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