Which of the following is NOT a cause of a nuisance alarm?

Natural causes like smoke from wildfires can trigger smoke alarms but are not classified as nuisance alarms. Nuisance alarms typically arise from issues linked to the alarm system itself, particularly those that could have been prevented through proper installation or maintenance.

When smoke from wildfires enters a building, it is a genuine signal for concern regarding potential fire hazards, not a false alarm. The purpose of smoke detectors is to alert occupants to fire, and in the case of smoke from external sources like wildfires, this is an appropriate response by the detector. Other causes of nuisance alarms, such as mechanical failure, improper installation, or lack of maintenance, tend to lead to unnecessary alerts without actual danger, making them distinctly different from legitimate warnings triggered by external factors like wildfires.