1This insulation resistance tester can measure insulation resistance, AC voltage, etc 2High degree of accuracy, stable performance, easy operation and reliability. 3Support automatic measurement, low battery indication, LCD backlight, alarm light display, alarm buzzer 4Widely used for insulation resistance measurement for insulation materials and various kinds of electric equipments such as transformer, electric machines, cables, switches, electrical appliances 5I is a ideal tool for electric equipment maintenance, testing and inspection Features: This insulation resistance tester can measure insulation resistance, AC voltage, etc.High degree of accuracy, stable performance, easy operation and reliability. Support automatic measurement, low battery indication, LCD backlight, alarm light display, alarm buzzer.Widely used for insulation resistance measurement for insulation materials and various kinds of electric equipments such as transformer, electric machines, cables, switches, electrical appliances.I is a ideal tool for electric equipment maintenance, testing and inspection.Specification:Display: LCD, 1999 count Overload Indication : "5.5G" for insulation resistance measurement; "OL V" forvoltage measurement. Accuracy: (a% reading + digits); calibration per year Working Temperature: 0-35 Working Humidity: 75% Working Altitude: 2000m Storage Temperature: -20~60 Storage Humidity: 80% Battery: 6pcs x 1.5V Battery (NOT included) Size (Approx.): 150*100*71mm/5.9*3.9*2.8in Weight (Approx.): 837g/29.5oz Insulation Resistance MeasurementRated Voltage100V250V500V1000VTest Range0.00M~5.5G When It is about less than 4.0M, buzzer outputs alarming sounds. Note: (100V)0.00M~100MOpened VoltageDC 100V10%DC 250V10%DC 500V10%DC 1000V10%Rated Test CurrentWhen load is 100K, the rated testing current is 0.9mA ~1.1mA.When load is 250K, the rated testing current is 0.9mA ~1.1mA.When load is 500K, the rated testing current is 0.9mA ~1.1mA.When load is 1M, the rated testing current is 0.9mA ~1.1mA.Shorted CurrentAbout less than 1.8mA.Accuracy0.00M~99M: 3%+5digits; 100M ~5.5G: 5%+5digitsVoltage MeasurementAC VoltageTest Range30V~750V(50Hz/60Hz)Resolution1VAccuracy2%+3digitsPackage List: 1 x Insulation Resistance Tester 2 x Test Lead 2 x Crocodile Clip 1 x Black Bag 1 x Gallus2%+3digits