it's basically an extra set of solenoids. so if your alarm has the capacity to control additional accessories, you should have no problem controlling them with the existing remote, you just wire them into the existing alarm.
Looks like a nice accessory, and not just for security. Lot's of hardcore racers weld their doors shut so they won't pop open in a wreck, and to help increase chassis stiffness. This would serve the same purpose, but it has the added convenience of allowing the doors to open normally.
Would also help prevent carjackings too.