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A minor spark can set off a deadly fire where the resultant damage is not only in terms of property but also emotional.

An alarm going off in time could surely be help in at least dousing the flames before they engulf a dwelling and minimise the loss if not avoid it.

Fire alarms come in two variants -- conventional and addressable. Both these solutions work on basis of detecting heat and smoke and go off only when both of them are above a certain level.

For places where heat is normally higher compared to other rooms, heat detectors are a preferred option as one would not want false alarms raising unnecessary panic.

Fire alarms are placed according to ones requirements and also the availability of space is considered.

All the fire alarms, both addressable and conventional are fixed to a control panel or a call point.

Once a fire or smoke is detected and is sensed by the equipment, signals are sent to the call point where an alarm goes off. In some cases, the control panel also pinpoints the origin of smoke or fire, thereby saving time in extinguishing fire.

Moreover, in homes that have a false ceiling, two fire detectors are installed--one on the false ceiling and one above it. So, if a spark breaks into a minor fire, one of the detectors will raise an alarm.

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