Need to see how much voltage is running through your wires? We've got the testers to help you do just that, whether you're a professional or a hobbyist. We've got a wide variety of testers that can measure AC/DC volts, A/C amps, resistance, continuity, and amperage. We even have several models of voltage testers available that require no direct contact to the actual wire; just point your tester toward it to easily and quickly get your results, without risking the potential for electric shock.