

Milesight
Thr Milesight WS303 Mini Leak Detection Sensor is designed for detecting the presence of minor to major water leaks and transmitting an alarm using LoRaWAN® technology. With this low power consumption technology, this sensor can work for up to 5 years with a 590mAh battery. Compliant with the Milesight D2D (Device to Device) protocol, it can directly link with other Milesight devices to realize danger prevention and effectively prevent unnecessary loss. The wire-free WS303 can be easily used in smart offices, buildings, and houses. Users can receive real-time alarms via a built-in buzzer locally and a mobile App remotely. Combining with Milesight LoRaWAN® gateway and Milesight IoT Cloud, users can manage all sensor data remotely and visually.
Wireless Transmission | |
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Technology | LoRaWAN®, Milesight D2D |
Frequency | CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4 |
Tx Power | 16 dBm (868 MHz) / 20 dBm (915 MHz) / 19 dBm (470 MHz) |
Sensitivity | -137dBm @300bps |
Mode | OTAA/ABP Class A |
Leakage Detection | |
Liquid Type | Conductive Liquid |
Trigger Condition | Once Liquid Level Reaches 0.5mm |
Others | |
Buzzer | Support |
Configuration | NFC Configuration via Mobile App |
Advanced Feature | Milesight D2D Controller |
Physical Characteristics | |
Power Supply | 1 × 590mAh CR2450 Lithium Battery |
Battery Life | 5 years (One hour leakage per week, 25°C) |
Operating Temperature | -10°C to +60°C |
Relative Humidity | 0% to 100% (Non-condensing) |
Ingress Protection | IP67 |
Dimension | 63 × 63 × 14 mm |
Material & Color | ABS+PC, White |
Installation | 3M Tape Mounting, Desktop |