A fire alarm system is a safety device designed to detect and alert people to the presence of fire or smoke. It typically includes components such as smoke detectors, heat detectors, and alarm sounders. When smoke or heat is detected, the system activates an alarm to warn occupants, allowing them to evacuate safely. These systems can be standalone units or part of a larger building management system. They may also be connected to emergency services, ensuring a quick response to potential fires. Regular maintenance and testing are essential to ensure the system functions effectively in an emergency.