Prevent expensive water damage: the SmartThings water detector detects leakage early and monitors the ambient temperature Easy to use: simply place the water detector on the floor, for example in the kitchen, bathroom or cellar. Alarm: the water sensor alerts via SmartThings app and can be integrated into smart actions. Let lights flash or turn on sirens. Real time alarm: the water detector is equipped with two contact points on its bottom and top, which sends an alarm via Zigbee radio to the SmartThings Hub when in contact with water. Zigbee wireless standard: the sensor works with the Zigbee radio standard. A Zigbee hub or gateway, such as the SmartThings Hub is required.