
measures
Uz response voltage of the arrester, distinguishes gas discharge arresters from varistors and displays
at gas discharge arresters its sparkover voltage
at varistors its varistor voltage @ 1mA

measures
Risol Insulation resistor
using 250V as defined by standard
IEC 60364 6 (DIN VDE 0100-600)
when surge protection devices are connected to
low-voltage installations.

runs for hours with a simple 9V Battery

proprietary Calibration at fixed price