The digital insulation tester is convenient and practical, with excellent texture, and can serve you for a long time without being easily . The craftsmanship can serve you well without breaking easily. This is a very practical digital insulation tester. Features - Material: ABS, rubber, brass. - Size: 16.50X12.00X5.70cm/6.48X4.72X2.24 inch. - Automatic release of function, variable rated output , can be used in measuring the insulation resistance of various electrical equipment and insulating materials such , cable, switcher, electrical appliance, etc. - With protective sleeve, -drop, effective protect the tester from external damages. - After the test work is completed, the automatically discharges, professional, safe and accurate test. - The measurement range is 0.1M—2000M, and the range is automatically converted. - workmanship, reasonable structure, professional and practical, can bring you convenience. Specification - Output : /500V/1000V. - Short circuit current: <1.6MA - Test current: (R=250K), 500V (R=500K), 1000V (R=1M). - Range insulation resistance: : 0.1 M ~ 20M, 500V : 0.1 M ~ 50M, 1000V : 0.1M ~ 100M; : 20M~500M, 500V: 5OM~1000M, 1000V: 100M~2000M. - Median resistance: /500V: 2M, 1000V: 5M. - measurement: 750V. - Maximum display: 1999 counts. - Battery: 8 x AA battery (not included). Package list: 2 x Digital Megohmmeter 4 Cables 4 x Clamps 2 x Manual 2 x Packing Box