Features : Constant voltage design Universal AC input/Full fluctuate Withstand 300VAC surge enter for five seconds Protections: Short circuit/Overload /Over voltage Cooling via unfastened air convection Fully encapsulated with IP67 point (Note) Fully isolated plastic case Class Il energy unit, no FG Class 2 power unit Pass LPS Suitable for LED connected fixture or appliance(such as LED Decoration or Advertisement devices)(Note) one hundred pc full load burn-in test Low cost, high reliability 2 years guarantee