Universal AC input/Full range Protection: Short circuit/Overload/Over voltage Cooling by free air convection LED indicator for power on 100% full load burn-in test No load power consumption<0.5W All using 105o C long life electrolytic capacitors Withstand 300VAC surge input for 5 second High operating temperature up to 70oC Withstand 5G vibration test High efficiency,long life and high reliability