Kidde P12040CA User manual

Manual P/N 820-1193 Rev D 4/12
ATTENTION: Please take a few minutes to thoroughly read
this user’s guide which should be saved for future reference
and passed on to any subsequent owner.
Smoke Alarm
User’s Guide
Models: i12020ACA i12040ACA P12040CA
SINGLE AND/OR MULTIPLE
STATION SMOKE ALARM
120 V AC Direct Wire
NOTE: The model i12040ACA smoke alarm has a low battery HUSH feature.
If the alarm is sounding a low battery warning chirp, you can silence
this chirp for approximately 13 hours by pressing the Test/Hush button.

1. Introduction
Models i12020ACA, i12040ACA and P12040CA
Thank you for purchasing this smoke alarm. It is an important part of
your family’s home safety plan. You can trust this product to provide
the highest quality safety protection. We know you expect nothing less
when the lives of your family are at stake.
Please take a few minutes to thoroughly read this alarm manual, and
save it for future reference. Teach children how to respond to the
alarms, and that they should never play with the unit.
If you have any questions about the operation or installation of your
alarm, please call our toll free Consumer Hotline at 1-800-880-6788.
Image 1C will help you determine the correct location of safety products
that will help make your home a safer place.
IMPORTANT: Read all instructions before installation and keep
this manual near the alarm for future reference.
Do not try to repair the smoke alarm yourself. Refer to the
instructions in Warranty section for service.
Contents of This User’s Guide
1. Introduction
2. Installation
3. Operation
4. Maintenance
5. Fire Safety
6. Warranty
Kidde Canada Inc., P.O. Box 40, Apsley, ON K0L 1A0
Consumer Hotline: [phone]
www.kiddecanada.com
Made in China. Patents Pending

1. Introduction
2. Installation
3. Operation
4. Maintenance
5. Fire Safety
6. Warranty
2. Installation
This unit is suitable as a Single Station and/or Multiple Station alarm
(interconnects with up to 24 devices), and has a five-year limited
warranty.
IMPORTANT: Kidde alarms and accessories CAN ONLY BE
interconnected with other Kidde alarms and accessories as well
as specified brands and models of interconnect compatible
alarms. Connection of Kidde products to a non-specified
manufacturer’s interconnect system, or connection with non-
specified equipment from another manufacturer into an existing
Kidde system could result in nuisance alarming, failure to alarm,
or damage to one or all of the devices in the interconnect
system. Refer to the User’s Guide supplied with each Kidde
product for interconnect compatible models, brands, and devices.
This alarm is interconnect compatible with the following alarms and
accessories:
Smoke alarms: 1235CA, 1275CA, 1276CA, i12020CA, i12020ACA,
i12040CA, i12040ACA, i12060CA, i12060ACA, PE120CA, P12040CA,
Pi2000CA, Pi2010CA, KN-SMFM-I-CA
Smoke/CO alarms: KN-COSM-IBCA, KN-COSM-ICA, KN-COPE-ICA
CO alarms: KN-COB-ICB-CA, KN-COB-IC-CA, KN-COP-IC-CA
Relay modules: SM120X, CO120X
Strobe Light: SL177i
Refer to respective manuals for specific application information.
Models i12020ACA and i12040ACA are designed to detect products of
combustion using the ionization technique. They contain 0.9 microcurie
of Americium 241, a radioactive material. Distributed under U.S. NRC
License No. 32-23858-01E. Manufactured in compliance with U.S.
NRC safety criteria in 10 CFR 32.27. The purchaser is exempt from any
regulatory requirements. Do not try to repair the smoke alarm yourself.
Refer to the instructions in Warranty section for service.
WARNING: Removal of the smoke alarm battery and
disconnecting or loss of AC power will render the smoke alarm
inoperative.
ELECTRICAL RATING: 120 V AC, 60 HZ, 80 mA maximum per alarm
(maximum 80 mA for originating unit with 24 devices interconnected).

2. Installation
Recommended Locations
• Locate the first alarm in the immediate area of the bedrooms.
Try to monitor the exit path, as the bedrooms are usually
farthest from the exit. If more than one sleeping area exists,
locate additional alarms in each sleeping area (Image 1A).
• Locate additional alarms to monitor any stairway as stairways act
like chimneys for smoke and heat.
• Locate at least one alarm on every floor level (Image 1B).
• Locate an alarm in every Sleeping Room.
• Locate an alarm in every room where electrical appliances are
operated (i.e. portable heaters or humidifiers).
• Locate an alarm in every room where someone sleeps with the
door closed. The closed door may prevent an alarm not located
in that room from waking the sleeper.
• Smoke, heat, and combustion products rise to the ceiling and
spread horizontally. Mounting the smoke alarm on the ceiling in
the center of the room places it closest to all points in the room.
Ceiling mounting is preferred in ordinary residential construction.
• When mounting an alarm on the ceiling, locate it at a minimum
of 10 cm (4”) from the side wall (Image 2A).
• When mounting the alarm on the wall, use an inside wall with
the top edge of the alarm at a minimum of 10 cm (4”) and a
maximum of 30.5 cm (12”) below the ceiling (Image 2A).
• Put smoke alarms at both ends of a bedroom hallway or large
room if the hallway or room is more than 9.1 m (30’) long.
• For mobile home installation, select locations carefully to avoid
thermal barriers that may form at the ceiling. For more details,
see Mobile Homes.

2. Installation
• Install smoke alarms on sloped, peaked or cathedral ceilings
following the mounting guidelines outlined in image 2B and 2C.
Smoke alarms in rooms with ceiling slopes greater than 0.3 m in
2.4 m (1 foot in 8 feet) horizontally shall be located on the high
side of the room (Image 2B and 2C).
DINING
ROOM
LIVING
ROOM
Required Smoke Alarms
Ionization Type Smoke Alarm with
Hush® Control or Photoelectric Type
Smoke Alarms for Additional Pr
otection
KITCHEN BEDROOM
BEDROOM
BEDROOM
LIVING
ROOM KITCHEN
BEDROOMBEDROOM HALL
BASEMENT
SINGLE FLOOR PLAN MULTIPLE FLOOR PLAN
IMAGE 1A IMAGE 1B
BEDROOM
FAMILY ROOM
WORKSHOPBASEMENT
KITCHEN
HALL
GARAGE
MASTER
BEDROOM
FIRE
EXTINGUISHERS
SMOKE
ALARMS
CARBON
MONOXIDE
ALARMS
TALKING
SMOKE/CO
ALARM
TOTAL HOME PROTECTION
IMAGE 1C

2. Installation
Install Smoke Alarms on tray-shaped ceilings (coffered ceilings) on the
highest portion of the ceiling or on the sloped portion of the ceiling
within 30.5 cm (12”) vertically down from the highest point (Image 2D).
Locations to Avoid
• Do not install within 0.9 m (3’) of the following: The door to a
kitchen, or a bathroom that contains a tub or shower, forced air
supply ducts used for heating or cooling, ceiling or whole house
ventilating fans, or other high air-flow areas.
• Do not place the alarm where drapes or other objects will block
the sensor. Smoke must be able to reach the sensor to accurately
detect conditions.
• Do not install in peaks of vaulted ceilings. In this area install as
shown in images 2B and 2C.
• Install at least 30.5 cm (12”) away from fluorescent lights as
electronic noise may cause nuisance alarms.
• Keep out of insect infested areas. Avoid excessively dusty, dirty or
greasy areas. Dust particles may cause nuisance alarms or failure
to alarm.
• Extreme temperatures may affect the sensitivity of the alarm.
Do not install in areas where the temperature is colder than
4.4°C (40°F) or hotter than 37.8°C (100°F), such as garages and
unfinished attics.
• Do not install in areas where the relative humidity (RH) is greater
than 85%. Very humid areas, with moisture or steam, can cause
nuisance alarms.
• Avoid placing ionization smoke alarms in kitchen areas. Normal
cooking may cause nuisance alarms. If a kitchen alarm is desired, it
should have an alarm silence feature or be a photoelectric type.
• Do not place in the garage. Particles of combustion are present
when you start your automobile.
• Smoke alarms are not to be used with detector guards unless the
combination (alarm and guard) has been evaluated and found
suitable for that purpose.

2. Installation
NOT IN
THIS AREA
ANYWHERE IN
THIS AREA
0.9 m (3’) 0.9 m (3’)
HORIZONTAL DISTANCE
FROM PEAK
NOT IN
THIS AREA
ANYWHERE IN
THIS AREA
0.9 m (3’)
MINIMUM
BEST
PLACEMENT
STAGNANT AIR
MINIMUM
10 cm (4”)
NEVER
HERE
ACCEPTABLE
PLACEMENT
30.5 cm (12”)
MAXIMUM
CEILING
10 cm (4”)
ANYWHERE IN
THIS AREA
30 cm (12”)
SIDE WALL
IMAGE 2A
IMAGE 2B
IMAGE 2C
IMAGE 2D

Mobile Homes
Modern mobile homes have been designed to be energy efficient. Install
smoke alarms as recommended in Recommended Locations and
Image 2A.
In older mobile homes that are not well insulated compared to present
standards, extreme heat or cold can be transferred from the outside
to the inside through poorly insulated walls and roof. This may create
a thermal barrier that can prevent the smoke from reaching an alarm
mounted on the ceiling. In such units, install the smoke alarm on an
inside wall with the top edge of the alarm at a minimum of 10 cm (4”)
and a maximum of 30.5 cm (12”) below the ceiling (Image 2A).
If you are not sure about the insulation in your mobile home, or if you
notice that the outer walls and ceiling are either hot or cold, install the
alarm on an inside wall. For minimum protection, install at least one
alarm close to the bedrooms. For additional protection, see Image 1A.
WARNING: Test your smoke alarm operation after R.V. or mobile
home vehicle has been in storage, before each trip and at least
once a week during use.
Wiring
CAUTION! Turn off the main power to the circuit before wiring
the alarm.
• This smoke alarm should be installed on a CSA listed or recognized
junction box. All connections should be made by a qualified
electrician and all wiring used shall be in accordance with articles
210 and 300.3(B) of the U.S. National Electrical Code ANSI/NFPA
70, NFPA 72 and/or any other codes having jurisdiction in your
area. The multiple station interconnect wiring must be run in the
same raceway or cable as the AC power wiring to the alarms.
In addition, the resistance of the interconnect wiring shall be a
maximum of 10 ohms.
• The appropriate power source is 120 Volt AC Single Phase
supplied from a non-switchable circuit which is not protected by a
ground fault interrupter.
• The alarm should not be operated on power derived from a
square wave, modified square wave or modified sine wave
inverter. These power sources produce high peak voltages that
will damage the alarm.
2. Installation

2. Installation
• For alarms that are used as single station, DO NOT CONNECT THE
RED WIRE TO ANYTHING. Leave the red wire insulating cap in
place to make certain that the red wire cannot contact any metal
parts or the electrical box.
• When alarms are interconnected, all interconnected units must be
powered from a single circuit.
• A maximum of 24 Kidde devices may be interconnected in a
multiple station arrangement. The interconnect system should not
exceed the NFPA interconnect limit of 12 smoke alarms and/or 18
alarms total (smoke, heat, carbon monoxide, etc.) With 18 alarms
interconnected, it is still possible to interconnect up to a total of 6
remote signaling devices and/or relay modules.
IMPORTANT: Kidde alarms and accessories CAN ONLY BE
interconnected with other Kidde alarms and accessories as well as
specified brands and models of interconnect compatible alarms.
Connection of Kidde products to a non-specified manufacturer’s
interconnect system, or connection with non-specified equipment
from another manufacturer into an existing Kidde system could
result in nuisance alarming, failure to alarm, or damage to one
or all of the devices in the interconnect system. Refer to the
User’s Guide supplied with each Kidde product for interconnect
compatible models, brands, and devices.
• When mixing models which have battery backup with models
without battery backup, be advised that the models without
battery backup will not respond during an AC power failure.
• For more information about compatible interconnect units and
their functionality in an interconnect system, visit our web site at:
www.kiddecanada.com
• The maximum wire run distance between the first and last unit in
an interconnected system is 305 m (1000’).
• Image 3 illustrates interconnection wiring. Improper connection will
result in damage to the alarm, failure to operate, or a shock hazard.
• Make certain alarms are wired to a continuous (non-switched)
power line. NOTE: Use standard CSA listed household wire (as
required by local codes) available at all electrical supply stores and
most hardware stores.

FUSE OR CIRCUIT BREAKER
WHITE
RED
BLACK
QUICK CONNECTOR
KIDDE
Relay Module
# SM120X
Optional Accessory
24
23
1
WHITE
RED
BLACK
WHITE
RED
BLACK
WHITE
RED
BLACK
Live Neutral
2. Installation
INTERCONNECT WIRING
IMAGE 3
WIRES ON ALARM HARNESS Black Connected to hot side of AC line. White Connected to neutral side of AC line. Red Connected to interconnect lines (red wires) of other units in a multiple station set-up.

2. Installation
IMAGE 4BIMAGE 4A
ROTATE TO MOUNT
OR TO REMOVE
IMAGE 4DIMAGE 4C
BATTERY
REMINDER TAB
TAMPER-RESIST
LOCKING PIN

2. Installation
Mounting
CAUTION: This unit is sealed. The cover is not removable!
• Pull the AC Quick-Connect wire harness through the centre hole
in the mounting plate and secure the plate, making sure that
the mounting screws are positioned in the small ends of the
keyholes before tightening (Image 4A).
• (For models i12040ACA and P121040CA) Press the battery
reminder tab down into the battery compartment while
inserting the battery (Image 4C).
CAUTION: If the battery reminder tab is not held down in the battery
compartment by the battery, the battery door will not close and the
unit will not attach to the mounting plate.
• Plug the AC Quick-Connect wire harness into the back of the
alarm (Image 5), making sure that the locks on the connector
snap into place. Push the excess wire back into the electrical box
through the hole in the center of the mounting plate.
• Alignment marks are provided on the edge of the mounting plate and
the alarm. After installing the mounting plate, place the alarm onto the
mounting plate, making sure the alignment marks are lined up. Twist
the alarm in the direction indicated by the “ON” arrow on the alarm
cover (Image 4B) until it locks in place.
IMAGE 5
ATTACHING THE AC QUICK-
CONNECT WIRE HARNESS

Battery Backup
Models i12040ACA and P12040CA with battery backup will not
function without a properly installed battery. They are equipped with a
battery lockout feature which prevents the battery door from closing if a
battery is not installed correctly. See Maintenance section for additional
information concerning battery installation.
Testing
• To ensure proper operation of models i12040ACA and P12040CA
in the battery backup mode, press the Test button, (without the
AC power connected) for at least 5 seconds or until the alarm
sounds.
CAUTION: Due to the loudness (85 decibels) of the alarm, always stand an
arms-length away from the unit when testing.
• Turn on the AC power. The green LED power indicator should be
lit when the alarm is operating from AC power.
• For all models: Confirm unit operation by pressing the Test
button again. All interconnected alarms should respond.
• The smoke alarm is operating once AC power is applied, a fresh
battery is installed (only for battery backup models i12040ACA
and P12040CA) and testing is complete. When the smoke alarm
sensor chamber senses products of combustion, the horn will
sound a loud (85db) alarm until the sensing chamber is cleared of
smoke particles.
Alarm Tamper Resist Feature
• To make the smoke alarm tamper-resistant, a locking pin has
been provided in the bag with the screws and anchors. Using this
pin will help deter children and others from removing the alarm
from the mounting plate. To use the pin, insert it into the hole
in the side of the alarm after the alarm has been installed on the
mounting plate (Image 4D).
NOTE: The tamper-resistant pin will have to be removed in order to change
the battery (models i12040ACA and P12040CA). Use long nose pliers to
pull the pin out of the hole. It is now possible to remove the alarm from the
mounting plate.
2. Installation

Hush®Control Feature
CAUTION: This feature should only be used to silence an alarm that was
activated by a readily known non hazardous condition, such as smoke
from cooking.
Combustion particles from cooking may set off the alarm if the alarm
is located close to the cooking area. Large quantities of combustible
particles are generated from spills or when broiling. Using the fan on a
range hood that vents to the outside (non-recirculating type) will also
help remove these combustible particles from the kitchen.
The Hush®button is extremely useful in a kitchen area or other areas
prone to nuisance alarms.
The Hush®feature, activated by pushing the Hush®button on the smoke
alarm cover, temporarily desensitizes the alarm. If the smoke is not too
dense, the alarm will silence, the Red LED will flash every 10 seconds
and some units may chirp approximately every 40 seconds for up to 8
minutes.
The smoke alarm will automatically reset to normal sensitivity after
approximately 8 minutes. If after this period particles of combustion are
still present, the alarm will sound again.
The Hush®feature can be used repeatedly until the air has been
cleared of the condition causing the alarm. If the cause of the alarm
is immediately known and you have determined that a safe condition
exists, then pressing the Hush button will temporarily desensitize the
alarm and the alarm will silence if the smoke is not too dense.
NOTE: Dense smoke will override the Hush®feature and sound a
continuous alarm.
3. Operation

LED Indicators
This alarm is equipped with red and green LED indicators:
The green LED (when illuminated) indicates the presence of AC power.
The red LED located under the test / hush button) has four modes of
operation:
Standby Condition: The red LED will flash every 40 seconds to indicate
that the smoke alarm is operating properly.
Alarm Condition: When the alarm senses products of combustion and
goes into alarm, the red LED will flash one flash per second. The flashing
LED and pulsating alarm will continue until the air is cleared.
WHEN UNITS ARE INTERCONNECTED, only the red LED of the alarm
which senses the smoke or is being tested (the originating unit) will flash.
All other units in the interconnect system will sound an alarm but their
red LED’s will NOT flash.
Alarm Memory (Models i12020ACA and i12040ACA only): This
smoke alarm is equipped with an alarm memory, which provides a
visual indication when an alarm has been activated. The red LED will
illuminate for about 1.5 seconds every 20 seconds to indicate the
memory condition. The memory will remain activated until pushing
the test button resets it or will time-out between 11 to 13 hours. In an
interconnected installation only the memory of the originating alarm will
be activated.
Hush®mode: The red LED will flash every 10 seconds, indicating the
smoke alarm is in the Hush®mode.
3. Operation

Testing
NOTE: WEEKLY TESTING IS REQUIRED!
CAUTION: Due to the loudness (85 decibels) of the alarm, always stand an
arms length away from the unit when testing.
Test by pushing the test button on the cover and hold it down for a
minimum of 5 seconds. This will sound the alarm if all the electronics,
circuitry, horn and battery (if applicable) are working. If the alarm does
not sound insure that the AC power is on (green LED is illuminated).
If the AC power is on and you have already replaced the battery (if
applicable), the alarm must be replaced. DO NOT use an open flame
to test your alarm, you could damage the alarm or ignite combustible
materials and start a fire.
Test the alarm weekly to ensure proper operation. Erratic or low sound
coming from your alarm may indicate a defective alarm, and it should be
returned for service (see Warranty section).
Alarms failing an alarm test, or not operating normally, must be replaced
with a new alarm. Similarly, alarms more than 10 years old must be
replaced.
Alarm Removal
If the smoke alarm tamper resist feature has been activated, refer to the
Alarm Tamper Resist Feature section for removal instructions.
To remove the alarm from the mounting plate, rotate the alarm in the
direction of the “OFF” arrow on the cover. To disconnect the AC Quick-
Connect wire harness, squeeze the locking arms on the sides of the
Quick Connector while pulling the connector away from the bottom of
the alarm (see Image 5).
3. Operation

Battery Replacement
Models i12040ACA and P12040CA
These alarms have a low/missing battery monitor circuit which will cause
the alarm to “chirp” approximately every 30-40 seconds for a minimum
of seven (7) days when the battery gets low. Replace the battery when
this condition occurs.
Models i12040ACA and P12040CA use a 9 V carbon zinc battery
(alkaline and lithium batteries may also be used). A fresh battery should
last for one year under normal operating conditions.
Use only the following 9 volt batteries for replacement:
Carbon-Zinc Type Eveready 1222
Gold Peak 1604P or 1604S
Alkaline Type Energizer 522
Duracell MN1604 or MX1604
Gold Peak 1604A
Panasonic 6AM6, 6AM-6, 6AM-6PI,
6AM6X and 6LR61 (GA)
Lithium Type Ultralife U9VL-J
These batteries can be purchased at your local retailer.
WARNING! Use only the batteries specified above. Use of different
batteries than the recommended ones, may have a detrimental effect
on the smoke alarm. A good safety measure is to replace the battery at
least once a year, or at the same time you change your clocks for daylight
saving time. Be sure to follow the battery installation instructions printed
on the back of the alarm.
SMOKE SENSING CHAMBER OPERATION: THIS ALARM WILL “CHIRP” IF
ABNORMAL OPERATION OF THE SMOKE-SENSING CHAMBER IS DETECTED.
THIS CHIRP WILL OCCUR APPROXIMATELY 20 SECONDS AFTER THE RED
LED FLASH. REPLACE THE ALARM IF THIS CONDITION OCCURS.
NOTE: WEEKLY TESTING IS REQUIRED!
4. Maintenance

WARNING: Please read carefully and thoroughly.
• NFPA 72 states: Life safety from fire in residential occupancies
is based primarily on early notification to occupants of the need
to escape, followed by the appropriate egress actions by those
occupants. Fire warning systems for dwelling units are capable
of protecting about half of the occupants in potentially fatal
fires. Victims are often intimate with the fire, too old or young,
or physically or mentally impaired such that they cannot escape
even when warned early enough that escape should be possible.
For these people, other strategies such as protection-in-place or
assisted escape or rescue are necessary.
• Smoke alarms are devices that can provide early warning of
possible fires at a reasonable cost; however, alarms have sensing
limitations. Ionization sensing alarms may detect invisible fire
particles (associated with fast flaming fires) sooner than photoelectric
alarms. Photoelectric sensing alarms may detect visible fire particles
(associated with slow smoldering fires) sooner than ionization
alarms. Home fires develop in different ways and are often
unpredictable. For maximum protection, Kidde recommends that
both Ionization and Photoelectric alarms be installed.
• A battery powered alarm must have a battery of the specified type,
in good condition and installed properly.
• AC powered alarms (without battery backup) will not operate if the
AC power has been cut off, such as by an electrical fire, an open
fuse or circuit breaker
• Smoke alarms must be tested regularly to make sure the batteries
and the alarm circuits are in good operating condition.
• Smoke alarms cannot provide an alarm if smoke does not reach
the alarm. Therefore, smoke alarms may not sense fires starting in
chimneys, walls, on roofs, on the other side of a closed door or on
a different floor.
• If the alarm is located outside the bedroom or on a different floor,
it may not wake up a sound sleeper.
5. Fire Safety

• The use of alcohol or drugs may also impair one’s ability to hear
the smoke alarm. For maximum protection, a smoke alarm should
be installed in each sleeping area on every level of a home.
• Although smoke alarms can help save lives by providing an early
warning of a fire, they are not a substitute for an insurance policy.
Home owners, landlords and tenants should have adequate
insurance to protect their lives and property.
Good Safety Habits
Develop and practice a plan of escape!
• Install and maintain fire extinguishers on every level of the home
and in the kitchen, basement and garage. Know how to use the
fire extinguisher prior to an emergency.
• Make a floor plan indicating all doors and windows and at least
two (2) escape routes from each room. Second-storey windows
may need an escape ladder.
• Have a family meeting and discuss your escape plan, showing
everyone what to do in case of fire.
• Determine a place outside your home where you all can meet if a
fire occurs.
• Familiarize everyone with the sound of the smoke alarm and train
them to leave your home when they hear it.
• Practice a fire drill at least every six months, including fire drills at
night. Ensure that small children hear the alarm and wake when
it sounds. They must wake up in order to execute the escape
plan. Practice allows all occupants to test your plan before an
emergency. You may not be able to reach your children. It is
important they know what to do.
• Current studies have shown smoke alarms may not awaken all
sleeping individuals, and that it is the responsibility of individuals
in the household that are capable of assisting others to provide
assistance to those who may not be awakened by the alarm
sound, or to those who may be incapable of safely evacuating the
area unassisted.
5. Fire Safety

Alarm Exit Procedure
• Leave immediately by your escape plan. Every second counts, so
don’t waste time getting dressed or picking up valuables.
• In leaving, don’t open any inside door without first feeling its
surface. If hot, or if you see smoke seeping through cracks, don’t
open that door! Instead, use your alternate exit. If the inside of the
door is cool, place your shoulder against it, open it slightly and be
ready to slam it shut if heat and smoke rush in.
• Stay close to the floor if the air is smokey. If possible do not
breathe too deeply to avoid smoke inhalation. Breathe through a
cloth (preferably wet) if possible.
• Once outside, go to your selected meeting place and make sure
everyone is there.
• Call the fire department from your neighbor’s home - not from yours!
• Don’t return to your home until the fire officials say that it is all
right to do so.
• There are situations where a smoke alarm may not be effective to
protect against fire. For instance:
a) smoking in bed
b) leaving children home alone
c) cleaning with flammable liquids, such as gasoline
d) fires where the victim is intimate with a flaming initiated fire; for
example, when a person’s clothes catch fire while cooking
e) fires where the smoke is prevented from reaching the
detector due to a closed door or other obstruction
f) incendiary fires where the fire grows so rapidly that an occupant’s
egress is blocked even with properly located detectors
NRC Information
Ionization type smoke alarms use a very small amount of a radioactive
element in the sensing chamber to enable detection of visible and
invisible combustion products. The radioactive element is safely contained
in the chamber and requires no adjustments or maintenance. This smoke
alarm meets or exceeds all government standards. It is manufactured and
distributed under license from the U.S. Nuclear Regulatory Commission.
5. Fire Safety
-