The New Version of the Viperer (I had the Old One..SST5900 on the H3) has internal radar that senses motion inside the car and will trip the alarm. I also had the optional sensor that would trip the alarm if you jacked any tire off the ground more then 1/8'' as well as a hood sensor.
After a break in the alarm transmitts a singal to your key fob receiver up to a mile away showing where the break in has occured in relation to the part of the rig ....door...hood.....etc.
http://www.viper.com/
Check this unit Out....
http://www.viper.com/P-5702V/Viper+5...e+Start+System
Best if yo use a Autherized factory installer.