WS303 Description
Overview
The WS303 is a tiny yet capable leak detection sensor. It detects the presence of water and sends an alarm over LoRaWAN, helping prevent damage and costly losses from undetected leaks.
Leak Detection
A small water probe detects conductive liquids and triggers as soon as the liquid level reaches just 0.5 mm. This gives early warning before a small leak becomes a major problem.
Rugged & Wire-Free
An IP67 waterproof enclosure suits harsh and wet environments, while a replaceable 590 mAh battery delivers up to 5 years of wire-free operation for clean, flexible placement.
Local & Direct Alarms
A built-in buzzer raises a real-time alarm on site, while Milesight D2D lets the WS303 link directly with other Milesight devices, without a gateway, to trigger valves or other responses instantly.
Setup
One-touch NFC configuration through the Milesight ToolBox app makes setup quick. Mount it on a desktop or with 3M tape wherever leaks may occur.










































