We are at our 'holiday' home. It was our previous house and we haven't been able to sell it yet. We have an alarm. For the past few nights the blasted alarm has been going off wrt a certain door. When we cancel, it goes off shortly again (can be numerous times in a row). There isn't a pattern, but it is going off repeatedly since 1.20am. Just goes off at night. Rang alarm co. and some guy said nothing they can do. Engineer has to come. We rang the maintenance number on friday to arrange an engineer and woman said they would need to do diagnostics over the phone before she'd arrange an engineer. We were away from home so couldn't do diagnostics and will have to ring her again tomorrow.
The way a fault is programmed to go off in the middle of the night is a design for torture. Feel like ringing them everytime the alarm goes off so they can share my experience. I can't even take a hammer to it because it is wired to the electricity mains.