A multimeter is a powerful tool for measuring electrical values such as voltage, resistance, and current, commonly used in ...

For all of you who have a multimeter thrown in a drawer or toolbox but don’t know how to use it, these instructions will help in your search for missing voltage.

Before you start removing switches from the wall, make sure you turn off the power at the main panel. To test a standard wall switch, touch one of the probes to each of the screw terminals.