Hello. The Pyronix Enforcer alarm on my house went off this week and it showed a contact on one of my rear external doors had triggered it. Luckily it was not a break in as the door was untouched (confirmed by cctv). The panel indicated the door contact was triggered and so I reset it. No faults were showing on the system. A few days later, the same thing happened and then again during the night when I had the alarm set in night mode. It is the same door contact triggering the alarm each time. I carried out a walk test on all PIR's and door contacts and all completed fine with no warnings. There are no 'low battery' warnings either although the same battery has been installed since October 2018 (32 months). Would anyone have any ideas as to why this door contact seems to be activating the alarm after several hours of being set? I will replace the battery but wondered if there is possibly another reason? Thank you.