Digital multimeter vc250the entry level class in the professional measurement technology due to the large lcd and displays the thick bushings assignment makes the model ideal for all professional applications up to 600 v at a keystroke the input resistance can be temporarily reduced from 10m k to 400 k in order to avoid measuring errors due to stray voltages a backup and battery change can only be deducted in measuring leads due to the power saving the electronics be used up to 6000 oper