An automatic Fire Detection or Alarm system is designed to detect the unwanted presence of fire by monitoring environmental changes associated with combustion. In general, a fire alarm system is either classified as automatic, manually activated, or both. Automatic fire alarm systems can be used to notify people to evacuate in the event of a fire or other emergency and these systems are usually integrated into the main alarm system.
Fire suppression systems are used in conjunction with flame, and or smoke detectors, and fire alarm systems to improve and increase public safety. Suppression systems are governed by the codes under the NFPA 17A (National Fire Protection Association) handbook.