How Your Fire Recall Elevator Actually Works
Most people don't really think about their fire recall elevator until the alarm starts blaring and the buttons suddenly stop responding to their touch. It's one of those behind-the-scenes safety features that usually just sits there being invisible, but when smoke hits a sensor, it becomes the most important machine in the building. Basically, it's a system designed to keep you from accidentally walking into a smoke-filled hallway or getting trapped in a shaft during an emergency. ...