Voltcraft digital multimeters voltcraft vc135 the voltcraft vc 135 digital multimeter is ideal for measuring and displaying electric parameters in the range of excess voltage category iii up to max 600v against ground potential pursuant to en 61010 1 and the following categories measuring direct and alternating voltage up to a maximum of 600v measuring of resistance up to 20momega acoustic continuity check diode test and non contact 230vac voltage testthe two measuring inputs are