Homematic IP Universal Dimmer Module #162536A1 Smart Lighting Control and Dimming With the Homematic IP Universal Dimmer Module and a compatible Homematic IP Universal Dimmer Cover, you can conveniently control anddimyour lighting in your smart home. Flexibly adjust the brightness of dimmable lights via the app, a button, or voice control, and use smart time profiles and automations to create the perfect lighting atmosphere in your home at any time.