What does this do?

[Dempz]

Hey guys. Popped bonnet today just to check all was well, noticed this was unplugged, any idea what it is? Hasn't effected the car at all, no idea how long it's been unplugged either. Cheers.
http://i50.tinypic.com/30w9y5g.jpg

[saxova]

Not sure, but looks like its the right connector for that alarm siren.

[DanTvts]

Its that alarm siren deffo, probably had a problem with the alarm going off randomly, quite common on saxos!

[Dempz]

Cheers guys, only had it a week or so. Loving them so much, just want to know as much as possible about what I'm driving :)