-A rugged, compact insulation resistance tester for residential and commercial electricians -Performs insulation tests from 0.01 MΩ to 2000 MΩ -Offers two insulation test voltages: 500 V and 1000 V -Includes live circuit detection to prevent insulation test if voltage >30 V is detected -Measures resistance from 0.01 Ω to 20.00 kΩ