Accuracy: Class1.0, Class2.0 Power Consumption: Less than 2W /7VA Rated Voltage (V): 220V (extended is available on request) Frequency :50Hz Rated Current (A): 1.5(6), 2.5(10), 5(20), 10(40) , 15(60) , 20(80) (extended current is available on request) Operating Temperature:from -30 degree C. TO +60 degree C Relative Humidity: <85%