- Input Impedance: 600M Ohm. - Attenuation Ratio: 40000 : 1 - Accuracy: DCV (0 ~ 20kV) +/- 2%, DCV (20kV ~ 40kV) +/- 3% - Max. Working Voltage: DC 40kV - Operating Temperature: 0 degree C ~ 50 degree C - Storage Temperature-10 degree C ~ 60 degree C ...