Which alarm method activates devices only on the floor of alarm plus adjacent floors?

The selective alarm method is designed to activate alarm devices specifically on the floor where an incident occurs and on adjacent floors. This targeted approach helps contain the alarm response to the immediate area, reducing the chances of unnecessary panic and allowing for a more controlled evacuation process.

In situations where a fire or emergency is detected, the selective alarm provides the benefit of localizing the alarm to only those occupants who are at immediate risk, while still ensuring that adjacent floors are alerted for safety considerations and potential evacuation if necessary. This method is particularly valuable in large buildings, improving emergency response effectiveness and minimizing disruption.

In contrast, other alarm methods may activate broader responses without the specificity of only targeting floors directly affected by the emergency.