Voltage testers measure the flow of electric current passing through a circuit, battery, or outlet; it is an easy-to-use tool that no electrical engineer, hobbyist, or electrician should be without.

If you have a voltage tester from Klein Tools, you'll want to check the model to make sure it's not one that was recently recalled by the U.S. Product Safety Commission. The recall was issued on June ...

Voltage tester, tick-tracer, glow-tip, non-contact voltage tester... whatever. Same thing. I call it a voltage sniffer, but the technical name for this device is a capacitive voltage sensor. That's a ...