GTCCT8007 Cordless Polarity Computer-Safe Circuit r

Wow, this thing is fantastic, I have NO idea how it works! It detects DC voltage, polarity, is SAFE FOR USE ON PCM LINES, and requires no cables or set up! Did I mention it's COMPUTER SAFE? That sure makes me feel a lot better than poking around with a test light. I wish I had known these things existed years ago!

Works great for test polarity but just don't drop it breaks very easily

Wireless and awesome!

Great, handy, and reasonably priced low voltage DC tester. As an auto/marine/aircraft mechanic I have used this tester for years.Quick shipping!!

it is so easy to use