2BLZU-M081ANTI-RECORDING JAMMER

Local Representative Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(7), of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2BLZU-M081 M081 We hereby acknowledge as follows: i. both signees confirm that the point of contact accepts responsibility to act as a US- American Representative on behalf of the applicant ii. the point of contact provides the physical U.S. address and email as listed below iii. both parties maintain the requirements of this agreement 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. iv. 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. US-American Point of Contact Applicant/Approval Holder Signature Date: 2026-8-4 Signature Date: 2026-8-4 Company Name: GLOCERTS TECHNOLOGY INC Zanchengrongke(Shenzhen)Technology Co., Ltd. FRN: 0036339737 0038222113 Contact Name: Huiying Fan Shu rong Li Address: 19784 SUNKISSED RIDGE DR, RIVERSIDE, CA 92507 Room B 208, No. 6, Zaohekeng Industrial Park, Jianzhu Road, Nanwan Street, Longgang District, Shenzhen, China Phone: (626) 588-8039 +8613418815602 Email: [email protected] [email protected]

Page 1 of 3 FCC ID: 2BLZU-M081 External photos Page 2 of 3 FCC ID: 2BLZU-M081 Page 3 of 3 FCC ID: 2BLZU-M081

Label FCC ID: 2BLZU-M081

Page 1 of 2 FCC ID: 2BLZU-M081 Internal Photos Page 2 of 2 FCC ID: 2BLZU-M081 PCB ANT

Page 1 of 7 Report No.: AiTDG-260528005W2 Note: This device has been tested and found to comply with the standard(s) listed, this 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. This report shall not be reproduced except in full, without the written approval of Dongguan Yaxu (AiT) Technology Limited. If there is a need to alter or revise this document, the right belongs to Dongguan Yaxu (AiT) Technology Limited, and it should give a prior written notice of the revision document. This test report must not be used by the client to claim product endorsement. Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. RF Exposure evaluation Product Name : ANTI-RECORDING JAMMER Brand Name : N/A Model : M081 Series Model : N/A FCC ID : 2BLZU-M081 Applicant : Zanchengrongke(Shenzhen)Technology Co., Ltd. Address : Room B 208, No. 6, Zaohekeng Industrial Park, Jianzhu Road, Nanwan Street, Longgang District, Shenzhen, China Manufacturer : Zanchengrongke(Shenzhen)Technology Co., Ltd. Address : Room B 208, No. 6, Zaohekeng Industrial Park, Jianzhu Road, Nanwan Street, Longgang District, Shenzhen, China Standard(s) : 47CFR §1.1310, 47CFR §2.1093 KDB447498 D01 General RF Exposure Guidance v06 Date of Receipt : May. 28, 2026 Date of Test : May. 28, 2026~ Jun. 08, 2026 Issued Date : Jun. 08, 2026 Issued By: Dongguan Yaxu (AiT) Technology Limited No. 22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China Tel.: +86-769-8202 0499 Fax.: +86-769-8202 0495 Reviewed by: Approved by: Emiya Lin Simba Huang Page 2 of 7 Report No.: AiTDG-260528005W2 Report Revise Record Report Version Issued Date Notes M0 Jun. 08, 2026 Initial Release Page 3 of 7 Report No.: AiTDG-260528005W2 Contents 1 GENERAL INFORMATION .......................................................................................................................................... 4 1.1 ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 4 1.2 GENERAL DESCRIPTION OF EUT ...................................................................................................................................... 4 1.3 TEST FACILITY .............................................................................................................................................................. 5 1.4 MEASUREMENT UNCERTAINTY ........................................................................................................................................ 5 2 METHOD OF MEASUREMENT ................................................................................................................................... 6 2.1 APPLICABLE STANDARD.................................................................................................................................................. 6 2.2 EVALUATION METHOD AND LIMIT .................................................................................................................................... 6 2.3 MANUFACTURING TOLERANCE ........................................................................................................................................ 7 2.4 EVALUATION RESULT ..................................................................................................................................................... 7 2.5 CONCLUSION ............................................................................................................................................................... 7 Page 4 of 7 Report No.: AiTDG-260528005W2 1 GENERAL INFORMATION 1.1 Environmental conditions During the measurement the environmental conditions were within the listed ranges: Normal Temperature: 25°C Relative Humidity: 55 % Air Pressure: 101 kPa 1.2 General Description of EUT Product Name: ANTI-RECORDING JAMMER Model/Type reference: M081 Serial Model: N/A Power Supply: Remote control: DC 12V 27A Alkaline battery Hardware Version: N/A Software Version: N/A Sample(s) Status: AiTDG-260528005-1(Normal sample) AiTDG-260528005-2(Engineer sample) SRD : Operation frequency: 433.92MHz Modulation: ASK Channel number: 1 Antenna type: Built- in PCB antenna Antenna gain: -1.22dBi Remark: The above DUT's information was declared by manufacturer. For more detailed features description, please refer to the manufacturer’s specifications or the User's Manual. Page 5 of 7 Report No.: AiTDG-260528005W2 1.3 Test Facility Test Laboratory: Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China The test facility is recognized, certified or accredited by the following organizations: CNAS-Registration No: L6177 Dongguan Yaxu (AiT) technology Limited is accredited to ISO/IEC 17025:2017 general Requirements for the competence of testing and calibration laboratories (CNAS-CL01 Accreditation Criteria for the competence of testing and calibration laboratories) on April 18, 2022 FCC-Registration No.: 362653 Designation Number: CN1457 Dongguan Yaxu (AiT) Technology Limited has been registered and fully described in a report filed with the (FCC) Federal Communications Commission. The acceptance letter from the FCC is maintained in our files. IC-Registration No.: 6819A CAB identifier: CN0122 The 3m Semi-anechoic chamber of Dongguan Yaxu (AiT) Technology Limited has been registered by Certification and Engineering Bureau of Industry Canada for radio equipment testing with Registration No.: 6819A A2LA-Lab Cert. No.: 6317.01 Dongguan Yaxu (AiT) Technology Limited has been accredited by A2LA for technical competence in the field of electrical testing, and proved to be in compliance with ISO/IEC 17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories and a…

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1 / 7 目录/Catalogue 序号 No. 项目 Item 页码 Page No. 1 图纸或实物图片 Drawing or Product Image 2 2 技术参数 Technical Parameter 3 3 射频性能测试报告 RF Performance Test Report 4-7 Manufacturer:VOLDAM(CHINA)ELECTRICALS LIMITED Address: No.88, ChuangYuan Road, Anle industrial park,Anle community,DongFeng Town,Zhongshan city, GuangDong China. P.R. Post code.528425 2 / 7 1、Drawing or Product Image/产品图纸或实物图片 3 / 7 二、Technical Parameter /技术参数 1. Antenna/天线 No/序号Part Name/项目SPEC/规格 1 Frequency Range/ 频率范围 433MHz 2 Impendence/阻抗50 ohm nominal 3 Gain/增益＞-3dBi 4 Polarization/极化LINE 5 VSWR/驻波比 ≤1.5 6 Efficiency/效率 ≥18% 2. Environmental Characteristics/环境特性 No/序号Part Name/项目SPEC/规格 1 Operation Humidity/ 工作湿度 5~95%不冷凝 2 Operating Temperature/ 工作温度 -20~+60°C 3 Store Temperatuer/ 储存温度 -30~+70°C 4 / 7 三、射频性能测量报告/RF Performance Test Report 天线测试设备简介 Antenna Test Equipment Introduction 测试天线输入特性使用Agilent E5071C and Agilent 5062A矢量网络分析仪；辐射特性 利用Satimo三维近场暗室进行测试，并分别使用8960 E5515和Agilent E4438C进行了分析。 暗房的测试坐标如下: Test of antenna input characteristics using Agilent E5071C and Agilent 5062A vector network analyzer; The radiation pattern of the antenna are tested using the Satimo starlab 3D near field Anechoic Chamber, and the instrument is used to agilent8960 E5515 and Agilent E4438C. The test coordinates of the darkroom are as follows: 1.S11参数测量/S11 Parameter-VSWR 使用一根 50Ω 同轴电缆连接到天线，然后该电缆连接到网络分析仪测量S11参数，被测量产品 远离金属至少20厘米。 Measuring Method is a 50Ωcoaxial cable is connected to the antenna. Then this cable is connected to a network analyzer to measure the S11 parameter, Keeping this fixture away from metal at least 20cm. 5 / 7 S11 Parameter 2.天线匹配网络/Antenna Matching Network 6 / 7 2D Pattern Phi =0 Phi =90 Theta =90 7 / 7 3. Gain & Efficiency-ANT

Page 1 of 27 Report No.: AiTDG-260528005W1 Note: This device has been tested and found to comply with the standard(s) listed, this 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. This report shall not be reproduced except in full, without the written approval of Dongguan Yaxu (AiT) Technology Limited. If there is a need to alter or revise this document, the right belongs to Dongguan Yaxu (AiT) Technology Limited, and it should give a prior written notice of the revision document. This test report must not be used by the client to claim product endorsement. Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China. TEST REPORT Product Name : ANTI-RECORDING JAMMER Brand Name : N/A Model : M081 Series Model : N/A FCC ID : 2BLZU-M081 Applicant : Zanchengrongke(Shenzhen)Technology Co., Ltd. Address : Room B 208, No. 6, Zaohekeng Industrial Park, Jianzhu Road, Nanwan Street, Longgang District, Shenzhen, China Manufacturer : Zanchengrongke(Shenzhen)Technology Co., Ltd. Address : Room B 208, No. 6, Zaohekeng Industrial Park, Jianzhu Road, Nanwan Street, Longgang District, Shenzhen, China Standard(s) : FCC CFR Title 47 Part 15 Subpart C Section 15.231 Date of Receipt : May. 28, 2026 Date of Test : May. 28, 2026~ Jun. 08, 2026 Issued Date : Jun. 08, 2026 Issued By: Dongguan Yaxu (AiT) Technology Limited No. 22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China Tel.: +86-769-8202 0499 Fax.: +86-769-8202 0495 Reviewed by: Approved by: Emiya Lin Simba Huang Page 2 of 27 Report No.: AiTDG-260528005W1 Report Revise Record Report Version Issued Date Notes M0 Jun. 08, 2026 Initial Release Page 3 of 27 Report No.: AiTDG-260528005W1 Contents 1 TEST SUMMARY ....................................................................................................................................................... 4 1.1 TEST STANDARDS ......................................................................................................................................................... 4 1.2 TEST SUMMARY ........................................................................................................................................................... 4 1.3 TEST FACILITY .............................................................................................................................................................. 5 1.4 MEASUREMENT UNCERTAINTY ........................................................................................................................................ 5 2 GENGENERAL INFORMATION ................................................................................................................................... 6 2.1 ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 6 2.2 GENERAL DESCRIPTION OF EUT ...................................................................................................................................... 6 2.4 SPECIAL ACCESSORIES ................................................................................................................................................... 7 2.5 EQUIPMENT LIST FOR THE TEST ....................................................................................................................................... 7 3 TEST CONDITIONS AND RESULTS .............................................................................................................................. 9 3.1 CONDUCTED EMISSIONS TEST ......................................................................................................................................... 9 3.2 RADIATED EMISSIONS AND BAND EDGE .......................................................................................................................... 11 3.3 20DB BANDWIDTH ..................................................................................................................................................... 19 3.4 DEACTIVATION TIME ................................................................................................................................................... 20 3.5 ANTENNA REQUIREMENT ............................................................................................................................................. 21 4 TEST SETUP PHOTOGRAPHS OF EUT ....................................................................................................................... 22 5 PHOTOS OF EUT ..................................................................................................................................................... 23 Page 4 of 27 Report No.: AiTDG-260528005W1 1 TEST SUMMARY 1.1 Test Standards 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: 2020: American National Standard for Testing Unlicensed Wireless Devices 1.2 Test Summary FCC Requirements FCC Part 15.207 Conducted Emission N/A FCC Part 15.231(a)(2) Automatically Deactivate PASS FCC Part 15.231(b) Electric Field Strength of Fundamental Emission PASS FCC Part 15.205 &15.209& 15.231(b) Electric Field Strength of Spurious Emission PASS FCC Part 15.231(c) -20dB bandwidth PASS Page 5 of 27 Report No.: AiTDG-260528005W1 1.3 Test Facility Test Laboratory: Dongguan Yaxu (AiT) Technology Limited No.22, Jinqianling 3rd Street, Jitigang, Huangjiang, Dongguan, Guangdong, China The test facility is recognized, certified or accredited by the following organizations: CNAS-Registration No: L6177 Dongguan Yaxu (AiT) technology Limited is accredited to ISO/IEC 17025:2017 general Requirements for the competence of testing and calibration laboratories (CNAS-CL01 Accr…

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Page 1 of 1 FCC ID: 2BLZU-M081 Radiated Emission RF Conducted