... years 4) CE,UL,ROHS approval SMT-12020M001 series (waterproof Constant Voltage LED driver)we give at least 2 ... efficiency by constant voltage • Passed high ,low temperature and waterproof testing. • Integrity protection,over loading, over voltage , ... , Telecommunications, Networks, Vehicle Lights, Controller Panels, etc. Waterproof Constant voltage LED driverinput: 100~305vAC, 47~63Hzoutput: 24vDC ...