The L.T.F. DA18W440C2742 is a 18w 440mA constant current LED driver. It has a voltage range of 27 - 42Vdc and operates on 120Vac. The L.T.F. DA18W440C2742 is also ELV and Triac dimmable. Also, available is the DE18W440C2742 277Vac version and the DU18W440C2742 220-240Vac version.