This tester is a good one. But only for AC 100 volts and up. Was it a 12 V DC tester you were looking for? 73 Dean W5GXL W5GXL@ARRL.NET > Dan, > Home Depot, about $9.99, you will like it. See link below. > > http://www.greenlee.com/product/gt-11/start.html > > -Eddie- Houston, TX