This is a great little tester, probably the best I've used to date. Simplest to use and with just the right amount of features needed for most applications in the field. Although I prefer my multi-tester for more accurate readings these type testers have their place.

   • Klien RT310 tester illustrated on Arc...   GFCI / AFCI tester

   • Klein CL 320 kit, RT310 AFCI / GFCI t...   Klein CL 320 kit