I like the actual operation which indicates the bus has been programmed and moves on to the next with a beep each time. However, since there were no instructions and no assistive indicators other than a low battery indicator, I had no idea the battery or tool was ready until I used it. I was expecting to see some sort of light or buzz or some indication that the tool was ready to go with a good battery e.g. B. when you turn on the Lite or something. Now that I've used it, I love it. I'll just use it next time and wait for the beep and hope that if it doesn't beep I'm guessing it's a bad tire sensor or something before I'm guessing it's a tool as there's no power to lighting has. However, it's an easy tool to use and works well, and I or anyone else can check out how it works on You Tube so you know what to expect. Just point to the sensor and press the button, wait and listen to a beep for all tires and the last two beeps. The price is better than at the dealer.