UNI-T UT513A Digital Insulation Resistance Tester  Features: Auto Range: √ Auto Power Off: √ Secondary Display: √ Low Battery Indication: √ Data Logging: 18 Comparison: √ Polarization Index(PI): √ Dielectric Absorption (DAR): √ USB Interface: √ LCD Backlight: √ Analogue Bar Graph: 30 Over Range Warning: √ High Voltage Indication: √ Timer: Around 15 minutes Specification: Model: UT513A Insulation Resistance(Ω): Test Voltages: 500V/1000V/2500V/5000V 0%~20% ; 500V: 0.0MΩ~20GΩ ±(3%+5); 1000V: 0.0MΩ~40GΩ ±(3%+5); 2500V: 0MΩ~100GΩ ±(3%+5); 5000V: 0MΩ~1000GΩ ±(3%+5) Short Circuit Current: >3.0mA DC Voltage (V): 600V ±(2%+3) AC Voltage (V): 600V ±(2%+3) General Characteristic: Power: 8 * 1.5V Alkaline Batteries(LR14) (not included) Product Net Weight: 1.8Kg Product Size: 202mm * 155mm * 94mm LCD Size: 123mm * 58mm Product Color: Red & Grey Package Size: 32.5 * 31 * 12cm / 12.7 * 12.2 * 4.7in Package Weight: 4031g / 8.9lb Package List: 1 * UNI-T UT513A Insulation Resistance Tester 2 * one plug test lead to one alligator clip(Black and Green) 1 * two plugs test lead to one alligator clip(Red) 1 * Power Adaptor 1 * USB Cable 1 * Tool Box 1 * PC Software CD 1 * English Manual