The Extech 380260 Autoranging Handheld Digital Megohmmeter, 1000V with large dual backlit display measures insulation resistance up to 2000MΩ; it has 250, 500 or 1000VDC test voltages to choose from. The large backlit dual display indicates test voltage output and insulation resistance, with low resistance, continuity and AC/DC voltage measurement functions. Other features include automatic discharge at the end of test, protective holster with stand, power lock on feature and data hold.