WORKPRO Non Contact Voltage Detector, 12-1000V AC Voltage Tester, Live Wire Detector Tester, High Sensitivity Circuit Tester Pen with LED UV Flashlight, Sound and Alarm Mode, Pocket Clip

Neat little device, work's well enough for what I wanted, comes with batteries, ready to go. It does trigger when it's anywhere near mains voltage, so I was getting a warning when I was within about 12" of a live circuit, but contacting the live wire gave a faster reading, so it was accurate enough for me to ascertain whether there was voltage present when changing a light switch. Good purchase.

Does what its ment to, but VERY sensitive.

I bought this after moving house and needed to replace some light fittings and sockets. I'm not an electrician but It has proved valuable a couple of times. I always test it first on a know live cable and use it in conjunction with a neon screwdriver tester. Recommended.

Great device although seems over sensitive !

Terrible bit of work. Batteries are flimsey and are continuesly losing contact. Couldnt use this for my works day, sent it back the very next day.

Nice and easy to use

Had to wire up an outside light but had not idea if the switch inside was the correct way round. Didn't want to turn the power off, so used this to determine whether a current was present or not. Very clear indication, could then proceed with confidence.

Was going off even when not near electricity would not trust it.