Alarm going off on its own

[s2_bo]

My S8s alarm has started to play up a bit, It goes off on its own for no apparent reason about 20 mins after its locked and then keeps going off every 10 mins or so until the car is unlocked....

Is this common if the alarm battery starts to run low? I mean the one thats under the carpet / left side passenger foot well...
I haven't tried to disable the interior sensors yet to see if they are kicking it off, i will try that tomorrow.

Thanks.
bo