Fire detection is a three-step process.
The first thing to look for is the first signs of a fire, such as smoke, heat or flames. Fire safety systems with their optical smoke and heat detectors detect smoke and temperature increases and immediately trigger the second stage: the fire alarm. The information is instantly transmitted and processed by the Fire Safety Control Panel. The sound signal emitted allows to alert immediately the people present.
Finally, the last step consists in making them safe thanks to the emergency exits and protecting the premises with, for example, smoke removal actions.