Digital Ground Resistance Tester Meters 3-Wire 2-Wire Earth Ground Resistance Meter with Range 0.00ohm to 2000ohm Range 0 to 600V 400 Sets Data Storage Rechargeable Lithium Battery IEC61010-1
Digital Ground Resistance Tester Measuring Method:Earth ground resistance: rated current change-pole method, measurement current 3mA Max,820Hz; Earth Voltage: average value rectification