- Lack of maintenance covers both alarm system maintenance, as well as physical site maintenance.

- If you move into a new house and after six months to a year you notice that your doors start to stick, or your windows no longer open and shut as they should, it is probably due to settlement that has occurred.
- This should be repaired immediately, as it may cause false alarms.
- If windows and doors are not tight in their frames, the contacts may become separated or out of alignment, which can signal an alarm activation.