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 and are often installed in homes as well. Fire alarm systems typically consist of the following components: Detectors: These devices detect the presence of fire or smoke and send a signal to the fire alarm control panel (FACP).
FACP: This panel receives signals from the detectors and sends out an alarm to alert occupants and emergency personnel.
Notification devices: These devices sound an alarm to alert occupants and emergency personnel. They may include bells, horns, sirens, and strobe lights.
Manual fire alarm activation devices: These devices allow occupants to manually activate the fire alarm system. They may include pull stations and break glass alarms.
Fire alarm systems can be either conventional or addressable. Conventional systems use hardwired wiring to connect the detectors and notification devices to the FACP. Addressable systems use digital signals to communicate between the detectors and the FACP. This allows for more precise location of the fire and more detailed information to be sent to the FACP.

Fire alarm systems are an essential part of fire safety in buildings and structures. They help to protect lives and property by alerting occupants and emergency personnel to the presence of fire early on. Importance of fire alarm systems: Early warning: Fire alarm systems provide early warning of a fire, giving occupants time to evacuate safely.
Life safety: Fire alarm systems can help to save lives by alerting occupants to a fire and directing them to safety.
Property protection: Fire alarm systems can help to protect property by detecting fires early and notifying the fire department.
Business continuity: Fire alarm systems can help businesses to minimize downtime and maintain operations by preventing fires from disrupting normal activities.
Regulatory compliance: Fire alarm systems are often mandated by building codes and fire safety regulations to ensure public safety.