ROBERTSON 3P30100 LD033C105LMA LED Driver, 33 Watt, 120-277Vac, 1050mA, Constant Current, 21-30Vdc Output, High Power Factor Auto reset after lamp replacement Open Circuit Protection, Short Circuit Protection Safety Voltage 90-305Vac, 50-60Hz UL Recognized Component, UL8750 Class 2 Power Unit, FCC Part 15 Class B, NO PCB's, RoHS Compliant Go to RobertsonDirect.com for complete technical data.