Looking for a gsm add on for my alarm.

[stamp]

I am looking for a gsm add on for my alarm system to send me a text if it goes off.
Can't find anything simple to do the job.
Any ideas, or can anyone make me one. Just want a sms if the alarm triggers...

[hut49]

Any good? www.dcp-shop.co.uk/buy-car-accessories/product_info.php?manufacturers_id=8_Toad_Car_Alarms_and_security_systems&products_id=11392

[stamp]

Thanks Hut.
I had found this after I posted. I think it might do what I need.
I will look into further.