How does a smoke alarm work?
A smoke alarm monitors the air for smoke, and the invisible
by combustion. It sounds an alarm when
it detects them.
How are smoke alarms powered?
Usually smoke alarms are fitted with a 9 volt battery. This
is provided with the
smoke alarm you purchase. You may also
purchase a smoke alarm that is 110v powered as well as a
dual powered unit that has a battery backup to the 110v power.
Where can I purchase a smoke alarm?
Smoke alarms can be purchased at hardware stores, supermarkets
and from electrical appliance retailers. The Zion Fire /
Rescue department will be happy
to assist you in determining
the proper type and number of alarms to purchase.
What does a smoke alarm cost to buy?
Generally, a smoke alarm will cost between $10.00 to $25.00.
As long as they
have the UL or FM seal of approval they will
be more than suitable for installation
in residential properties.
Many smoke alarms come with a 5 year warranty.
How should smoke alarms be mounted?
Smoke rises, rilling the highest area of a house first.
Therefore, smoke alarms
work best when mounted on the ceiling
or high on the wall.
How many smoke alarms do I need?
At least one for each floor of your house, including the
What rooms should the smoke alarms go in?
The sleeping areas should have a single alarm in the hallway.
Additional alarms should be place in the living areas and
in the bedrooms. Multi-story homes should have at least one
alarm on each level. Do not put smoke alarms in the kitchen,
bathroom or garage unless the alarms is specifically designed
for such use.
The smoke, steam and fumes which occur in these
rooms will set the alarm off
all the time.
What maintenance is needed for smoke alarms?
Smoke alarms are fitted with a test button to check the
unit for operation. When the button is pressed for several
seconds, the alarm should sound. This test should be done
once each month to assure proper operation. Battery powered
alarms should have the batteries changed twice a year. A
good time to remember is in the spring when you move your
clock ahead and in the fall when you move you clock back.
What should I do if the smoke alarm sounds?
The value of an alarm is early warning of a fire. Those
few minutes are vital to get out of the house safely. By
having an exit drill in the home, planned before an emergency, you and your family will know what to do if a fire situation
If you have any further questions or concerns
about smoke alarms, you can
contact the Zion Fire/Rescue
Department by calling (847) 746-4036.