voltage detector
voltage tester

But before proceeding, further confirm that the power is off by using a voltage tester, a small light bulb with two wires attached.

Then go to one switch, unscrew the cover plate, and use the voltage tester to verify that the power is off.

To test the garage outlet, use the voltage tester to make sure power is reaching it.

To determine compatibility, use a voltage tester, a tiny bulb with two wire probes attached, available at hardware stores.

For all household electrical repairs, you will also need a voltage tester.

Before proceeding, shut off power to the circuit and use the voltage tester to confirm that it is off.

Now is the time to use the voltage tester.

Now Duracell Inc. is including voltage testers - at no extra cost, the company says - in many of its popular battery packages.

Before starting, get a voltage tester, a small light bulb with two wire probes attached.

To determine whether an outlet is working, test it with a voltage tester.