... temperature protection.3. High energy efficiency,average efficiency accord with ES&CEC08 standards.4.High reliability,long life,MTBF:100 ... voltage:100~240Vac2.Input frequency:50/60Hz3.output voltage: 4~15Vdc4.output current:1000mA~2000mA5.output wottage:12W max6.vacant load:<0. ... 500V 100MΩ(min) universal switching power supply for electronics with 60Hz frequency,output 12w max and UL,FCC,ROHs marks