Addressable Smoke Detactors
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The wireless smoke detectors or wireless smoke alarm systems are programmable between any number of zones from 1 to 999. The detectors are equipped with an in-built hooter and test button. So when ever detector becomes activated through smoke it sends radio waves to the panel. Panel display the same zone in which it has been programmed. Programmed zone can be changed to another zone if required. There is also an inbuilt hooter in the detectors as well as radio emitter. Addressable system gives each detector an individual number, or address. Addressable systems allow the exact location of an alarm to be plotted on the FACP. In certain systems, a graphical representation of the building is provided on the screeen of the FACP which shows the locations of all of the detectors in the building, while in others the address and location of the detector or detectors in alarm are simply indicated

Conventional Smoke Detactors

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The word "conventional" is slang used to distinguish the method used to communicate with the control unit in newer addressable systems. So called “conventional detectors” are smoke detectors used in older interconnected systems and resemble electrical switches in their information capacity. These detectors are connected in parallel to the signaling path or (initiating device circuit) so that the current flow is monitored to indicate a closure of the circuit path by any connected detector when smoke or other similar environmental stimulus sufficiently influences any detector. The resulting increase in current flow is interpreted and processed by the control unit as a confirmation of the presence of smoke and a fire alarm signal is generated. In a conventional system, smoke detectors are typically wired together in each zone and a single fire alarm control panel usually monitors a number of zones which can be arranged to correspond to different areas of a building. In the event of a fire, the control panel is able to identify which zone or zones contain the detector or detectors in alarm, but can not identify which individual detector or detectors are in a state of alarm