Radio 1-channel button in E-Design55 for call systems, 80x80mm outside, frame inside dimensions 55x55mm, 15mm high. Generates the energy for radio telegrams even when the button is pressed, therefore no connection cable and no standby loss. Radio buttons with a rocker can send an evaluable signal: press the rocker at the bottom in the area of the marking. The mounting plate can be screwed over a device box with a screw spacing of 60mm or onto a flat surface. The wireless button can be stuck to the wall, glass or furniture using the included adhesive film.