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| Oh no, someone´s house is on fire. |
A smoke detector or smoke alarm is a device that
detects smoke and issues an alarm to alert nearby
people that there is a potential fire. A household
smoke detector will typically be mounted in a disk
shaped plastic enclosure about 150mm in diameter
and 25mm thick, but the shape can vary by manufacturer.
Because smoke rises, most detectors are mounted
on the ceiling or on a wall near the ceiling. To
avoid the nuisance of false alarms, most smoke detectors
are mounted away from kitchens. To increase the
chances of waking sleeping occupants, most homes
have at least one smoke detector near any bedrooms;
ideally in a hallway as well as in the bedroom itself... |
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