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 All using 105o C long life electrolytic capacitors Withstand 300VAC surge input for 5 secound High operating temperature up to 70oC Withstand 5G vibration test No load power consumption <0.5W High efficiency,long life and high reliability