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An Initiating Device Circuit (known as a Signalling Line Circuit (SLC) in addressable systems) connected to multiple devices within the same "zone" of protection, effectively provides 3 distinct states of information about the zone to the panel: Normal, Trouble, or Alarm. The state of each initiating device circuit within a zone displays at the ...
Many modern fire alarm pull stations are single-action and only require the user to pull down a handle to sound the alarm. Other fire alarm pull stations are dual-action, and as such require the user to perform a second task before pulling down, such as lifting or pushing in a panel on the station or breaking a glass panel with an attached hammer.
Initiating devices used to activate a fire alarm system are either manually or automatically actuated devices. Manually actuated devices, also known as fire alarm boxes , manual pull stations, or simply pull stations, break glass stations, and (in Europe) call points, are installed to be readily located (usually near the exits of a floor or ...
The EN 54 series of standards covers the following topics and product groups related to fire detection and fire alarm systems: [6] [7] Introduction: the introduction to the series of standards contains a diagram of a fire alarm system as well as numerous definitions of terms that are used in the other parts of the series of standards.
The NFPA 72 "covers the application, installation, location, performance, inspection, testing, and maintenance of fire alarm systems, supervising station alarm systems, public emergency alarm reporting systems, fire warning equipment and emergency communications systems (ECS), and their components."
Control and indicating equipment is equipment for receiving, processing, controlling, indicating and initiating the onward transmission of information as used in fire alarm systems. The fire detection and fire alarm system subcommittee of ISO/TC 21, Equipment for Fire Protection and Fire Fighting, had oversight for development of five standards ...
European Siren for fire detection system. A fire alarm notification appliance is an active fire protection component of a fire alarm system.A notification appliance may use audible, visible, or other stimuli to alert the occupants of a fire or other emergency condition requiring action.
An alarm device that signals that a firefighter is in trouble. It can be activated manually by the firefighter, or activates automatically if the firefighter stops moving. May be integral to SCBA or separately activated. Also known as a PASS device (personal alert safety system) or PDA (personal distress alarm). Aerial fire apparatus