I'm having a bit of bother with my house alarm, it's started to go off for no apparent reason, it only does it during the night, never through the day, and not every night, and when it does go off, it goes off at 01.06hrs, then at 04.06hrs, always the same times and always zone 1, which is the front door entry zone.
It started just after Christmas, and does it periodically, it hasn't done it for two weeks, then the last two nights it's done it again. I've checked all the timers etc in the house to see if anything coincides with the times, but nothing does.
I've stripped and cleaned the