Fibaro door/window sensor 2 is a wireless, battery powered hall-effect contact sensor. Changing the device's status will automatically send signal to the controller and associated devices. Sensor can be used to trigger scenes and wherever there is a need for information about opening or closing of doors, windows, garage doors, etc. Opening is detected by separating the sensor's body and the magnet. In addition the Fibaro door/window sensor 2 is equipped with a built-in temperature sensor.