AEMC 1026 Battery Operated Megohmmeter, 1000VDC. More details: Battery Operated Megohmmeter, Output Test Voltage 250/500/1000VDC, Insulation Resistance Range 1K to 4000 megohm, Live Circuit Detection 0 to 600VAC/DC, Resistance Range 0 to 4000 ohm, Display Digital LCD, Auto Power Off Yes, Safety Rating CAT III 600V, Auto Ranging Yes, Power Source (8) AA Batteries, Includes Soft Carrying Case, Test Leads, Screw On Alligator Clips, (8) AA Batteries and Instructions, Manufacturers Warranty Length 1 yr.