Ok, well I’ve never seen an alarm that kills an ECU. I know of many that have Ign kill, I know of many that have built in turbo timers. The problem there is any Turbo timer will make it rediculously easy for someone to steal you car.
There are multiple sirens available. There are failsafe, which rewuire a key to disarm once set off, and screamers, which are mounted in the car and will do a significant amount of hearing damage.
But from your posts, you really need to do a lot more research into what alarms are available, and what they are capable of doing for you.
No alarm will prevent someone form taking you car if they really want it, it might just slow them down
Btw, go introduce yourself in the new members thread.
get a 2 way what ever do you…im always extendo ready to break knee caps. By the time it takes them to fire up your car if their quick and your near you can be there to stop them.