The meter is completely portable, LCD, 3 1/2 digit clamp meter with insulation test function (with option 500V insulation tester unit). It has been designed according to IEC1010-1 IEC1010-2-032 concerning electronic measuring instruments with an overvoltage category (CAT II 1000V & CAT III 600V) and pollution 2 and safety requirements for hand-held current clamps for electrical measurement and test.