I have a barker breaker. It beeps a long tone when noise makes it go off. As in YEEEEEEEEP!!! I can't stand to hear it. The next door neighbor had one & used to set it in his window facing us on steady tone so my kids wouldn't play outside. Another neighbor a block away had one. They also had an outside dog. I couldn't hear the barking that far but I could hear the wretched beeps. Why do they all aim them in my direction??? Lol