Wireless 4-channel button in E-Design55, 80x80mm outside, frame inside dimensions 55x55mm, 15mm high. Very quiet and with battery (service life 2-5 years). Wireless buttons with double rocker can send four evaluable signals: press two rockers at the top and two at the bottom. The mounting plate can be screwed onto a flat surface or stuck to the wall, glass or furniture with the included adhesive film. The sleeves in the box are used for screw fastening over a 55 mm switch box.