The easiest way to avoid false alarms is taking the time to close all doors and windows (including internal doors). This keeps drafts and circulating air to a minimum. Try to keep detectors free from dust and cobwebs which will prevent spiders from making a home inside or around them.

Birthday, celebratory and Christmas decorations are another common cause of false alarms. The movement alone is OK, couple that with warm air and drafts can lead to false alarms.