You can use the flush-mounted receiver to switch a load (for information about permitted loads, see the "Technical data" section) on and off via radio signal. When it receives the radio signal, the flush-mounted receiver switches its contact. If, for example, you want to switch an existing ceiling lamp on and off with a radio push-button instead of the installed switch, the switch needs to be bridged (continuous phase to the receiver). You can use the Merten CONNECT radio button, the Merten CONNECT radio remote control or the Merten CONNECT radio central unit as the transmitter.