We have an infinite prime system which is approx 15 months old. We have had numerous false alarms (normally in the middle of the night) the most recent of which caused us to disconnect the main panel from the mains and remove the back up battery. Therefore rendering the system dead - or so we thought! For the last 2 nights at "silly o'clock" the alarm has sounded for less than a minute then stopped. There is no obvious reason or pattern to it first night was just after midnight the second night was approx 4 am. Is there anyway to stop it doing this, preferably without climbing up the front of the house and removing the box? As I am sure our neighbours are getting mighty pe**ed off with us. I as guessing it has an internal battery back up or something, can anyone give any indication of how long this lasts before it dies completely??