Water Sensor is a wireless water leak sensor powered by CR123A battery, you can receive immediate alerts if there is unwanted water in your home (such as in a basement, near a water heater, under an old pipe, or in a bathroom), helping you prevent leaks from turning into floods. This sensor integrated Z-Wave communication module to connect with Z-Wave gateway, and this device can be adapted to EU(868.42Mhz). Water leak sensor is an important part of home automation, and it can be set different modes according to different scenes, adopt battery for power.