Review on Easily Locate AC Circuit Breakers & Test GFCI Outlets with Klein Tools ET310 by Eric Currie

I was able to keep track of every outlet and ceiling light in my house for myself. There are 30 patterns in total. Using a transmitter that is also a circuit tester, I found open ground that bit me about a week ago while tracing an armored cable line. I now have a nice spreadsheet listing all the circuitry and all the crazy ways other owners have wired it up for extra padding. Simply slide the receiver's nose over the switches TWICE slowly. Ignore all signals at the first start. If you launch the Checker Nose again, the right breaker will light up.