A brand new CEM DT6605 digital insulation tester is certified. This top-of-the-line device provides 500V, 1000V, 2500V and 5000V voltage during the test cycle. It sources up to 1.2mA current during the test to offset the capacitance load. With the auto range function, it can measure up to 60 Giga Ohm with the resolution of 10 mega ohm. The back light LCD screen allows you read easily in the dark. It also comes with a heavy duty carrying case to protect your device when working in the field.