Extech MG320 Insulation Tester, Green

Amazon

Measure Insulation Resistance to 20GΩ Polarization index (pi) and dielectric absorption ratio measurements (DAR) Low resistance measurement with zero function Programmable timer feature sets the duration of Test, Weight: 1.2 pounds, Manufacturer: Extech

Test-meter.co.uk

Extech MG320 Insulation Multimeter. Measures 0-20GΩ insulation, 50-1000V test voltages, AC/DC 600V, resistance to 20kΩ. PI/DAR modes, 99-reading memory, Cat IV 600V safety. Includes leads, case, 1-year warranty.