Specification: 1)Input AC voltage:85~132V AC or 170~264V AC(selectable) 2)Input AC frequency:47~63Hz 3)Efficiency: 25W:71%` 50W:75%` 100W:79% `200W:81% (full load against 12V single output type) 4)Output regulation:typical value of 0.5% 5)Load regulation:typical value of 1%(to main output electric circuit) 6)Trimming range of output voltage: ?0%~?5%(to main output electric circuit) 7)Ripple & Noise:1% peak value(actual value less than 20mV) 8)Over voltage protection:115%~135%(to main output electric circuit) 9)Overload protection:All output terminals are protected when short circuit or over load. 10)Holding time:typical value of 20ms when full load. 11)Temperature confficient:0.02%~0.05% 12)Operation temperature:-10~60℃ 13)Preservation temperature:-20~85℃