The Hioki IR4059 is an insulation resistance tester with a voltage range from 50 V to 1000 V and a continuity tester up to 200 mA.

The Hioki IR4059 performs insulation resistance measurements with test voltages from 50 V / 100 MΩ up to 1000 V / 4000 MΩ, and continuity testing up to 200 mA.