The WS303 Mini Leak Detection Sensor is a compact LoRaWAN® water leak detection device designed to identify the presence of water or conductive liquid and trigger immediate local and remote alarms. Integrated with Microclimates EnvOS®, the sensor provides real-time leak detection events, alerts, historical logging, and system-wide monitoring for buildings, greenhouses, mechanical rooms, and critical infrastructure. With ultra-low power consumption and a highly sensitive probe design, it delivers fast response leak detection in a small, easy-to-install form factor.
Features
LoRaWAN® communication for long-range, low-power connectivity
Detects conductive liquid presence using metal probe contacts
Immediate local alarm via built-in buzzer plus remote alert transmission
Ultra-low power design enabling up to ~5 years of battery life
Powered by a replaceable CR2450 coin cell battery (approx. 590 mAh)
IP67-rated waterproof enclosure for harsh environments
Milesight D2D support for direct device-to-device alarm communication
NFC-based configuration for quick setup and commissioning
Supports standard LoRaWAN® gateways and network servers
Power failure alarm capability via internal energy storage capacitor
Designed for smart buildings, offices, residential spaces, and facility monitoring
Seamless integration with Microclimates EnvOS® for leak alerts, monitoring, and event tracking
