RR
We had an alarm in the house we bought. We updated it when the keypad dropped dead some years later. The unit we've got can:
monitor and register alarms with the police (if two zones are triggered)
be on whilst we're in the house
be remotely engaged.
(I could've set it up to work like a car alarm and just click a button on a unit on my keyring to engage the alarm system on the house. We chose not to because of initial outlay)
I've got it set up as a "back to base" because my wife and I work. So any one zone alarm will trigger a call to me from the alarm company (they've got 5 numbers they try until they get someone). Two zones will trigger a call to me and the police immediately. A call out fee is initiated when two zones are triggered.
I personally don't think the alarm is expensive, but that's my opinion. To keep my belongings safe, I'd most probably pay more to feel a level of comfort.
We're very happy with the bloke we've got, and the system and the set up. If you want more info about who we went through, let me know. The bloke is based at Hove, but visits our area regularly (Nth East).
Commiserations on yesterday's event. I think it's garbage that that sort of thing happens to people. At least having a deterant moves people onto the next house (sad again, but hey, you gotta look after yourself).