Features: built-in Emi Filter 100% Full Load Burn-in Test protection:over Voltageover Currentshort Circuit 1 Year Warranty product Desc.: 1.ac Input Voltage:88-264v Selected By Switch 2.acnput Frequency:47-63hz 3.dc Output Voltage Adjustment Range:+-5%~+-10% of Rated Output Voltage 4.output Overload Protection:110~150% Constant Current Limiting, Auto-recovery 5.output Voltage Protection:115~150% of Rated Output Voltage 6.withstand Voltage:ip-op:1.5kvac1min, Ip-fg:1.5kvac1min 7.setup, Rise, Hold Up Time:1000ms, 50ms, 20ms At Full Load and 230vac 8.working Temperature:-10 Deg C to +50 Deg C 9.storage Temperature:-20 Deg C to +85 Deg C 10.safety Standards:ul60950, En60950 11.emc Standards:en55022 12.mean Time Between Failures:>50, 000hours 12.cooling Method: Cooling By Free Air Convection