Supported by an E-square memory backup chip and a built-in 9-volt backup battery, the Bulldog 6002Pro professional car alarm offers silent arming/disarming, both confirmed with chirps. Three chirps when disarmed indicate your vehicle was trespassed while the system was armed. Press any of the four buttons on your remote to turn off the siren. For your added safety, Bulldog 6002Pro will turn on parking lights or headlights and automatically start your car. Among other features are keyless entry and an automatic annoyance override that automatically shuts off the errant trigger if the alarm is triggered three times in a row by the same trigger. All other functions remain as they are.

In high-theft areas you can program the alarm to sound every 20 seconds to warn off potential brigands. In situations where your car will be subjected to unusually heavy vibrations--when you park in heavy rain, near a construction zone, or near railroad tracks, for example--you can reduce the sensitivity of your alarm by 50 percent or shut down the shock sensor completely. The Bulldog 6002Pro comes with two stickers to alert potential troublemakers, and a limited lifetime warranty.