You have to sweep both sides of the entire panel, ignoring any beeps you hear on this first sweep. This first sweep is called "learning the panel". Once the receiver learns the panel, sweep the second time. On the second sweep, only 1 breaker should beep, and that will be the one to turn off. If, for some reason, two breakers hit on the second sweep, then sweep a third time. You keeps sweeping until only 1 breaker hits, and it "should" happen on the second sweep, and very rarely take a third. Once that signal from the transmitter hits the panel, it will appear on all the breakers (on that phase) in the panel. The receiver is looking for the breaker with the strongest signal. It does not know what the strongest signal is, until it measures every breaker first. That is the reason you need to learn the panel first. Then, on the second pass, it can hit on the strongest signal. Once you find that breaker, you must turn off the receiver before starting again. Turning it off resets the receiver for the next measurement.