ET30

Pretty handy, when you need it. Worked for my application. May never use again in your lifetime. Can use a compass to do the same thing.

This detector is quick and accurate, detecting both AC/DC and permanent magnetic fields. Compact and easy to use, it’s perfect for troubleshooting electrical systems. Great value for the price!

The pen did not detect either AC or DC on a consistent basis, very unreliable. Instructions are not clear on either battery installation or use of device. I gave it 2 stars because the flashlight part worked well. The package cannot be used again, it had to be cut to open, and thus is not eligible for return. Changed review to 1 star, the flashlight even stopped working. You get what you paid for, or less, with this item. Do not buy!

Bought it on a whim. It really works. Still experimenting with it, but it is a real tool.It will not sense magnetic field from low to moderate DC current flow in a single wire.It will not sense magnetic field in a refrigerator magnet. See Halbach Array on Wikipedia.

Awesome tool, great price and works perfect.

Bought this because I was having issues with my vehicle. At first, I didn't think it was working, but then realized it worked all along. It definitely gets the job done.

LED flashlight on back works fine. The product has only indicated 1 battery for me though. Does not work correctly on AC or DC reliably.

Not so efficient compare to elma magnetic stick. To press the test button in small space can be a challenge.