My fezza has the Toad C5T2 cat1 alarm & immobiliser fitted.

In the past few days I have had a problem whereby the alarm arms successfully, but within 5 mins it goes off! There is no-one about, there is nothing moving within the car.
I have also noticed that sometimes immediately before it goes off there are 5 rapid 'chirps' from the alarm.

As the alarm is all connected in with the central locking, other immobilisers and the anti-hijak system, this is becoming quite a nusance for the neighbors and scary for me as the alarm goes off whenever I use it to lock the doors etc causing me to sometimes just use the key to lock it :/.

I have checked all the contacts (bonnet etc) and they are working fine.

Ideally, if someone has a user manual detailing how to programme the alarm (as I may have buggered it up somehow) if they could post the instructions here. (the alarm was fitted when I bought the car, and I did not recieve a user manual.

Thanx in advance for any help.