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. Specifications: Color: Black Red Material: Plastic Output Voltage: 250V/ 500V/ 1000V Test Current: 1mA Insulation Resistance: 1M~2000M Short-circuit Current: #xff1c;1.8mA Median Resistance: 250V/ 500V: 100M; 1000V: 1000M Resistance, Continuity Test: 0~2K, #xff1c;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): 160 * 110 * 73mm / 6.30 * 4.33 * 2.87in Item Weight (without Lid): 510g / 1.12lbs Storage Bag Size: 18.5 * 17.5 * 9cm / 7.28 * 6.89 * 3.54in Package Size: 20.5 * 17.5 * 9.5cm / 8.07 * 6.89 * 3.54in Package Weight: 930g / 2.05lbs Package List: 1 * Insulation Resistance Tester 2 * Test Pen 2 * Alligator Clip 1 * Strap 1 * Storage Bag 1 * User Manual (English)