Yeah, its the classic chirp confirmation. Do be careful what you leave in the car. And that really goes for anytime you are away from your car while being serviced. I used to get a magazine called Installation News. It was basically a mobile security magazine. It told of a lot of things like that. ESPECIALLY in the car audio world things can happen. It is real easy to program a third (or fourth) transmitter to your car. The theif walks up, disarms the alarm (some alarms can do it silently from the remote, no chirp), and takes what he/she wants. Some alarms (like the
Omega family of alarms) will flash the LED to let you know how many remotes are coded to your alarm every time you turn your key on.