A fire alarm system consists of several devices that work together to detect and warn people of smoke, fire, carbon monoxide or other emergencies by means of visual and audible devices. A fire alarm system is essential in any building, especially in large buildings where some substances can cause ignition. Fire alarm systems can be installed in offices, factories, and public spaces. They are part of our daily routine, but they are often neglected until an emergency arises when they can save our lives.

Whatever the detection strategy, if an alarm is triggered, audible alarms act to warn others in the building that a fire may have broken out and they should evacuate. The alarm system may include a remote alarm which could then alert firefighters via a central/main station. A fire alarm system contains various devices that work together to identify and warn people by visual and audible means when smoke, fire, carbon monoxide or various crisis situations are likely to cause a disaster. 

These warnings can be activated naturally from smoke and heat detectors within the building or they can be activated through a manual alarm system using a manual call point and pull station. Alarms may be either mechanical bells or audible signals. They may be a flashing light giving a warning signal followed by a voice departure message warning occupants not to use the lift for evacuation. Alarms can be set to specific frequencies and different tones, including low, medium, and high, depending on the size of the building. The ‘central part’ of the fire identifier is the fire alarm control panel. It is the central point at which the detector signals communicate and provide status information to the occupant.