Homematic IP Universal Dimmer Attachment - Push Button #162315A0 Conveniently dim your lights with the push of a button With the Homematic IP Universal Dimmer Attachment -PushButton, you can conveniently control anddimyourlightsin your smart home when used in combination with the Universal Dimmer Module. Two buttons allow for intuitive operation right on the wall: Turn lights on or off with a short press and adjust the brightness to your liking by holding down a button.