Sometimes I get baffled (well ok, quite often...). This morning at 7am (I was working from home so was gonna sleep until 8:30!) the burglar alarm went off (first time in this new house). I went down and turned it off and it gave me a message saying that a sensor in the outbuilding had failed to communicate. Now, considering that I have not armed the alarm so far - what a crappy system where you have it unarmed, but if a sensor fails, the alarm goes off! I cannot fathom how this could have been designed in this way! The only reason why this house has a boss alarm is because the previous owner ran a business from here and had to have a high-quality alarm system for insurance purposes. It's a ridiculous system, but I am at a loss as to why it would go off on a fault when you have not armed it. Bearing in mind that when I had broadband installed, it emitted a quieter beep to tell me the phone line communications were interrupted. Seriously - how could they design a system to go off when you are trying not to use it!!!!