I know the alarm works really well, after a 14 hour drive I pulled over and went to have a sleep in a truck bay, just to be on the safe side as it was in the bush still i hit the emoboliser to lock the doors.
there were about 3 road trains parked in the same truck bay and it was 2am.
all i did was roll over and all hell broke loose, the lights started flashing the forn started beeping very loudly , I sat bolt upright hit the button to unlock the car and peace prevailed. always lock the car from the door button if you wish to have a sleep in your jc. lesson learnt.