I just went and had a whole new alarm system installed along with the remote start. It has the pager system so if someone or something sets off the alarm my remote starts to vibrate and a car shows up on the little screen with a hammer beat-n it...Its a cool system I however do still have a vacant button on it. I have done checked into either have that set to role the windows up or down or have-n it set to unlock the back door...Would probably get more use out of the back door thing...Nice system by Crimestopper, cost me about $500.00 and will cost around another $200.00 to get the other option installed?? Kinda price-E!!! Remote start is the best thing invented yet!!