Combination of continuity tester voltage tester for direct and alternating voltages up to 400 v and a simple tester for fault current protective switch fi the removable belt clip with magnetic holder and robust abs housing with rubber protection is the ideal tester for electrical installations and shouldnt be missing from any tool bag measurements are made even easier with the ability to attach test leads to the back side of the vc 31 the indication is done audibly via a buzzer as well as