- Input Impedance:500M Ohm. - Attenuation Ratio1000 : 1 - Accuracy: DCV (0 ~ 20kV) +/- 1%, DCV (20kV ~ 30kV) +/- 2%, ACV (0 ~ 20 kV) typically +/- 5% at 60Hz - Max. Working Voltage: 30kV DC or 20kV AC - Operating Temperature: 0 degree C ~ 50 degree C ...