AZ Fire Alarm key terms

The specific published version of a model fire code or standard that a jurisdiction has formally enacted into law, which governs all work within that jurisdiction's boundaries.

A consensus standard such as NFPA 72 or the International Fire Code, developed by a technical committee and offered for adoption by states and local governments rather than written by them.

The organization, office, or individual responsible for approving equipment, installations, and procedures, and for interpreting and enforcing the code in a given area.

Formal recognition by a nationally recognized testing laboratory that a product meets designated standards and is suitable for a specific intended use.

Bearing a mark, symbol, or tag of a testing laboratory indicating the equipment has been evaluated and found compliant with the applicable product standard.

Accepted by the authority having jurisdiction as meeting code requirements, which may include listing, field evaluation, or other evidence of suitability.

The pre-construction examination of submitted drawings, calculations, and specifications by the enforcing agency to verify code compliance before installation begins.

A device that senses visible or invisible combustion particles and sends a signal to the fire alarm control unit; it does not itself sound an alarm.

A detector whose sensing element responds to conditions at a single compact location, as opposed to sampling air from a wide area through piping.

A system that draws air from a protected area through a network of pipes to a remotely located detector for analysis, often used where spot detectors are impractical.

The wiring path connecting automatic detectors and manual stations to the control unit, monitored for abnormal conditions such as opens, shorts, or ground faults.

Any component such as a detector, manual pull station, or waterflow switch that transmits a signal to the control unit when it operates.

A manually operated device that, when actuated by a person, sends an alarm signal to the control unit and is typically installed along exit paths.

A field component that reports its own unique identifier to the control unit, allowing the panel to display the exact location of the activated device.

A grouping of non-addressable initiating devices on shared wiring, where the panel indicates only the zone rather than the individual device that operated.

An audible, visible, or tactile device such as a horn, strobe, chime, or speaker that alerts occupants of an alarm condition.

The power and signal pathway from the control unit to notification appliances, which must be monitored and designed within the panel's rated output capacity.

An alarm sound produced by a notification appliance that must meet minimum sound pressure levels above ambient noise in the protected space.

A flashing light output from a strobe appliance intended to warn occupants who cannot hear audible signals or who are in high-noise areas.

A measure of luminous intensity for a strobe appliance, selected according to room size and mounting height to achieve the required illumination.

Coordination of flash timing among visible appliances in the same field of view so that simultaneous or irregular flashing does not create a seizure hazard.

The central panel that receives signals from initiating devices, processes them according to its programming, and activates notification appliances and auxiliary functions.

A control unit architecture in which each field device has a unique address, enabling precise annunciation and device-level troubleshooting.

A signaling circuit in which a single open or ground fault prevents normal operation but does not impair the ability of other circuits to function.

A signaling circuit arranged so that an open fault in the wiring does not prevent the circuit from performing its intended function, typically through a return path.

The reduction in voltage along a circuit caused by conductor resistance, calculated to confirm that appliances at the far end still receive their rated operating voltage.

The battery or other backup source that powers the fire alarm system when normal building power fails, sized to carry the load for a specified duration.

The normal commercial electrical source feeding the fire alarm control unit, typically a dedicated branch circuit that must be marked and protected from accidental disconnection.

The design requirement that critical circuit pathways remain functional during a fire, achieved through separation, enclosure, or circuit redundancy.

An enclosed channel such as conduit or tubing that carries and physically protects fire alarm conductors along a building pathway.

Cable with jacket and insulation rated for installation in air-handling spaces, limiting smoke and flame spread where the cable is exposed to airflow.

The documented functional test performed after installation to demonstrate to the authority having jurisdiction that the system operates as designed before it is placed in service.

A form documenting the installed system configuration, device locations, and test results, which is provided to the owner and retained for future reference.

A visual and physical examination of system components to verify correct installation, condition, and accessibility without necessarily operating the equipment.

Operation of system components to confirm they perform their intended function, conducted at intervals established by the adopted code and recorded for the owner.

The state-issued authorization required for a business or individual to perform fire alarm contracting work, obtained through application and demonstrated qualification.

The individual whose experience, training, or examination qualifies a licensed contracting business to perform fire alarm work in the state.

Written authorization from the enforcing agency allowing specific work to proceed, typically issued after plan review and payment of required fees.