If you turn off your alarm and leave for about 1 minute, then try starting your engine. If it starts then it hasn't got an immobiliser, if it doesn't start then it has one, set the alarm then unset it to start. Some alarms come with immobilisers but I have an FTO and a Supra, neither came with alarm or immobiliser. The FTO had a TOAD fitted and came with and the Supra had a Cat 1 fitted also with an immobiliser. Hope thi helps