Anytime any of the devices detects a change, an alarm can occur. In some instances, the change could be caused by an environmental change or a physical change. A false alarm by a motion detector can be caused by an environmental change or a build up of dust on the device. A false alarm by a door or window contact may be caused by the door not closing properly, or the door magnet could be weak and need to be serviced.
Published: Feb 27, 2019Updated: Feb 28, 2019