... °C,Mil-HDBD-217F)5. certificates:CE,CB,UL,GS,SAA,ROHS ect6.Portable and low leakage current, low audio noise.7.Tolerance ... .insulation resistance:DC 500V 100MΩ(min) universal switching power supply for electronics with 60Hz frequency,output 12w max and UL,FCC,ROHs marks