Editing Smoke detector (section)

=== Addressable ===
[[File:Truealarmdetector.JPG|thumb|right|An addressable Simplex TrueAlarm smoke detector]]
An addressable system gives each detector an individual number or address.<ref name="ssspl" /> Addressable systems allow the exact location of an alarm to be plotted on the FACP while allowing several detectors to be connected to the same zone.<ref name="ssspl" /> In certain systems, a graphical representation of the building is provided on the screen of the FACP which shows the locations of all of the detectors in the building,<ref name="ssspl" /> while in others the address and location of the detector or detectors in alarm are simply indicated.<ref name="ssspl" />

Addressable systems are usually more expensive than conventional non-addressable systems,<ref>{{cite web |title=Addressable Equipment |url=http://www.wi-ltd.com/fire/Fire_Detection_Systems/Addressable_Systems/Addressable_Equipment |url-status=live |archive-url=https://web.archive.org/web/20091124071304/http://www.wi-ltd.com/fire/Fire_Detection_Systems/Addressable_Systems/Addressable_Equipment |archive-date=2009-11-24 |access-date=2010-06-09 |publisher=Westminster International Limited}}</ref> and offer extra options, including a custom level of sensitivity (sometimes called Day/Night mode) which can determine the amount of smoke in a given area and contamination detection from the FACP that allows determination of a wide range of faults in detection capabilities of smoke detectors.<ref name="ssspl" /> Detectors become contaminated usually as a result of the build-up of atmospheric particulates in the detectors being circulated by the heating and air-conditioning systems in buildings. Other causes include carpentry, sanding, painting, and smoke in the event of a fire.<ref>{{cite web|url=http://firewize.com/contaminated-smoke-detectors|title=Contaminated (dirty) Smoke Detectors|date=2012|website=Firewize.com|publisher=Firewize Holdings Pty|access-date=6 June 2014|url-status=live|archive-url=https://web.archive.org/web/20140729162623/http://firewize.com/contaminated-smoke-detectors|archive-date=29 July 2014}}</ref> Panels can also be interconnected to monitor a large number of detectors in multiple buildings.<ref name="ssspl" /> This is most commonly used in hospitals, universities, resorts and other large centres or institutions.<ref name="ssspl" />