... 4) CE,ROHS,UL approval (CE/UL approved 277VAC waterproof CC LED driver )(input range: 120~305vAC)Features• Case ... material--Aluminum • waterproof Rate: IP67• Efficiency: 87%+• PFC: 0.90+• CE,ROHS ... light efficiency by constant voltage • Passed high ,low temperature and waterproof testing. • Integrity protection,over loading, over voltage ,over current ...