An automatic fire system can detect and contain or extinguish a fire without human intervention. It can include an automatic fire alarm system and an automatic fire suppression system: Automatic fire alarm systemA receiver detects when a fire triggers a sensor, and then alerts the building occupants with alarm bells or voice alarms. Automatic fire suppression systemA detection system detects radiant heat from a fire, activates the system, and delivers extinguishing agents to the fire. Examples of automatic fire suppression systems include fire sprinkler systems, gaseous fire suppression, and condensed aerosol fire suppression.