2AZI3-WD94Water Leak Detector

FCC ID: 2AZI3-WD94 TB-RF-073-3.1 Appendix III EUT External Photographs Photo 1 Appearance of EUT Photo 2 Appearance of EUT FCC ID: 2AZI3-WD94 TB-RF-073-3.1 Photo 3 Appearance of EUT Photo 4 Appearance of EUT FCC ID: 2AZI3-WD94 TB-RF-073-3.1 Photo 5 Appearance of EUT Photo 6 Appearance of EUT FCC ID: 2AZI3-WD94 TB-RF-073-3.1 Photo 7 Appearance of EUT

FCC ID: 2AZI3-WD94 TB-RF-073-3.1 Appendix IFCC ID Label Appendix II ID Label Location

FCC ID: 2AZI3-WD94 TB-RF-073-3.1 Appendix IV EUT Internal Photographs Photo 8 Internal of EUT Photo 9 Internal of EUT FCC ID: 2AZI3-WD94 TB-RF-073-3.1 Photo 10 Appearance of PCB Photo 11 Appearance of PCB FCC ID: 2AZI3-WD94 TB-RF-073-3.1 Photo 12 Appearance of PCB Antenna

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202604-0523-11 Page: 1 of 8 TB-RF-073-3.1 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Email: [email protected] www.cotecna-toby.com Maximum Permissible Exposure Evaluation FCC ID: 2AZI3-WD94 Report No. : TBR-C-202604-0523-11 Applicant : SHENZHEN KERUI SMART TECHNOLOGY CO., LTD Equipment Under Test (EUT) EUT Name : Water Leak Detector Model No. : WD94 Series Model No. : WD94x2, WD94x3, WD94x4, WD94x5, W13+WD94, W13+WD94x2, W13+WD94x3, W13+WD94x4, W13+WD94x5, W13+WD94x6 Brand Name : N/A Sample ID : HC-C-202604-0523-01-02-1#&HC-C-202604-0523-01-02-2# Receipt Date : 2026-05-19 Test Date : 2026-05-19 to 2026-06-08 Issue Date : 2026-06-09 Standards : FCC Part 2.1091 Test Method : KDB 447498 D01 General RF Exposure Guidance v06 Conclusions : PASS In the configuration tested, the EUT complied with the standards specified above. Tested By : Gold. zhang Reviewed By : Wade. Lv Approved By : Ivan Su This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in the report. Report No.: TBR-C-202604-0523-11 Page: 2 of 8 www.cotecna-toby.com TB-RF-073-3.1 CONTENTS CONTENTS ............................................................................................................................................. 2 1. GENERAL INFORMATION ABOUT EUT.............................................................................. 4 1.1 Client Information ................................................................................................................. 4 1.2 General Description of EUT (Equipment Under Test) ................................................... 4 2. MEASUREMENT UNCERTAINTY .......................................................................................... 5 3. TEST FACILITY.......................................................................................................................... 6 4. METHOD OF MEASUREMENT FOR FCC............................................................................ 7 4.1 EUT Operation Condition: .................................................................................................. 7 4.2 Exposure Evaluation: .......................................................................................................... 7 4.3 Simultaneous transmission MPE Considerations ........................................................... 7 4.4 Test Result ............................................................................................................................ 8 Report No.: TBR-C-202604-0523-11 Page: 3 of 8 www.cotecna-toby.com TB-RF-073-3.1 Revision History Report No. Version Description Issued Date TBR-C-202604-0523-11 Rev.01 Initial issue of report 2026-06-09 Report No.: TBR-C-202604-0523-11 Page: 4 of 8 www.cotecna-toby.com TB-RF-073-3.1 1. General Information about EUT 1.1 Client Information Applicant : SHENZHEN KERUI SMART TECHNOLOGY CO., LTD. Address : Room 1501, T2, Jinlitong Building, No. 1100, Xingye Road, Xin'an Street, Bao'an District, Shenzhen, Guangdong, China Manufacturer : SHENZHEN KERUI SMART TECHNOLOGY CO., LTD. Address : Room 1501, T2, Jinlitong Building, No. 1100, Xingye Road, Xin'an Street, Bao'an District, Shenzhen, Guangdong, China 1.2 General Description of EUT (Equipment Under Test) EUT Name : Water Leak Detector Models No. : WD94, WD94x2, WD94x3, WD94x4, WD94x5, W13+WD94, W13+WD94x2, W13+WD94x3, W13+WD94x4, W13+WD94x5, W13+WD94x6 Model Different : All these models are identical in the same PCB layout and electrical circuit, only difference is appearance color. Product Description : Operation Frequency: 433.92MHz Modulation Type: ASK Antenna Gain: -9.62dBi PCB Antenna Power Rating : DC 3V Software Version : 0xB9699A Hardware Version : WD94-V1.1 Remark: The above antenna information is declared by manufacturer and for more detailed features description, please refer to the manufacturer's specifications, the laboratory shall not be held responsible. Report No.: TBR-C-202604-0523-11 Page: 5 of 8 www.cotecna-toby.com TB-RF-073-3.1 2. Measurement Uncertainty The reported uncertainty of measurement y±U，where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %. Test Item Parameters Expanded Uncertainty (ULab) Conducted Emission Level Accuracy: 9kHz~150kHz 150kHz to 30MHz ±3.50 dB ±3.10 dB Radiated Emission Level Accuracy: 9kHz to 30 MHz ±4.60 dB Radiated Emission Level Accuracy: 30MHz to 1000 MHz ±4.50 dB Radiated Emission Level Accuracy: Above 1000MHz ±4.20 dB RF Power-Conducted Level Accuracy: Above 1000MHz ±0.95 dB Power Spectral Density- Conducted Level Accuracy: Above 1000MHz ±3dB Occupied Bandwidth Level Accuracy: 30MHz to 1000 MHz Above 1000MHz ±3.8% Unwanted Emission- Conducted Level Accuracy: 30MHz to 1000 MHz Above 1000MHz ±2.72 dB Temperature / ±0.6°C Humidity / ±4% Supply voltages / ±2% Time / ±4% Report No.: TBR-C-202604-0523-11 Page: 6 of 8 www.cotecna-toby.com TB-RF-073-3.1 3. Test Facility The testing report were performed by the Shenzhen Toby Technology Co., Ltd., in their facilities located at 1/F., Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. At the time of testing, the following bodies accredited the Laboratory: CNAS (L5813) The Laboratory has been accredited by CNAS to ISO/IEC 17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories for the competence in the field of testing. And the Registration No.: CNAS L5813. A2LA Certificate No.: 4750.01 The laboratory has been accredited by American Association for Laboratory Accreditation(A2LA) to…

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2026-5-16 1 SHENZHEN KERUI SMART TECHNOLOGY CO.,LTD Room 1501, T2, Jinlitong Building, No. 1100, Xingye Road, Xin'an Street, Bao'an District, Shenzhen, Guangdong,china 1.Test Equipment & Condition 1.1 Network Analyzers : KEYSIGHT P5002A 1.2． Communications Test Set: R&S CMW500 1.3 3D Chamber Test System:64 Probe testingsystem 2026-5-16 2 2. Mechanical instruction 2026-5-16 3 3. 2D direction diagram 2026-5-16 4 2026-5-16 5 2026-5-16 6 2026-5-16 7 2026-5-16 8 2026-5-16 9 4.Gain & Efficiency& 3D Pattern Frequency ID Frequency ( MHz) 430431432433434435 Gain (dBi) -9.02-9.15-9.53-9.62-9.10-9.51 Efficiency (DB) -11.85-11.72-11.25-11.67-12.15-12.23 2026-5-16 10 2026-5-16 11 5.VSWR

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202604-0523-12 Page: 1 of 31 TB-RF-073-3.1 1/F., Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Email: [email protected] www.cotecna-toby.com RF Test Report FCC ID: 2AZI3-WD94 Report No. : TBR-C-202604-0523-12 Applicant : SHENZHEN KERUI SMART TECHNOLOGY CO., LTD Equipment Under Test (EUT) EUT Name : Water Leak Detector Model No. : WD94 Series Model No. : WD94x2, WD94x3, WD94x4, WD94x5, W13+WD94, W13+WD94x2, W13+WD94x3, W13+WD94x4, W13+WD94x5, W13+WD94x6 Brand Name : N/A Sample ID : HC-C-202604-0523-01-02-1#&HC-C-202604-0523-01-02-2# Receipt Date : 2026-05-19 Test Date : 2026-05-19 to 2026-06-08 Issue Date : 2026-06-09 Standards : FCC Part 15, Subpart C (15.231(a)) Test Method : ANSI C63.10: 2020+Cor.1:2023+C63.10a:2024 +Errata to C63.10a:2024 Conclusions : PASS In the configuration tested, the EUT complied with the standards specified above, The EUT technically complies with the FCC requirements Tested By : Gold. Zhang Reviewed By : Wade. Lv Approved By : Ivan Su This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in the repor Report No.: TBR-C-202604-0523-12 Page: 2 of 31 www.cotecna-toby.com TB-RF-073-3.1 Contents CONTENTS ............................................................................................................................................. 2 1. GENERAL INFORMATION ABOUT EUT.............................................................................. 5 1.1 Client Information ................................................................................................................. 5 1.2 General Description of EUT (Equipment Under Test) ................................................... 5 1.3 Block Diagram Showing the Configuration of System Tested ...................................... 6 1.4 Description of Support Units .............................................................................................. 6 1.5 Description of Test Mode .................................................................................................... 6 1.6 Description of Test Software Setting ................................................................................ 7 1.7 Measurement Uncertainty .................................................................................................. 8 1.8 Test Facility ........................................................................................................................... 9 2. TEST SUMMARY ..................................................................................................................... 10 3. TEST SOFTWARE ................................................................................................................... 10 4. TEST EQUIPMENT AND TEST SITE ................................................................................... 11 5. CONDUCTED EMISSION TEST ........................................................................................... 13 5.1 Test Standard and Limit .................................................................................................... 13 5.2 Test Setup ........................................................................................................................... 13 5.3 Test Procedure ................................................................................................................... 14 5.4 Deviation From Test Standard ......................................................................................... 14 5.5 Test Data ............................................................................................................................. 14 6. RADIATED EMISSION TEST ................................................................................................ 15 6.1 Test Standard and Limit .................................................................................................... 15 6.2 Test Setup ........................................................................................................................... 16 6.3 Test Procedure ................................................................................................................... 18 6.4 Deviation From Test Standard ......................................................................................... 18 6.5 EUT Operating Condition ................................................................................................. 18 6.6 Test Data ............................................................................................................................. 18 7. BANDWIDTH ............................................................................................................................ 19 7.1 Test Standard and Limit .................................................................................................... 19 7.2 Test Setup ........................................................................................................................... 19 7.3 Test Procedure ................................................................................................................... 19 7.4 Deviation From Test Standard ......................................................................................... 19 7.5 EUT Operating Condition ................................................................................................. 19 7.6 Test Data ............................................................................................................................. 19 Report No.: TBR-C-202604-0523-12 Page: 3 of 31 www.cotecna-toby.com TB-RF-073-3.1 8. RELEASE TIME MEASUREMENT ..................................…

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FCC ID: 2AZI3-WD94 TB-RF-073-3.1 Appendix V EUT Test Photographs Photo of Setup for Radiated Emission (Below 1 GHz) Photo of Setup for Radiated Emission (Above 1 GHz) FCC ID: 2AZI3-WD94 TB-RF-073-3.1 Photo of Setup for Radiated Emission (Above 1 GHz) Photo of Setup for RF Conducted -----END OF THE REPORT-----