Universal Input: 100~240VAC 50~60Hz Protections: Short circuit/ Overload/ Over temperature O/P: High accuracy, low noise; Hold up time 20mS Cooling by free air convection; Auto recovery; Operation temperature: -10~+40; 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 EN60950 /UL60950 /EN55022.