Houses4Rent I would stick with a test lamp for voltage and a bell tester for continuity (you get a buzzer on most of the Digital Multimeters normally on diode test function) my favourite instrument is a line tester Duspol it gives led indication for A.C. and D.C. in range of Voltages from 6 to 500 and has a photocell powered continuity tester. Batteries dont go flat no ghost readings easy to handle no test leads breaking down straight forward indicates 230V or 400V in glowing red L.E.D.'s