I'm ideally looking for an Alarm which has a proximity/motion/vibration sensor, so that if the car is disturbed it will sound an alarm/the horn. I don't need an immobiliser, central locking or anything along those lines.
Any suggestions that won't break the bank?
/edit.
I've found this, which is literally a shock sensor that you can adjust the sensitivity for (which as stated is all I need) anyone have any experience with them?
http://www.maplin.co.uk/easy-fit-car...c=so&u=strat15
