This is a Tridonic TALEXXconverter LCAI 55W 900mA–1750mA ECO C. This part is a constant current LED control gear for 1,750 mA LED modules. It has a dimming range of 0-100% and has a dali control input. This ballast has a nominal life time of up to 70,000 hours. Tridonic part code: 28000128