Measuring the resistance of the grounding bus and the connection contacts (± 0.5%)
5 ranges, high resolution (100 μOhm), 3 values ​​of the test eye (1 mA, 10 mA, 100 mA)
Microprocessor control

4-wire resistance measurement circuit
Power 220 V / 50 Hz

Auto-hold of the measurement result, auto power off
Warning of a dangerous voltage in the circuit, overload protection
Indication of instrument modes and conditions
Dust and water tight version