Features: 1. Test the insulation resistance with 50V-1000V voltage. 2. Automatic calculation of PI (polarization index) and DAR (dielectric absorption ratio). 3. With backlight display and auto power off. 4. Check the insulation of high voltage electrical equipment such as motor, transformer, cable, etc. 5. Can also be used to AC/DC voltage measurement and continuity test. Specification: Technical Parameter Output Voltage Measuring Range Insulation Test 50V (0 %~+20%) 0.01MΩ~50MΩ ±(3%+5) 100V (0%~+20%) 0.01MΩ~100MΩ ±(3%+5) 250V (0%~+20%) 0.01MΩ~250ΩM ±(3%+5) 500V (0%~+20%) 0.01MΩ~500MΩ ±(3%+5) 1.00GΩ~5.00GΩ±(5%+0.1GΩ) 1000V (0%~+20%) 5.00GΩ~10.00GΩ±(10%+0.2GΩ) Short Circuit Current 1.8mA Multimeter Functions DC Voltage Test 0.1~1000V±0.5% AC Voltage Test 0.1~50V±1% Continuity Test 0.01Ω~200Ω±0.5% Characteristics Auto Calculate PI and DAR Data Storage / Loading Data Comparision Auto Discharge for Capacitive Load Timer Function for Insulation Test Lock Function For Insulation Test Low Battery Indication DC / AC Voltage Test Continuity Test Auto Power Off Digital and Analog Display General Parameter Brand PEAKME TER Model MS5203 Power Supply 6 x 1 . 5 V A A Batteries ( NOT include d ) Item Size 19*15*7cm / 7.48*5.91*2.76in Weight Approx. 1977g Safety Rating CE CAT.III 1000V CAT IV 600V RoHS Package Includes: 1 x MS5203 Digital Insulation Tester 1 x User Manual 2 x Alligator Clips 2 x Test Leads 1 x Hand Bag 1 x Sling .