SEW 8020ER 3-Wire Type Digital Earth Resistance Tester

Features:

● Capable of measuring earth resistance and earth voltage. 
● 2mA measuring current permits the testing of earth resistance without tripping earth leakage current breakers in the circuit under test.
● Frequency : 820Hz.
● 0Ω adjustment.
● Battery operated.
● Data hold function.
● Low battery indication.
● Calibration performed with supplied test leads.
● Simplified measurement probe is also provided for two-wire measuring method.