This sensor monitors leakage and sends an alarm when flooding or leakage is detected. The sensing device can be away up to 2 m from the main device. The unit can be mounted on every flat surface. The installation can be done with screws or double-sided tape.The device is a battery-powered device, which is in non-operating state unless an action is detected. After a programmable sleeping time the device wakes up and sends status information. After this the unit goes back to non-operating state. The unit will sends a warning to the Z-Wave controller, when batteries need to be replaced. The units send information to a controller or any other associated Z-Wave device. The device has a tamper switch which sends an alarm to the controller when it will be opened.