This is a multifunction instrument that can measure insulation resistance, DC voltage, AC voltage and continuity. It has a fashionable appearance and stable performance, suitable for measuring electrical machinery, cable, electromechanical equipment, telecom equipment, electric power facilities and other insulation resistance. Color: as shown. Material: Plastic. Output Voltage: 250V/500V/1000V; Test Current: 1mA; Insulation Resistance: 1M~2000M; Short-circuit Current: <1.8mA; Median Resistance: 250V/500V: 100M, 1000V: 1000M. Resistance & Continuity Test: 0~2K, <50 buzzer will make a sound, Test Current: 1mA. DC Voltage Measurement: 0~1000V; AC Voltage Measurement: 0~750V. Jack Position: Insulation Resistance: E and L; Voltage, Resistance: V/ and G. Power Supply: 6 * 1.5V AA Battery (Not included) or External DC 9V. Item Size (without Lid): 175 * 115 * 55mm / 6.89 * 4.53 * 2.17in; Item Weight (without Lid): 411g / 14.49oz. Package List: 1 * Insulation Resistance Tester, 2 * Test Pen, 2 * Alligator Clip, 1 * Strap, 1 * Storage Bag, 1 * User Manual (English).