Voltcraft vc820 1 digital hand multimeter voltcraft vc820 1 iso p the voltcraft vc820 1 is a digital hand multimeter that has been iso calibrated it has all the features that make a good multimeter in addition to the standard ranges voltage current and resistance the device is additionally equipped with frequency and capacitance measurement auto range diode test continuity buzzer and low battery function p p the vc820 1 can measure direct voltages and alternating voltages up to