A dimmable two-channel LED driver with DALI DT8 interface a 50 Watt maximum output power and an adjustable output current between 350 and 1050mA for each channel (via I-SELECT 2 plugs or DALI). This driver runs at an 89% efficiency with a 3-100% dimming range and has been designed with a low profile IP20 rated metal casing. Functions of this driver include constant light output (CLO) colourSWITCH with predefined colours switchDIM and colourSWITCH with memory function and protective features including overtemperature short-circuit and no-load protection.