General Technologies Corp GTC CT8002 Cordless Circuit Tester, Black

Works as it should. These guys are worth their weight in gold around my shop

solid design and build. works as advertised and provide real convenience.

only tried it .seems to actually work.great idea if it works consistenly

GREAT product & price, works wonderful! Quality made.

After using one of these testers you will throw your old corded one away nice bright red light and beep lets you see and hear to see if there is power to the circuit you are testing without worrying about you ground wire falling off when you are upside under a dash or trying to get a good ground simply hold the tester and touch any metal part of what you are working on with any part of your body that has skin exposed forearm,elbow other hand etc many time you are already touching some thing that has a ground battery last forever this is my second one first one lasted me 3 years of hard use many falls and the battery was still good

I always forget I have this tool but whenever I do use it, it works well.

This tester is a cheap and affordable way to check for voltage. You just have to make sure you use your body as a good ground and remember that. Doesnt take the place of the good multimeter but I use it daily for quickly checking fuses

Although it is vaguely buried in the description, I dont think it is clear that this unit ONLY detects positive (+) DC current. If you work on pre-World War II antique cars this unit will not identify a live circuit on positive ground systems. The tech support folks at GTC were very helpful in identifying this limitation. It works fine on modern cars and other low voltage negative ground systems. Unfortunately, it is useless for my applications.

The end that holds the battery has a screw that was put in sideways so hardly holds the batteries in, pretty cheaply made wouldnt buy again.

Useful tool, no need to clip on a ground wire just touch a bare body part or fastener. The point is a bit fat and clumsy, it could do with a real fine needle point or a proper wire gripper/piercer like a test probe to cleanly penetrate the wire insulation without damaging the wire.