Voltcraft ms 18 2 multi tester voltcraft ms 18 2 p with the voltcraft ms 18 2 you can check voltage carrying electric lines and check whether alternating voltage is applied this can be carried out either with direct contact or indirect the indirect measuring can be especially helpful with insulated lines and parts moreover the polarity of direct voltage sources can be determined p p the device can be used as a continuity tester for circuit track conductors chassis earth connections