Universal Input: 100~240VAC 50~60Hz Protections: Short circuit/ Overload/ Over temperature O/P: High accuracy, low noise; hold up time¡Ý20mS Cooling by free air convection; Auto recovery; Operation temperature: -40¡æ~+70¡æ; 100% full load burn-in test for 8 hours High Efficiency, high reliability; Built-in Class B EMI Filter Long life of 50,000Hours, 2 years warranty Compliance to EN61347-2-13 /IEC61347-2-13 /UL8750.