The Aqara Water Sensor locates leaks and safeguards your home.The sensor needs a smart hub to function, and once the water level rises to 0.5mm, the smart hub sends an alarm and a push signal to your smartphone.Aqara Leak Sensor adheres to the IP67 watertight and dust-proof standard.It is designed to function in dusty and damp spaces like the basement, bathroom, or kitchen.