I ordered the 2 dog set, unfortunately when it came in it was not working properly. However, customer service was fantastic and sent another set to me right away. I love the range of settings on training mode- being able to adjust the beep, vibrate, and shock level individually is very handy. I do wish I could set it just to beep/vibrate when on fence mode, as our one dog is very sensitive. If they ever do an another version of this that would be my only upgrade request.