This is a multifunction instrument that can measure insulation resistance, DC voltage, AC voltage and continuity. It has fashionable appearance and stable performance, can be used for measuring electrical machinery, cable, electromechanical equipment, telecom equipment, electric power facilities and other insulation resistance.Features:This instrument applies DC voltage converter with low loss, high variation ratio, and inductive energy storage, which can convert 9V voltage to 250V/ 500V/ 1000V DC voltage.It applies digital electric bridge to measure insulation resistance, and can measure AC and DC voltage as well.It has functional characteristics of portability, wide measuring range, backlight display, and data holding.When using straps, the operator can operate the instrument with both hands, which is more humanized.The instrument has fashionable appearance and stable performance. With large LCD digital display, easy to read.With low battery indication, over-limit alarm, high-voltage alarm, safer and more convenient to use.Suitable for measuring electrical machinery, cable, electromechanical equipment, telecom equipment, electric power facilities and other insulation resistance.Comes with a protective lid for protecting the insulation resistance tester. Comes with a cloth bag for easy storage and carrying.Specifications:Color: Black & RedMaterial: PlasticOutput Voltage: 250V/ 500V/ 1000VTest Current: 1mAInsulation Resistance: 1M~2000MShort-circuit Current: 1.8mAMedian Resistance: 250V/ 500V: 100M; 1000V: 1000MResistance, Continuity Test: 0~2K, 50 buzzer will make a sound, Test Current: 1mADC Voltage Measurement: 0~1000VAC Voltage Measurement: 0~750VJack Position: Insulation Resistance: E and L; Voltage, Resistance: V/ and GPower Supply: 6 * 1.5V AA Battery (Not included) or External DC 9VItem Size (without Lid): 175 * 115 * 55mm / 6.89 * 4.53 * 2.17inItem Weight (without Lid): 411g / 14.49ozStorage Bag Size: 18.5 * 17.5 * 9cm / 7.28 * 6.89 * 3.54inPackage Size: 20.5 * 17.5 * 9.5cm / 8.07 * 6.89 * 3.54inPackage Weight: 900g / 1.98lbsPackage List:1 * Insulation Resistance Tester2 * Test Pen2 * Alligator Clip1 * Strap1 * Storage Bag1 * User Manual (English)