22161824 DIMLITE multifunction 4ch Multipurpose DALI/DSI control unit for controlling four luminaire groups independently. Four control outputs, each providing individual automatic switching for DSI and DALI compatible lamp control gear. Up to 25 DALI ECGs or 50 DSI ECGs per output channel. Dimming range: 100 to 1 %. The lighting control unit has a built-in 10 Amp relay, which can be used to isolate the lamp control gear from the power supply when the control gear is not switched on. Screw-terminal connections Housing designed for installation in control cabinets and is made of grey (RAL 7040) flame-retardant polycarbonate, halogen free, with status LED and test button, Dimensions: 140 x 90 x 59 mm, weight: 0.36 kg.