null  User manual
Carbon Monoxide Alarm
User’s Guide
with Battery Backup
AC Plug-in Operated with Battery Backup
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.
User's Guide P/N 820-1442 Rev. B 10/12
What to do When the Alarm Sounds!
Carbon Monoxide Alarm Procedure
WARNING: Activation of the CO
Alarm indicates the presence of Carbon
Monoxide (CO) which can kill you.
If alarm sounds 4 quick beeps, 5 seconds off:
1) Immediately move to fresh air - outdoors or by an open
door/window. Do a head count to check that all persons are
accounted for. Do not re-enter the premises nor move away
from the open door/window until the emergency services
responders have arrived, the premises have been aired out, and
your alarm remains in its normal condition.
2) Call your emergency services (Fire Department or 911);
Never restart the source of a CO problem until it has been
corrected. Never ignore the sound of the alarm!
If the alarm is sounding, pressing the test/reset button will
terminate the alarm. If the CO condition that caused the alert
in the first place continues, the alarm will reactivate. If the
unit alarms again within six minutes, it is sensing high levels
of CO which can quickly become a dangerous situation.
Note: Many times throughout this User’s Guide, we will refer to
Carbon Monoxide as “CO”.
This Kidde carbon monoxide (CO) alarm is an important part of your
family’s home safety plan. This alarm has been designed and tested to
detect CO buildup in a residential environment. Your alarm is for use
specifically in the home. As an owner of a CO alarm, there are some
basic facts you should know about for your protection.
Many people think that CO alarms operate like smoke alarms. Like
smoke alarms, CO alarms monitor the air in your home and sound a
loud alarm to warn you of trouble. The way you respond to a CO alarm
is quite different than a smoke alarm. That’s because a house fire and a
CO problem are two distinctly different situations. If your smoke alarm
were to alarm, you would quickly be able to judge the level of danger
you were in with your senses. You can see and smell the smoke, feel the
heat, see, and possibly hear the fire burning. You can also readily see if
your smoke alarm is alarming in a non-emergency situation. Because
your sense of sight, smell, hearing and touch give you information, you
can almost instantly judge what action to take if you hear your smoke
CO is an invisible, odorless, tasteless and non-irritating gas – completely
undetectable to your senses. That’s why it is important to your safety
that you have a CO alarm.
Important Warning Statements
IMPORTANT: This carbon monoxide alarm is designed to detect
carbon monoxide from ANY source of combustion. It is NOT
designed to detect smoke, fire, or any other gas.
WARNING: Carbon monoxide alarms are not smoke alarms.
This carbon monoxide alarm is not a substitute for installing and
maintaining an appropriate number of smoke alarms in your
This carbon monoxide alarm will not sense smoke, fire, or any
poisonous gas other than carbon monoxide even though carbon
monoxide can be generated by fire. For this reason you must
install smoke alarms to provide early warning of fire and to
protect you and your family from fire and its related hazards.
CAUTION: This alarm will only indicate the presence of carbon
monoxide at the sensor. Carbon monoxide may be present in
other areas.
Important Warning Statements
WARNING: This product is intended for use in ordinary indoor
locations of family living units. It is not designed to measure
compliance with commercial or industrial standards. It is not
suitable for installation in hazardous locations as defined in the
National Electric Code.
The installation of this device should not be used as a substitute
for proper installation, use and maintenance of fuel burning
appliances, including appropriate ventilation and exhaust
systems. It does not prevent CO from occurring, nor can it solve
and existing CO problem.
WARNING: This device is designed to protect individuals from
acute effects of carbon monoxide exposure. It may not fully
safeguard individuals with specific medical conditions. If in doubt,
consult a medical practitioner.
Individuals with medical problems may consider using warning
devices which provide audible and visual signals for carbon
monoxide concentrations under 30 PPM.
This carbon monoxide alarm requires a continuous supply of
electrical power – it will not work without power. Models
without battery backup will not operate during power failure.
This alarm has not been investigated for carbon monoxide
detection below 70 PPM.
Contents of This User’s Guide
1. Information About Carbon Monoxide
2. Product Features and Specifications
3. Installation Locations
4. Installation Instructions
5. Alarm Characteristics
6. Operating Characteristics
7. Maintenance
8. Limited Warranty
1. Information About Carbon Monoxide
General Carbon Monoxide Information
Carbon monoxide is a colorless, odorless and tasteless poison gas that
can be fatal when inhaled. CO inhibits the blood’s capacity to carry
Periodically review this user's guide and discuss your CO alarm
emergency procedure with all the members of your family. Never ignore
a CO alarm. A true alarm is an indication of potentially dangerous levels
of CO. CO alarms are designed to alert you to the presence of CO
before an emergency – before most people would experience symptoms
of CO poisoning, giving you time to resolve the problem calmly.
Determine if anyone in the household is experiencing symptoms of CO
poisoning. Many cases of reported CO poisoning indicate that while
victims are aware they are not well, they become so disoriented they are
unable to save themselves by either exiting the building or calling for
assistance. Also, young children and household pets may be the first
affected. You should take extra precautions to protect high-risk persons
from CO exposure because they may experience ill effects from CO at
levels that would not ordinarily affect a healthy adult.
Symptoms of CO Poisoning
The following common symptoms are related to CO poisoning and
should be discussed with ALL members of the household.
Mild Exposure:
Slight headache, nausea, vomiting, fatigue (often described as “flu-like”
Medium Exposure:
Severe throbbing headache, drowsiness, confusion, fast heart rate.
Extreme Exposure:
Unconsciousness, convulsions, cardio-respiratory failure, death.
If you experience even mild symptoms of CO poisoning, consult your
doctor immediately!
1. Information About Carbon Monoxide
Possible Sources of Carbon Monoxide
Inside your home, appliances used for heating and cooking are the most
likely sources of CO. Vehicles running in attached garages can also
produce dangerous levels of CO.
CO can be produced when burning any fossil fuel, such as gasoline,
propane, natural gas, oil and wood. It can be produced by any fuelburning appliance that is malfunctioning, improperly installed, or not
ventilated correctly, such as:
• Automobiles, furnaces, gas ranges/stoves, gas clothes dryers, water
heaters, portable fuel burning space heaters and generators,
fireplaces, wood-burning stoves and certain swimming pool heaters.
• Blocked chimneys or flues, back drafts and changes in air pressure,
corroded or disconnected vent pipes, loose or cracked furnace
• Vehicles and other combustion engines running in an open or closed
garage, attached or near a home.
• Burning charcoal or fuel in grills and hibachis in an enclosed area.
Conditions That Can Produce Carbon Monoxide
The following conditions can result in transient CO situations:
• Excessive spillage or reverse venting of fuel-burning appliances caused
by outdoor ambient conditions, such as, wind direction and/or
velocity, including high gusts of wind, heavy air in the vent pipes
(cold/humid air with extended periods between cycles).
• Negative pressure resulting from the use of exhaust fans.
• Simultaneous operation of several fuel-burning appliances competing
for limited internal air.
• Vent pipe connections vibrating loose from clothes dryers, furnaces, or
water heaters.
• Obstructions in, or unconventional, vent pipe designs which can
amplify the above situations.
• Extended operation of unvented fuel-burning devices (range, oven,
fireplace, etc.).
• Temperature inversions which can trap exhaust gases near the ground.
• Vehicle idling in an open or closed garage, or near a home.
1. Information About Carbon Monoxide
To be safe, know the possible sources of CO in your home. Keep fuelburning appliances and their chimneys and vents in good working
condition. Learn the early symptoms of exposure, and if you suspect CO
poisoning, move outside to fresh air and get emergency help. Your first
line of defense is an annual inspection and regular maintenance of your
appliances. Contact a licensed contractor or call your local utility
company for assistance.
Information About Carbon Monoxide Alarms –
What They Can and Cannot Do:
CO alarms provide early warning of the presence of CO, usually before a
healthy adult would experience symptoms. This early warning is possible,
however, only if your CO alarm is located, installed and maintained as
described in this guide.
Because carbon monoxide is a cumulative poison, long-term exposures
to low levels may cause symptoms, as well as short-term exposures to
high levels. This Kidde unit has a time-weighted alarm – the higher the
level of CO present, the sooner the alarm will be triggered.
This CO alarm can only warn you of the presence of CO. It does not
prevent CO from occurring, nor can it solve an existing CO problem. If
your unit has alarmed and you’ve provided ventilation by leaving your
windows and doors open, the CO buildup may have dissipated by the
time help responds. Although your problem may appear to be
temporarily solved, it’s crucial that the source of the CO is determined
and that the appropriate repairs are made.
This CO alarm is designed to act as a monitor; it is not designed for use
as a short-term testing device to perform a quick check for the presence
of CO.
CO alarms have limitations. Like any other electronic device, CO alarms
are not fool-proof. CO alarms have a limited operational life. You must
test your CO alarm weekly, because it could fail to operate at any time.
If your CO alarm fails to test properly, or if its self-diagnostic test reveals
a malfunction, immediately have the unit replaced. This alarm will not
monitor CO levels while in an error condition.
CO alarms can only sense CO that reaches the unit’s sensor. It’s possible
that CO may be present in other areas without reaching the alarm. The
rate and ability that which CO reaches the alarm may be affected by:
• Doors or other obstructions.
• Fresh air from a vent, an open window or other source.
1. Information About Carbon Monoxide
• CO being present on one level of the home and not reach a CO alarm
installed on a different level. (For example, CO in the basement may
not reach an alarm on the second level, near the bedrooms).
For these reasons, we recommend you provide complete coverage by
placing a CO alarm on every level of the home. Please carefully read all
information on properly installing this CO alarm.
CO alarms should not be used to detect the presence of natural gas
(methane), propane, butane, or other combustible fuels.
2. Product Features and Specifications
2. Product Features and Specifications
Activate Slide
Activation Switch
(see Normal Operating
9 Volt
Battery Door
(used with Tamper-Resist Feature)
Tamper-Resist Feature
This is a constant 85dB alert to notify consumers the unit has been
unplugged or has come loose from the outlet. THIS FEATURE IS INITIALLY
To activate the tamper resist feature: Move the Tamper Resist Activate
Slide away from the plug. Once enabled, there is a two minute delay
when power is supplied to give you time to plug in the unit after
activating the battery. This feature is disabled once the battery voltage
has reached a level to cause a low battery warning chirp. Pressing the
Test/Reset button will defeat the 85dB tamper alarm for two minutes to
allow time for the battery to be changed without the alarm sounding. To
deactivate the feature, press in the Tamper-Resist Activation switch and
move the activate slide towards the switch.
Low Battery Warning
If the 9 V battery is missing or battery power is low, the unit will chirp
every 15 seconds to indicate the battery must be replaced. If the battery
is depleted beyond the point of having the capacity to operate the unit,
it will chirp every 30 to 45 seconds and will NOT respond to the test
button being pressed if operating on battery power. THE BATTERY
2. Product Features and Specifications
When the battery needs to be replaced, the unit will produce a low
battery warning. The Low Battery HUSH® feature allows you to press the
button on the alarm and disable the “chirp” for a random period of up
to 12 hours. This gives you a chance to replace the battery at a more
convenient time without sacrificing your safety by disconnecting the
alarm from power. During this Low Battery HUSH® period, your alarm is
monitoring for CO.
IMPORTANT: Ten (10) years after the initial power up, this alarm
will “beep” two times every 30 seconds to indicate that it is time
to replace the alarm. Replace the alarm immediately! It will not
detect CO in this condition.
To help identify the date to replace the alarm, a label has been affixed to
the side of the alarm. Write the “replace by” date (ten years from power
up) in a permanent marker on this label.
Operating Range: 4.4°C (40°F) to 37.8°C (100°F)
Operating range: 10-95% non-condensing
Audible Alarm:
85+ dB at 10' @ 3.4±0.5 KHz pulsing alarm
120 volts AC, 60 Hz, 60 mA max, 9 volt battery back-up
Alarm Response Times:
70 PPM = 60-240 min., 150 PPM = 10-50 min., 400 PPM = 4-15 min.
3. Installation Locations
Recommended Installation Locations
CO alarms should be mounted in or
near bedrooms and living areas. It is
recommended that you install a Kidde
CO alarm on each level of your home.
When choosing your installation
locations, make sure you can hear the
Recommended Locations
alarm from all sleeping areas. If you
install only one CO alarm in your
home, install it near bedrooms, not in the basement or furnace room.
• When wall mounting, place out of reach of children. Under no
circumstances should children be allowed to handle the CO alarm.
Locations To Avoid
IMPORTANT: Improper location can affect the sensitive electronic
components in this alarm. To avoid causing damage to the unit, to
provide optimum performance, and to prevent unnecessary nuisance
• Do not install in kitchens, garages or furnace rooms that may expose
the sensor to substances that could damage or contaminate it.
• 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 crawl spaces, attics,
porches and garages.
• Do not install within 5 ft. of heating or cooking appliances. (Kidde
recommends 15 ft. to prevent nuisance alarms).
• Do not install near vents, flues, chimneys or any forced/unforced air
ventilation openings.
• Do not install near ceiling fans, doors, windows or areas directly
exposed to the weather.
• Do not install in dead air spaces, such as peaks of vaulted ceilings or
gabled roofs, where CO may not reach the sensor in time to provide
early warning.
• Do not install this unit near deep-cell large batteries. Large batteries
have emissions that can cause the alarm to perform at less than
optimum performance.
3. Installation Locations
• Do not obstruct the vents located on the alarm. Do not place the
alarm where drapes, furniture or other objects block the flow of air to
the vents.
• Do not install on a switched or dimmer-controlled outlet.
4. Installation Instructions
How to Install Your Alarm
Direct Plug Alarm
Activate Slide
To install:
1. Choose a standard
120 V unswitched
outlet to plug the
alarm into.
Activation Switch
(see Normal Operating
2. Write the date ten years from installation on the Replace by sticker on
the CO alarm.
3. If desired, activate the Power-Disconnection Alert Switch by moving
the Power-Disconnection Alert Peg away from the Tamper Resist
Activation Switch. The tamper resist feature signals a loud 85dB alarm
should the unit become unplugged or loose from the outlet. (See
Power-Disconnection Alert details in the Product Features and
Specifications section.)
4. Pull the yellow tab to activate the battery backup.
5. Plug the alarm into the outlet.
CAUTION: Do not rotate the alarm while it is plugged into an outlet, as
damage to plug may result.
5. Alarm Characteristics
Carbon Monoxide Alarm Indicator
When the alarm senses a dangerous level of CO, the unit will emit a
loud alarm pattern. The alarm pattern is 4 quick beeps followed by 5
seconds of silence. This cycle repeats as long as a dangerous CO
conditions exist. The red Alarm LED will flash the same pattern.
WARNING: When powered by battery backup only; after four
minutes, the alarm will sound and flash only once every minute, until
the alarm is reset or the CO is eliminated.
6. Operating Characteristics
When you first power up the alarm: The alarm will sound briefly,
then the green Operate LED will light. This indicates that the CO alarm is
receiving power and that the alarm circuit is functioning.
Within a few minutes, your carbon monoxide alarm will start monitoring
for CO and will continue to do so as long as it receives power or the end
of life function is activated.
When the CO alarm loses power: If you have a good 9V battery
installed, the alarm will automatically switch to the battery backup mode
and the green LED will flash approximately every 10 seconds. The unit
will continue to operate normally and detect CO for at least 20 hours.
When AC power is restored, the alarm will automatically switch back to
normal operating mode and the green LED will come on continuously.
When the CO alarm is unplugged: If the unit is unplugged it will
produce a constant tone until the battery is removed or the unit is
plugged back into the wall unless the Power-Disconnection Alert feature
has been deactivated or disabled.
Observe the CO alarm regularly to make sure the green Operate LED is
on, indicating normal operation.
If the green Operate LED is not on, unplug the CO alarm, then plug it in
again. This will clear the alarm for restart. If the green Operate LED does
not light, your CO alarm may be malfunctioning.
When the CO alarm detects an error condition: If the unit detects an
internal error or malfunction, it will produce one beep every 30 seconds
with a red LED flash. If error condition continues, replace the CO alarm
immediately. Unit will not respond to CO in this condition.
7. Maintenance
NOTE: This unit is sealed. The cover is not removable.
Due to the loudness of the alarm, we suggest that you place your
fingers over the sounder opening while testing your alarm.
CAUTION: Continuous exposure to the high sound level of this
alarm over an extended period of time may cause hearing loss.
To test the CO alarm, press and release the Test/Reset button, you will
hear 4 quick beeps – followed by 5 seconds of silence – followed by 4
quick beeps. Notice the red Alarm LED flashes when the unit alarms. The
alarm will then return to monitoring for carbon monoxide.
NOTE: You do not need to press the Test button to take a CO
Battery Replacement
WARNING: If at any time you test the alarm and it does not
perform as described, have it replaced immediately.
NOTE: This CO alarm is not battery operated. However, this alarm is
equipped with 9 volt battery backup – the 9 volt battery is to supply
short term back-up during a power outage.
Remove the screw, if it has been used, that is holding the battery door
located on the bottom of the unit. Slide the battery door in the direction
of the arrows to release it. Remove the battery and replace it with one
of the following approved replacement batteries:
• Energizer 522
• Ultralife lithium U9VL-J
• Duracell MN1604, MX1604
Replace the battery door and re-install the screw if it is used.
Any of these batteries can be purchased where you bought the alarm or
at your local hardware store.
IMPORTANT: Constant exposures to high or low humidity may reduce
battery life. A good safety measure is to replace the battery at least once
a year, or at the same time as you change your clocks for daylight saving
After installing or changing the battery, reinstall your alarm. Test your
alarm by using the Test/Reset button and check that the green Operate
LED is on.
7. Maintenance
Maintenance Tips
To keep your alarm in good working order, you must follow these steps:
• Test the alarm once a week by pressing the Test/Reset button.
• Vacuum the alarm cover once a month to remove accumulated dust.
• Instruct children never to touch, unplug or otherwise interfere with
the unit. Warn children of the dangers of CO poisoning.
• Never use detergents or solvents to clean the alarm. Chemicals can
permanently damage or temporarily contaminate the sensor.
• Avoid spraying air fresheners, hair spray, paint or other aerosols near
the alarm.
• Do not paint the unit. Paint will seal the vents and interfere with
proper sensor operation.
Move the CO Alarm to a remote location, to prevent possible damage or
contamination of the sensor, prior to performing any of the following:
• Staining or stripping floors or furniture, painting or wall-papering
• Using aerosols or adhesives
WARNING: Reinstall the CO Alarm as soon as possible to
assure continuous protection.
The following is a list of substances that at high levels can damage the
sensor or cause temporary readings that are not CO readings:
• Ethylene, ethanol, alcohol, iso-propanol, benzene, toluene, ethyl
acetate, hydrogen, hydrogen sulfide and sulfur dioxide.
• Also most aerosol sprays, alcohol based products, paint, thinner,
solvent, adhesive, hair spray, after shave, perfume, auto exhaust (cold
start) and some cleaning agents.
8. Limited Warranty
Ten Year Limited Warranty
If after reviewing this user’s guide you feel that your alarm is defective in any way, do not
tamper with the unit. In many cases, the quickest way to exchange your alarm is to return
it to the original place of purchase. Alternatively, you may return it for servicing to Kidde. If
you have questions, call Kidde Product Support at 1-800-880-6788.
Kidde warrants that the enclosed alarm (but not the battery) will be free from defects in
material and workmanship or design under normal use and service for a period of ten years
from the date of purchase. The obligation of Kidde under this warranty is limited to repairing
or replacing the alarm or any part which we find to be defective in material, workmanship
or design, free of charge, upon sending the alarm with proof of date of purchase, postage
and return postage prepaid, to: Kidde Canada Inc., P.O. Box 40, Apsley, ON K0L 1A0.
This warranty shall not apply to the alarm if it has been damaged, modified, abused or
altered after the date of purchase or if it fails to operate due to improper maintenance or
inadequate D.C. power. Any implied warranties arising out of this sale, including but not
limited to the implied warranties of description,merchantability and fitness for a particular
purpose, are limited in duration to the above warranty period. In no event shall the
Manufacturer be liable for loss of use of this product or for any indirect, special, incidental
or consequential damages, or costs, or expenses incurred by the consumer or any other user
of this product, whether due to a breach of contract, negligence, strict liability in tort or
otherwise. The Manufacturer shall have no liability for any personal injury, property damage
or any special, incidental, contingent or consequential damage of any kind resulting from gas
leakage, fire or explosion.
Since some provinces do not allow limitations of the duration of an implied warranty or do
not allow the exclusion or limitation of incidental or consequential damages, the above
limitations or exclusions may not apply to you. While this warranty gives you specific legal
rights, you may also have other rights which vary from province to province. The above
warranty may not be altered except in writing signed by both parties hereto.
IMPORTANT: Do not remove unit back cover. Back cover removal will void warranty.
Your Kidde Carbon Monoxide Alarm is not a substitute for prperty, disability, life or other
insurance of any kind. Appropriate insurance coverage is your responsibility. Consult your
insurance agent.
Kidde Canada Inc., P.O. Box 40, Apsley, ON K0L1A0
Call our Product Support Line at 1-800-880-6788 or contact
us at our website at
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