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An addressable Simplex TrueAlarm smoke detector. An addressable system gives each detector an individual number or address. [56] 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. [56]
An aspirating smoke detector (ASD) is a system used in active fire protection, consisting of a central detection unit which draws air through a network of pipes to detect smoke. [1] The sampling chamber is based on a nephelometer that detects the presence of smoke particles suspended in air by detecting the light scattered by them in the chamber.
The prealarm LED is lit when one device has tripped. The prealarm LED may also be used if an addressable smoke detector registers low levels of smoke in the detection chamber, but not enough to trigger a full alarm. [3] Depending on the system's layout, the Notification Appliance Circuit (NAC) may or may not activate for prealarm conditions.
In the 2000’s, System Sensor introduced the i3 line of smoke detectors, which came in 2 and 4 wire models. These devices have a feature which they will poll with the fire alarm panel when the sensor is dirty, causing a trouble condition on the panel.
Replace smoke detectors at least every 10 years: Don't place your life in the hands of an outdated smoke alarm. For the most part, you can plan on replacing your smoke detector at least every 10 ...
Fire alarm systems are required in most commercial buildings. They may include smoke detectors, heat detectors, and manual fire alarm activation devices (pull stations). All components of a fire alarm system are connected to a fire alarm control panel. Fire alarm control panels are usually found in an electrical or panel room.
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