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LIMITATIONS OF SMOKE ALARMS (CONTINUED)...
Smoke Alarms cannot work without power. Battery operated units cannot work
if the batteries are missing, disconnected or dead, if the wrong type of batteries are
used, or if the batteries are not installed correctly. AC units cannot work if the AC
power is cut off for any reason (open fuse or circuit breaker, failure along a power
line or at a power station, electrical fire that burns the electrical wires, etc.). If you are
concerned about the limitations of battery or AC power, install both types of units.
Smoke Alarms cannot detect fires if the smoke does not reach them. Smoke
from fires in chimneys or walls, on roofs, or on the other side of closed doors
may not reach the sensing chamber and set off the alarm. That is why one unit
should be installed inside each bedroom or sleeping area—especially if bedroom
or sleeping area doors are closed at night—and in the hallway between them.
Smoke Alarms may not detect fire on another floor or area of the home. For example,
a stand-alone unit on the second floor may not detect smoke from a basement fire
until the fire spreads. This may not give you enough time to escape safely. That is why
recommended minimum protection is at least one unit in every sleeping area, and every
bedroom on every level of your home. Even with a unit on every floor, stand-alone units
may not provide as much protection as interconnected units, especially if the fire starts
in a remote area. Some safety experts recommend installing interconnected AC powered
units with battery back-up (see “About Smoke Alarms”) or professional fire detection
systems, so if one unit senses smoke, all units alarm. Interconnected units may provide
earlier warning than stand-alone units since all units alarm when one detects smoke.
Smoke Alarms may not be heard. Though the alarm horn in this unit meets or exceeds
current standards, it may not be heard if: 1) the unit is located outside a closed or
partially closed door, 2) residents recently consumed alcohol or drugs, 3) the alarm is
drowned out by noise from stereo, TV, traffic, air conditioner or other appliances, 4)
residents are hearing impaired or sound sleepers. Special purpose units, like those
with visual and audible alarms, should be installed for hearing impaired residents.
Smoke Alarms may not have time to alarm before the fire itself causes damage,
injury, or death, since smoke from some fires may not reach the unit immediately.
Examples of this include persons smoking in bed, children playing with
matches, or fires caused by violent explosions resulting from escaping gas.
Smoke Alarms are not foolproof. Like any electronic device, Smoke Alarms
are made of components that can wear out or fail at any time. You must test the
unit weekly to ensure your continued protection. Smoke Alarms cannot prevent
or extinguish fires. They are not a substitute for property or life insurance.
Smoke Alarms have a limited life. The unit should be replaced immediately if it is
not operating properly. You should always replace a Smoke Alarm after 10 years from
date of purchase. Write the purchase date on the space provided on back of unit.