The Extech 380260 provides three test ranges, continuity tests, and AC/DC Voltage measurements 380260: Autoranging Digital Megohmmeter 1000V digital tester with large dual backlit display Features: 250V, 500V, and 1000V test voltages Insulation Resistance to 2000MOhm Lo Ohm function for testing connections Lock Power On Function for hands-free operation Data Hold to freeze displayed reading Complete with heavy duty test leads, alligator clip test lead, 6 x AA batteries, hanging strap and hard carrying case Specifications: General Insulation Resistance 200MΩ 2000MΩ Max Resolution 0.1MΩ Basic Accuracy ±3% Insulation Test Voltages 250V 500V 1000V AC Voltage Test Yes Low Resistance Test Yes Power source 6 x AA batteries Dimensions 7.8x3.6x1.9" (200x92x50mm) Weight 24.6oz (700g) 380260 Extech Insulation Tester Megohmeter à¤Ã×èͧÇÑ´¤ÇÒÁà»ç¹©¹Ç¹