LED POWER SUPPLIES 120 & 277 VAC, 90% EFFICIENCY, RECTANGULAR ALUMINUM CASE, TRI-MODE DIMMING (FORWARD, REVERSE PHASE & 0-10V), 1-100% DIMMING RANGE, 50 W MAX, PROGRAMMABLE 425 TO 850 MA IOUT, 56 V MAX VOUT (DRACO5 INTERNAL ERP CODE NAME)