Mini leak detector sensor

Mini Water Leak Sensor WS303

The WS303 Mini Leak Detection Sensor is an advanced, compact device designed for detecting water leaks. It uses LoRaWAN® technology, ensuring low power consumption and a long operational life. Suitable for both residential and commercial applications, it offers an efficient way to prevent water damage.


  • Wireless Transmission: LoRaWAN® and Milesight D2D
  • Frequency: Multiple bands including CN470, EU868, US915
  • Power: Replaceable 590mAh battery with up to 5 years life
  • Detection: Conductive liquid sensing with a small water probe
  • Alarm: Embedded buzzer for real-time alerting
  • IP Rating: IP67, suitable for harsh environments
  • Additional Features: NFC for easy configuration, compliant with standard LoRaWAN® gateways and network servers
  • Dimensions: 63 × 63 × 14 mm


Summary: The WS303 Mini Leak Detection Sensor is a reliable and durable solution for water leak detection, featuring a long battery life and an IP67 waterproof rating, ideal for safeguarding against water-related incidents in various settings.