA-KT01 Trademark(s): N/A Model/Type reference: KT01 Applicant’s name: Shenzhen Lezhixue Electronics Co., Ltd. Address: 13th Floor, Building A1, Dawangshan Third Industrial Zone, Dawangshan Community, Shajing Street, Bao 'an District, Shenzhen City Manufacturer: Shenzhen Xing Weilai Technology Co., Ltd Address: Room 1002, Comprehen-sive Building C6, Hengfeng indus-trial City, No. 739 Zhou ShiRoad, Hezhou Community, HangchengSubdistrict, Bao'an District, Shen-zhen, Guangdong, 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: Nov. 27, 2025 Sample tested Date: Nov. 27, 2025 to Dec. 09, 2025 Issue Date: Dec. 09 , 2025 Report No.: CTB25112708201RF01 Test Standards FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2020 Test Results PASS Remark: This is WIFI-2.4GHz band radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB25112708201RF01 Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 52 TABLE OF CONTENT Test Report Declaration Page 1. VERSION ........................................................................................................................................ 3 2. TEST SUMMARY ........................................................................................................................... 4 3. MEASUREMENT UNCERTAINTY ................................................................................................. 5 4. PRODUCT INFORMATION AND TEST SETUP ............................................................................ 6 4.1 Product Information .......................................................................................................................... 6 4.2 Test Setup Configuration .................................................................................................................. 6 4.3 Support Equipment........................................................................................................................... 6 4.4 Channel List ..................................................................................................................................... 6 4.5 Test Mode ........................................................................................................................................ 7 4.6 Test Environment ............................................................................................................................. 7 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................................................... 8 5.1 Test Facility ...................................................................................................................................... 8 5.2 Test Instrument Used ....................................................................................................................... 8 6. AC POWER LINE CONDUCTED EMISSION ................................................................................ 11 6.1 Block Diagram Of Test Setup ......................................................................................................... 11 6.2 Limit ................................................................................................................................................ 11 6.3 Test procedure ............................................................................................................................... 11 6.4 Test Result ..................................................................................................................................... 13 7. RADIATED SPURIOUS EMISSION ............................................................................................. 15 7.1 Block Diagram Of Test Setup ......................................................................................................... 15 7.2 Limit ................................................................................................................................................ 15 7.3 Test procedure ............................................................................................................................... 16 7.4 Test Result ..................................................................................................................................... 17 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS ............................................... 34 8.1 Block Diagram Of Test Setup ......................................................................................................... 34 8.2 Limit ................................................................................................................................................ 34 8.3 Test procedure ............................................................................................................................... 34 8. 4 Test Result ..................................................................................................................................... 35 9. COUDUCTED OUTPUT POWER ....................................…

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Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 2 Model: KT01 Radiated Emission Below 1G Above 1G Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 2 Conducted emissions

Shenzhen CTB Testing Technology Co., Ltd. Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 1 Model: KT01 Body-worn(Front side) Body-worn (Back side) Front of Face 5mm separation 5mm separation 25mm separation