Morris Minor Owners Club

I’ve got a garage/shed alarm triggered by a sensor, it makes a loud noise, I’ve been wondering if there is a way of using this noise to activate a nearby phone, which in turn could call my phone to let me know of an intruder ? Can sound waves be harnessed somehow to do this, via a microphone, perhaps ? I can extend two wires from the phone to activate the speed dial function for the number to be called.
Maybe a bit too far fetched ?

Can't you buy sensors that call you if triggered? It might be an easier solution.

Keep the noisy one to scare the life of them.

Something like this maybe easier
https://www.amazon.co.uk/Panamalar-Wind ... hdGY&psc=1

Yes you are right, everything in one package, thanks. Plus the noisy one !