What is the procedure for these dam things, we have 2 around here that randomly go off at all times. Sometimes not for ages but then a spell where its on and off all night. I have found out where the main offender is coming from (address) but im not sure if this is a police matter or an environmental health one, there doesnt seem to be anyone in the house but im reluctant to call the police as i dont really see what they can do.
Contact your council The first thing they will ask is for you to start a log of the times it goes off and how long for. Without the date and time log they wont be able to do anything. If you get on well with people in your area ask them to do the same. The more people reporting it the quicker it should be dealt with.
it might be worth speaking to the homeowner first - the council won't do much unless you have tried to mediate the problem yourself and got nowhere.
We have a college a few doors up that is now empty, The Alarm kept going off. The Alarm got ripped off the wall by one of the local residents & it now don't bother anybody. Obviously I didn't rip it off the wall in a frenzy & I am not suggesting you do the same.
Most effective way is to use fire extinguisher foam to freeze it & then Whack it with a hammer, Apparently it shatters making very little noise. I read this on wikigooglebooktwitterface.com whilst playing FPS games which forced me to think about it but not actually do it.
Try and find who owns it first and try speaking to them about it before taking it any further. The house opposite mine goes off about once a month but it must be linked to the police because every single time it goes off we have about 3-4 police cars surrounding the place within minutes! It is a huge place though and I know the woman who lives there is a high court judge, the police must be pretty annoyed about it now.
Why not just phone the police from a payphone and tell them you've seen someone breaking into said properties?