• Insulation range: 1507: 0.01 MΩ to 10 GΩ 1503: 0.1 MΩ to 2000 MΩ• Insulation test voltages: 1507: 50 V, 100 V, 250 V, 500 V, 1000 V 1503: 500 V, 1000 V• Automatic calculation of Polarization Index and Dielectric Absorption Ratio (only on 1507) • Make repetitive tests simple and easy with the 1507’s Compare (Pass/Fail) function (1507 only) • Repetitive or hard-to-reach testing is easy with the remote test probe • Live circuit detection prevents insulation test if voltage > 30 V is detected. • Auto-discharge of capacitive voltage • AC/DC voltage: 0.1 V to 600 V • 200 mA Continuity • Resistance: 0.01 Ω to 20.00 kΩ • CAT IV 600 V overvoltage category rating.