The RCJ33 bidirectional flush-mounted receiver is used for potential-free switching of low-voltage loads with a changeover contact. Up to 32 transmitters can be taught-in. A push-button input is also available for wired operation. Programming is carried out simply by pressing a button on the device or via radio using remote learning (POTA). In addition to the ON/OFF function, the operating modes logic, dead man and timer (adjustable from 1 second to 30 hours) can be used. The flat design facilitates installation in flush-mounted boxes, behind switches or behind sockets.