If you don't already have a multimeter, it’s time to get one. They are fundamental in working with electricity and will be required in most of your UVC projects. We always suggest using only the best tools; however, there is room to play with multimeters. Using cheap low quality multimeters will get the job done but can often produce inaccurate readings.

The video below does a great job comparing both a budget multimeter and a professional grade multimerer. Showing the benefits of both.

Here is the best place to buy a Fluke 117 Multimeter

Here is the best place to buy a Ftekcity MSR-R500  Multimeter