When pressed, the button sends a signal to the actuators of the convenient electrical installation. There is no need to distinguish between blinds, dimmers, etc. or changeover, crossover switches, blind switches, etc. The device is powered by a button battery and can therefore be easily attached anywhere (screwed and glued). Due to the flat design, NO switch, junction or installation box is required. The button is compatible with many 55mm frames from the switch industry (compatibility list provided). Battery included in delivery.