2BV3P-XHJVISTALKSWireless video intercom

P o r t u g u ê s ( 4 4 - 5 0 P o r t u g u ê s ( 4 5 - 5 0 P o r t u g u ê s ( 4 6 - 5 0 P o r t u g u ê s ( 4 7 - 5 0 P o r t u g u ê s ( 4 8 - 5 0 P o r t u g u ê s ( 4 9 - 5 0 P o r t u g u ê s ( 5 0 - 5 0 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. Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.NOTE: 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 against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following 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.This device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or transmitter.Radiation Exposure StatementThe device has been evaluated to meet general RF exposure requirement in portable exposure condition without restriction.

OFF/ON :

English(1-8) P o r t u g u ê s ( 4 4 - 5 0 English(1-8) English(2-8) English(5-8) English(8-8) OFF/ON

Report No.: TZ0032260414PH03 Page 1 of 4 Internal Photographs of EUT Internal Photo 1 Internal Photo 2 Report No.: TZ0032260414PH03 Page 2 of 4 Internal Photo 3 Internal Photo 4 Report No.: TZ0032260414PH03 Page 3 of 4 Internal Photo 5 Internal Photo 6 2.4G antenna Report No.: TZ0032260414PH03 Page 4 of 4 Internal Photo 7 Internal Photo 8

Report No.: TZ0032260414PH01 Page 1 of 2 Test Setup Photos of the EUT Conducted Emission Radiated Emission Below 1GHz Report No.: TZ0032260414PH01 Page 2 of 2 Radiated Emission Above 1GHz RF Conducted Test

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

Report No.: TZ0032260414FRF03 Page 1 of 35 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing 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. The test report apply only to the specific sample(s) tested under stated test conditions. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. TEST REPORT Report Number : TZ0032260414FRF03 Product Name : Wireless video intercom Model/Type reference : XHJ-Vistalk s, XHJ-Vistalk A, XHJ-Vistalk B, XHJ-Vistalk C, XHJ-Vistalk D, XHJ-Vistalk E, XHJ-Vistalk F, XHJ-Vistalk G, XHJ-Vistalk H, XHJ-Vistalk I, XHJ- Vistalk J, XHJ-Vistalk K, XHJ-Vistalk L, XHJ-Vistalk M, XHJ-Vistalk N, XHJ- Vistalk O, XHJ-Vistalk P, XHJ-Vistalk Q, XHJ-Vistalk R, XHJ-Vistalk T, XHJ- Vistalk U, XHJ-Vistalk V, XHJ-Vistalk W, XHJ-Vistalk X, XHJ-Vistalk Y, XHJ- Vistalk Z FCC ID : 2BV3P-XHJVISTALKS Prepared for : Shenzhen Technology Co,. cat teeth Room 102, Baohengyuan Building No. 12, Huaqing Road, Longhua District, Shenzhen, Guangdong, China Prepared By : Shenzhen Tongzhou Testing Co.,Ltd. 1st Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Standards : FCC CFR Title 47 Part 15C, ANSI C63.10-2020 + Cor.1-2023 Date of Test : 2026-05-20 ~ 2026-06-02 Date of Issue : 2026-06-03 Prepared by : Lena Wen Reviewed by : Allen Lai Approved by : Max Zhang (Authorized Officer) Report No.: TZ0032260414FRF03 Page 2 of 35 ** Report Revise Record ** Report Version Revise Time Issued Date Valid Version Notes V1.0 / 2026-06-03 Valid Initial release Report No.: TZ0032260414FRF03 Page 3 of 35 TABLE OF CONTENTS 1. G E N E R A L I N F O R M A T I O N ....................................................... 4 1.1. Client Information ................................................................................................................... 4 1.2. Description of Device (EUT) ................................................................................................... 4 1.3. Wireless Function Tested in this Report .............................................................................. 4 1.4. EUT configuration ................................................................................................................... 5 1.5. Description of Test Facility .................................................................................................... 5 1.6. Statement of the Measurement Uncertainty ......................................................................... 5 1.7. Measurement Uncertainty ...................................................................................................... 6 1.8. Description of Test Modes ..................................................................................................... 6 1.9. Frequency of Channels .......................................................................................................... 7 2. T E S T M E T H O D O L O G Y ............................................................ 8 2.1. EUT Configuration .................................................................................................................. 8 2.2. EUT Exercise ........................................................................................................................... 8 2.3. Test Sample ............................................................................................................................. 8 3. S Y S T E M T E S T C O N F I G U R A T I O N .............................................. 9 3.1. Justification ............................................................................................................................. 9 3.2. EUT Exercise Software ........................................................................................................... 9 3.3. Special Accessories ............................................................................................................... 9 3.4. Block Diagram/Schematics .................................................................................................... 9 3.5. Equipment Modifications ....................................................................................................... 9 3.6. Test Setup ................................................................................................................................ 9 4. S U M M A R Y O F T E S T R E S U L T S ............................................... 10 5. T E S T R E S U L T .................................................................... 11 5.1. On Time and Duty Cycle ....................................................................................................... 11 5.2. Maximum Conducted Output Power Measurement ........................................................... 12 5.3. Power Spectral Density Measurement ................................................................................ 13 5.4. 6 dB Spectrum Bandwidth and Occupied Channel Bandwidth Measurement ............... 14 5.5. Radiated Emissions Measurement ...................................................................................... 15 5.6. Conducted Spurious Emissions and Band Edges Test .................................................... 24 5.7. Power Line Conducted Emissions ...................................................................................... 25 5.8. Band-Edge Measurements for Radiated Emissions .......................................................... 28 5.9. Antenna Requirements ......................................................................................................... 33 6. L I S T O F M E A S U R I N G E Q …

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Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 1 of 44 Appendix Test Data for WLAN(2. 4G) (Conducted Measurement) Product Name: Wireless video intercom Trade Mark: XHj Test Model: XHJ-Vistalk s FCC ID: 2BV3P-XHJVISTALKS Environmental Conditions Temperature: 23.5°C Relative Humidity: 58% ATM Pressure: 100.0 kPa Test Engineer: Allen Lai Supervised by: Max Zhang NOTE N/A Appendix A: DTS Bandwidth Test Result Test Mode Antenna Frequency [MHz] DTS BW [MHz] FL [MHz] FH [MHz] Limit [MHz] Verdict 11B Ant1 2412 12.120 2406.040 2418.160 0.5 PASS 11B Ant1 2437 11.160 2431.960 2443.120 0.5 PASS 11B Ant1 2462 11.160 2457.000 2468.160 0.5 PASS 11G Ant1 2412 16.400 2403.880 2420.280 0.5 PASS 11G Ant1 2437 16.400 2428.880 2445.280 0.5 PASS 11G Ant1 2462 16.360 2453.920 2470.280 0.5 PASS 11N20SISO Ant1 2412 17.640 2403.280 2420.920 0.5 PASS 11N20SISO Ant1 2437 17.560 2428.280 2445.840 0.5 PASS 11N20SISO Ant1 2462 17.680 2453.280 2470.960 0.5 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 2 of 44 Test Graphs 11B-Ant1-2412-PASS 11B-Ant1-2437-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 3 of 44 11B-Ant1-2462-PASS 11G-Ant1-2412-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 4 of 44 11G-Ant1-2437-PASS 11G-Ant1-2462-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 5 of 44 11N20SISO-Ant1-2412-PASS 11N20SISO-Ant1-2437-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 6 of 44 11N20SISO-Ant1-2462-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 7 of 44 Appendix B: Occupied Channel Bandwidth Test Result Test Mode Antenna Channel Frequency [MHz] OCB [MHz] FL [MHz] FH [MHz] Limit [MHz] Verdict 11B Ant1 2412 16.080 2404.0796 2420.1596 --- --- 11B Ant1 2437 15.967 2429.0622 2445.0292 --- --- 11B Ant1 2462 16.174 2454.0776 2470.2516 --- --- 11G Ant1 2412 17.396 2403.4746 2420.8706 --- --- 11G Ant1 2437 17.184 2428.5110 2445.6950 --- --- 11G Ant1 2462 17.343 2453.4719 2470.8149 --- --- 11N20SISO Ant1 2412 18.110 2403.0472 2421.1572 --- --- 11N20SISO Ant1 2437 17.994 2428.0504 2446.0444 --- --- 11N20SISO Ant1 2462 18.117 2453.0890 2471.2060 --- --- Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 8 of 44 Test Graphs 11B-Ant1-2412 11B-Ant1-2437 Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 9 of 44 11B-Ant1-2462 11G-Ant1-2412 Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 10 of 44 11G-Ant1-2437 11G-Ant1-2462 Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 11 of 44 11N20SISO-Ant1-2412 11N20SISO-Ant1-2437 Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 12 of 44 11N20SISO-Ant1-2462 Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 13 of 44 Appendix C: Maximum Average conducted output power Test Result Test Mode Antenna Frequency [MHz] Conducted Power [dBm] Conducted Limit [dBm] Verdict 11B Ant1 2412 7.11 ≤30.00 PASS 11B Ant1 2437 6.58 ≤30.00 PASS 11B Ant1 2462 5.88 ≤30.00 PASS 11G Ant1 2412 6.10 ≤30.00 PASS 11G Ant1 2437 7.12 ≤30.00 PASS 11G Ant1 2462 6.67 ≤30.00 PASS 11N20SISO Ant1 2412 6.68 ≤30.00 PASS 11N20SISO Ant1 2437 6.56 ≤30.00 PASS 11N20SISO Ant1 2462 6.21 ≤30.00 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) + Duty Cycle Factor(dB) Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 14 of 44 Appendix D: Maximum Average power spectral density Test Result Test Mode Antenna Frequency [MHz] Result [dBm/3kHz] Limit [dBm/3kHz] Verdict 11B Ant1 2412 -31.23 ≤8.00 PASS 11B Ant1 2437 -20.82 ≤8.00 PASS 11B Ant1 2462 -26.03 ≤8.00 PASS 11G Ant1 2412 -23.97 ≤8.00 PASS 11G Ant1 2437 -25.52 ≤8.00 PASS 11G Ant1 2462 -23.53 ≤8.00 PASS 11N20SISO Ant1 2412 -23.83 ≤8.00 PASS 11N20SISO Ant1 2437 -24.39 ≤8.00 PASS 11N20SISO Ant1 2462 -22.99 ≤8.00 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) + Duty Cycle Factor(dB) Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 15 of 44 Test Graphs 11B-Ant1-2412-PASS 11B-Ant1-2437-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 16 of 44 11B-Ant1-2462-PASS 11G-Ant1-2412-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 17 of 44 11G-Ant1-2437-PASS 11G-Ant1-2462-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 18 of 44 11N20SISO-Ant1-2412-PASS 11N20SISO-Ant1-2437-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 19 of 44 11N20SISO-Ant1-2462-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 20 of 44 Appendix E: Band edge measurements Test Result Test Mode Antenna Ch. Name Frequency.[M Hz] Ref. Level [dBm] Result [dBm] Limit [dBm] Verdict 11B Ant1 Low 2412 -1.38 -44.74 ≤-31.38 PASS 11B Ant1 High 2462 -3.54 -47.38 ≤-33.54 PASS 11G Ant1 Low 2412 -6.83 -42.64 ≤-36.83 PASS 11G Ant1 High 2462 -4.75 -48.01 ≤-34.75 PASS 11N20SIS O Ant1 Low 2412 -5.54 -43.53 ≤-35.54 PASS 11N20SIS O Ant1 High 2462 -7.83 -48.51 ≤-37.83 PASS Note: offset(dB) = cable loss(dB) + attenuator factor(dB) Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 21 of 44 Test Graphs 11B-Ant1-2412-PASS 11B-Ant1-2462-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 22 of 44 11G-Ant1-2412-PASS 11G-Ant1-2462-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 23 of 44 11N20SISO-Ant1-2412-PASS 11N20SISO-Ant1-2462-PASS Appendix Test Data of the Report No.: TZ0032260414FRF03 Page 24 of 44 Appendix F: Conducted Spurious Emission Test Result Test Mode Antenna Frequency [MHz] Freq. Range [Mhz] Ref. Level [dBm] Result [dBm] Limit [dBm] Verdict 11B Ant1 2412 0~Reference -2.29 -2.29 --- PASS 11B Ant1 2412 30~1000 -2.29 -62.7 ≤-32.29 PASS 11B Ant1 2412 1000~26500 -2.29 -37.3 ≤-32.29 PASS 11B Ant1 2437 0~Reference -4.63 -4.63 --- PASS 11B Ant1 2437 30~1000 -4.63 -62.94 ≤-34.63 PASS 11B Ant1 2437 1000~26500 -4.63 -37.59 ≤-34.63 PASS 11B Ant1 2462 0~Reference -3.44 -3.44 --- PASS 1…

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FCC ID: 2BV3P-XHJVISTALKS Page 1 of 2 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd RADIO FREQUENCY EXPOSURE Limit According to section 4.3.1 of KDB 447498 D01 General RF Exposure Guidance v06, SAR evaluation is required if the separation distance between the user and/or bystander and the antenna and/or radiating element of the device is less than or equal to 20 cm, except when the device operates at or below the applicable output power level (adjusted for tune-up tolerance) for the specified separation distance defined in Appendix A. Appendix A SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm MHz 5 10 15 20 25 mm 150 39 77 116 155 194 SAR Test Exclusion Threshold (mW) 300 27 55 82 110 137 450 22 45 67 89 112 835 16 33 49 66 82 900 16 32 47 63 79 1500 12 24 37 49 61 1900 11 22 33 44 54 2450 10 19 29 38 48 3600 8 16 24 32 40 5200 7 13 20 26 33 5400 6 13 19 26 32 5800 6 12 19 25 31 MHz 30 35 40 45 50 mm 150 232 271 310 349 387 SAR Test Exclusion Threshold (mW) 300 164 192 219 246 274 450 134 157 179 201 224 835 98 115 131 148 164 900 95 111 126 142 158 1500 73 86 98 110 122 1900 65 76 87 98 109 2450 57 67 77 86 96 3600 47 55 63 71 79 5200 39 46 53 59 66 5400 39 45 52 58 65 5800 37 44 50 56 62 FCC ID: 2BV3P-XHJVISTALKS Page 2 of 2 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Results RF Exposure at Separation distance (cm): 0.5 Mode Antenna Frequency [MHz] Conducted Power [dBm] Manufacturing tolerance Conducted Power including Tune Up Calculation Value for 1g SAR Exemption Limit for 1g SAR Target Power [dBm] Tolerance ±[dB] [dBm] [mW] 11B Ant1 2412 7.11 6.5 1 7.5 5.62 1.75 3 11B Ant1 2437 6.58 6 1 7 5.01 1.56 3 11B Ant1 2462 5.88 5.5 1 6.5 4.47 1.40 3 11G Ant1 2412 6.1 5.5 1 6.5 4.47 1.39 3 11G Ant1 2437 7.12 6.5 1 7.5 5.62 1.76 3 11G Ant1 2462 6.67 6 1 7 5.01 1.57 3 11N20SISO Ant1 2412 6.68 6 1 7 5.01 1.56 3 11N20SISO Ant1 2437 6.56 6 1 7 5.01 1.56 3 11N20SISO Ant1 2462 6.21 5.5 1 6.5 4.47 1.40 3 Note: 1. Calculation Value = [(max. power of channel, mW) / (min. test separation distance, mm)] ·[√f(GHz)]. Conclusion: The SAR evaluation is not required.

Shenzhen Technology Co,. cat teeth Covered Equipment Certification Attestation Letter 6/15/2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2BV3P-XHJVISTALKS Shenzhen Technology Co,. cat teeth (“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. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Shenzhen Technology Co,. cat teeth (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Shenzhen Technology Co,. cat teeth (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Signed: Printed name: Lin Longtao Title: Manager Company Name: Shenzhen Technology Co,. cat teeth Date: 6/15/2026

The size of the label is 15mm*10mm with White forecolor. The size of the logo is 5mm*5mm. FCC ID: 2BV3P-XHJVISTALKS

Report No.: TZ0032260414PH02 Page 1 of 4 External Photographs of EUT External Photo 1 External Photo 2 Report No.: TZ0032260414PH02 Page 2 of 4 External Photo 3 External Photo 4 Report No.: TZ0032260414PH02 Page 3 of 4 External Photo 5 External Photo 6 Report No.: TZ0032260414PH02 Page 4 of 4 External Photo 7

Shenzhen Technology Co,. cat teeth Room 102, Baohengyuan Building No. 12, Huaqing Road, Longhua District, Shenzhen, Guangdong, China Date: 2026/6/15 Dear Sir/Madam, We, Shenzhen Technology Co,. cat teeth, Hereby declares the following statement, PCB board, circuit, structure and internal of these model(s) are the same, Only model name is different for these model: FCC ID: 2BV3P-XHJVISTALKS Product name: Wireless video intercom Model no.: XHJ-Vistalk s, XHJ-Vistalk A, XHJ-Vistalk B, XHJ-Vistalk C, XHJVistalk D, XHJ-Vistalk E, XHJ-Vistalk F, XHJ-Vistalk G, XHJ-Vistalk H, XHJ-Vistalk I, XHJ-Vistalk J, XHJ-Vistalk K, XHJ- Vistalk L, XHJVistalk M, XHJ-Vistalk N, XHJ-Vistalk O, XHJ-Vistalk P, XHJ-Vistalk Q, XHJ-Vistalk R, XHJ-Vistalk T, XHJ-Vistalk U, XHJ-Vistalk V, XHJVistalk W, XHJ-Vistalk X, XHJ-Vistalk Y, XHJ- Vistalk Z Sincerely, Name/Title： Lin Longtao / Manager Company: Shenzhen Technology Co,. cat teeth Address: Room 102, Baohengyuan Building No. 12, Huaqing Road, Longhua District, Shenzhen, Guangdong, China Phone: 18038156571 Fax: N/A E-Mail: [email protected]

DATE: 6/15/2026 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2BV3P-XHJVISTALKS Product Name: Wireless video intercom Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commission’s rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality – for example ...) • Schematics • Block diagram • Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. <Signature> Name: Lin Longtao Title: Manager Company: Shenzhen Technology Co,. cat teeth

Date: 6/15/2026 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Compliance Testing, LLC 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). Sincerely, <Signature> Name: Lin Longtao Title: Manager Company: Shenzhen Technology Co,. cat teeth

Shenzhen Technology Co,. cat teeth DATE: 6/15/2026 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen Tongzhou Testing Co.,Ltd. (1st Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China) to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with Shenzhen Technology Co,. cat teeth (Room 102, Baohengyuan Building No. 12, Huaqing Road, Longhua District, Shenzhen, Guangdong, China) <Signature> Name: Lin Longtao Title: Manager Applicant Company: Shenzhen Technology Co,. cat teeth

Shenzhen Technology Co,. cat teeth Room 102, Baohengyuan Building No. 12, Huaqing Road, Longhua District, Shenzhen, Guangdong, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2026-6-8 U.S. Agent Designation Shenzhen Technology Co,. cat teeth 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: 2BV3P-XHJVISTALKS): 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 GLOCERTS TECHNOLOGY INC acknowledges their obligation to accept service of process on behalf of Shenzhen Technology Co,. cat teeth. Shenzhen Technology Co,. cat teeth with the FRN 0038409405 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 Lin Longtao Huiying Fan Manager Te l : 18038156571 Email: [email protected] Director Tel: (626) 588-8039 Email: [email protected] Shenzhen Technology Co,. cat teeth GLOCERTS TECHNOLOGY INC