A fire alarm system is a building system designed to detect and alert occupants and emergency forces of the presence of smoke, fire, carbon monoxide, or other fire-related emergencies. Fire alarm systems are required in most commercial buildings.
A fire detection system is an electronic system made up of different types of devices and whose objective is to preventively detect a fire in its most incipient phase, and to issue alarm signals to the user personnel of the installation to try to prevent it from spreading.