• Designed to be attached to a door or window• When the door or window is opened it can trigger a lightwave controlled light to illuminate The Lightwave RF Magnetic Switch is designed to be attached to a door or a window. When the door or window is opened or closed, a radio signal can be sent to any Lightwave RF receiver such as a dimmer, bulb or socket. The signal will turn on or off the receiver device (s). It is also possible to preset a time delay to determine the amount of time that device is automatically turned off again.