Active fire protection (AFP) is an integral part of fire protection. AFP is characterized by items and/or systems, which require a certain amount of motion and response in order to work, contrary to passive fire protection.
Sprinkler head. Heat causes the liquid in the bulb to expand, burst the glass and create an opening through which the water is released to control the fire.
A common, residential smoke detector sounds an alarm when smoke is detected.
Passive fire protection (PFP) is components or systems of a building or structure that slows or impedes the spread of the effects of fire or smoke without system activation, and usually without movement. Examples of passive systems include floor-ceilings and roofs, fire doors, windows, and wall assemblies, fire-resistant coatings, and other fire and smoke control assemblies. Passive fire protection systems can include active components such as fire dampers.
Fire-resistance rated wall assembly with fire door, cable tray penetration and intumescent cable coating
This I beam has a fireproofing material sprayed onto it as a form of passive fire protection.