DALI/DSI control unit installation for simultaneous control of up to 25 DALI or DSI compatible lamp operating devices, dimming range 1 to 100%, two-wire control cable on the output side, polarity can be reversed, use of standard installation material. On the input side, connection option for commercially available single or double light buttons, optional connection option for scene buttons, optional connection option for motion detectors, connections are made via plug-in terminals, housing made of polycarbonate (PC), flame-retardant, halogen-free, suitable for luminaire installation or ceiling installation, protection class IP20, protection class II with mounted strain relief. Dimensions: 281 x 50 x 21 mm, weight: 0.14 kg