A fire alarm system is a network of devices designed to detect and alert people to the presence of fire or smoke. These systems typically include smoke detectors, heat detectors, and manual pull stations, which work together to identify potential fire hazards. When a fire is detected, the system activates alarms to warn occupants and may also notify emergency services. Fire alarm systems can be either conventional or addressable. Conventional systems group detectors into zones, while addressable systems allow for individual identification of each device. Regular maintenance and testing are essential to ensure these systems function effectively in an emergency.