The Klein Tools RT250 GFCI Outlet Tester is a top circuit breaker tester, earning a 4.8-star rating from nearly 10,000 global users. Priced at $22, it is an important device for testing wiring ...

Shop Now For just a few dollars more than the basic model, the Klein ET310 doubles as a GFCI receptacle tester. Just plug the ...

When undertaking DIY electrical projects at home, safety should always come first. Whether you're adding a dimmer switch, installing a new light fixture, or upgrading an outlet, you should first ...