Having both battery and mains operation and four selectable DC test voltages (500V, 1kV, 2.5kV & 5kV), this tester measures insulation resistance from 100kΩ to 100GΩ.
The large, clear analogue scale also displays AC or DC voltage up to 1000V. Latching test switch allows hands-free testing. With full over-voltage and over-current protection for measurements and 4-16 hours operation from re-chargeable NiMH batteries, the E3511 comes complete in a rugged carry case. Standard accessories include locking 2m test leads with prods and clips.