With the 380395 measure Insulation Resistance to 60GΩ with test voltages of 500V, 1000V, 2500V, and 5000V. Featuring polarization Index measurement (PI), Dielectric Absorption Ratio measurement (DAR), AC/DC Voltage measurement to 600V with Min/Max, Peak and Relative functions, and 1 to 15 minute timer function for IR measurements. Comes with test leads, eight C batteries, 120V AC adaptor, heavy duty carrying case, and user manual.