CentraLite’s 3-Series Moisture Sensor is a detector of any leaks in your home. It is generally placed in places which are more prone to leaks like near water heaters, drain pans, underneath sinks, etc. So when the sensor detects a leak it notifies you about the leak.
Then it sends a command through the ZigBee HA 1.2 network to the auto-shutoff valve. This valve turns off the water supply at the point of entry, thus protecting your home from expensive loss of flooding.