Smoke
Detectors
When present, humans can be excellent fire detectors.
The healthy person is able to sense multiple aspects of a fire including
the heat, flames, smoke, and odors. For this reason, most fire alarm
systems are designed with one or more manual alarm activation devices
to be used by the person who discovers a fire. Unfortunately, a person
can also be an unreliable detection method since they may not be present
when a fire starts, may not raise an alarm in an effective manner,
or may not be in perfect heath to recognize fire signatures. It is
for this reason that a variety of automatic fire detectors have been
developed. Automatic detectors are meant to imitate one or more of
the human senses of touch, smell or sight. One of the most important
fire safety devices for the home is the smoke alarm, smoke detectors
replicate the sense of smell. The properly selected and installed
automatic detector can be a highly reliable fire sensor.

What are smoke alarms ?
Smoke alarms are self contained devices that incorporate a means
of detecting a fire (smoke detector) and giving a warning (alarm).
They are about the size of a hand and are normally fitted to the
ceiling. They can detect fires in their early stages and give you
those precious minutes to enable you and your family to leave your
house in safety.
How many should I fit in my home ?
The number of smoke alarms to fit in your home depends on your particular
circumstances. Fires can start anywhere, so the more that are fitted,
the higher the level of protection. For maximum protection an alarm
should be fitted in every room (except kitchen, bathroom and garage).
For minimum protection the number to be fitted will depend on the
type of home you live in. If your home has more than one floor,
at least one alarm should be fitted on each level. Do not fit an
alarm in the kitchen or bathroom, as cooking fumes or steam may
trigger the alarm. Similarly, do not fit an alarm in a garage where
exhaust fumes are likely to set it off. Cigarette smoke will not
normally set off an alarm.
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