Review on 🔍 Extech CB10 Circuit Breaker Finder: Locate Fuses/Breakers, Test Receptacles and GFCI Circuits by Michael Bazen

Works great. There were others that calibrated themselves automatically, but the process looked tedious. And my experience with spike finders that calibrate automatically made me crave the old spike finders that had a sensitivity knob like this. I increase the sensitivity and track the area vaguely. I lower the sensitivity as I get narrower. Finally, when I have a candidate, I turn the sensitivity on until it just turns off, then check everywhere to see if it turns back on. Then just increase the sensitivity slightly until it turns on and hit the switch and it should stop. Pretty much like in the instructions. So far this has always worked. Nothing was marked on my panel. It's all now. Also, I plan to put little stickers with the number of the switch on each outlet. I'm a crazy label maker. Update: I just traced the circuits in another house. It worked flawlessly 90% of the time. I was able to reduce the other 10% to 2 or 3 breakers. So I didn't have to keep turning all the switches on and off. I am very happy with it. Mainly manual adjustment. Long live manual controls and to hell with all that self-driving car nonsense.