Here's what you need to know: 1. The manual is TERRIBLE. If you are looking for how to use this tool, go to You Tube because the user manual will not tell you anything. 2. This will NOT work with most sensors. If you use AUtel sensors, you are in good shape, otherwise it won't work.3. We figured we'd save money by buying universal sensors that can be used for almost anything and buying a programmer so we can do everything at home. But this was not the case. Even $2,000 programmers don't work with everything, so be very careful when buying. I used this programmer one afternoon and then it just died. It didn't need to be charged. He didn't intervene. A search revealed this has happened to several people, they offered a fix, my manual didn't. I opted for pickup and return.