Defender LL6170 User manual

- 1 -
R
Low Level CO Monitor
Owner’s Manual
Owner’s ManualOwner’s Manual
Owner’s Manual
Sealed Lithium Battery Powered
LL6170
Sealed Lithium Battery Powered
Low Level CO Monitor with LCD
Digital Display, Single Station
R
The UL 2034 standard for residential carbon monoxide (CO) alarms does
not permit listed CO alarms to automatically display or alarm at CO levels
below 30 PPM. The Defender LL6170 is designed to provide added
protection for older adults, pregnant women, young children, and persons
with medical conditions who may be more vulnerable to lower CO levels,
and is not UL listed. When installed in residential applications, this monitor
should supplement, not replace, a UL listed CO alarm.
ATTENTION: Please read all instructions before installation and save this
manual for future reference.
Manual P/N: EOMN0-110-6170
Rev-02 2020-2-14
Copyright © 2020 Defender

- 2 -
CONTENTS OF THIS MANUAL
1. IMPORTANT MESSAGE AND INSTRUCTIONS
2. WARNING MESSAGES
3. FEATURES AND SPECIFICATIONS
4. INFORMATION ABOUT CARBON MONOXIDE
5. RECOMMENDED LOCATIONS OF MONITORS
6. LOCATIONS TO AVOID
7. INSTALLATION INSTRUCTIONS
8. FUNCTIONS AND OPERATION
9. TEST AND MUTE MONITOR
10. WHAT TO DO WHEN THE ALARM SOUNDS
11. LIMITATIONS OF CARBON MONOXIDE MONITORS
12. GOOD SAFETY HABITS
13. MONITOR END-OF-LIFE AND SERVICE
14. DESCRIPTION OF AUDIBLE AND VISUAL SIGNALS
15. THREE-YEAR LIMITED WARRANTY
1.
IMPORTANT MESSAGE AND INSTRUCTIONS
CAUTION! THIS MONITOR WILL ONLY INDICATE THE
PRESENCE OF CARBON MONOXIDE GAS AT THE SENSOR. CARBON MONOXIDE
GAS MAY BE PRESENT IN OTHER AREAS. THIS CARBON MONOXIDE MONITOR
IS DESIGNED TO DETECT CARBON MONOXIDE GAS FROM ANY SOURCE OF
COMBUSTION. IT IS NOT DESIGNED TO DETECT SMOKE, FIRE OR ANY OTHER
GAS. THIS DEVICE IS DESIGNED TO HELP PROTECT INDIVIDUALS FROM THE
EFFECTS OF CHRONIC EXPOSURE TO LOW LEVELS OF CARBON MONOXIDE,
THOUGH IT MAY NOT FULLY SAFEGUARD INDIVIDUALS WITH SPECIFIC
MEDICAL CONDITIONS. IF IN DOUBT, CONSULT A MEDICAL PRACTITIONER.
CAUTION!
CO detection is best achieved by the installation of CO
monitors and alarms in all conditioned areas and rooms of the building.
IMPORTANT! This monitor must be replaced after five years from
installation date. Write the replacement date onto the “REPLACE BY” label affixed
to bottom of monitor.
IMPORTANT! If service is required, do not try to repair this CO monitor
yourself. Refer to the instructions in Section 13 for service.
!
!

- 3 -
Add the telephone numbers of the local emergency service provider and a qualified
technician to the self-adhesive labels provided. Place one label next to the monitor, and
the other label near a source of fresh air where you plan to gather when the carbon
monoxide monitor signals are activated.
After installation is completed, TEST the monitor by pressing the TEST/RESET/MUTE
button for at least 2 seconds. Detailed testing instructions are outlined in Section 9.
DO NOT TRY TO TEST THIS MONITOR IN ANY OTHER WAY: If no alarm sounds, or
low or erratic sound emits from the monitor during a test, the unit may be defective and
should be returned for service. (See Section 13)
CLEANING THE MONITOR: You can clean the monitor by using a vacuum cleaner
brush to vacuum around the openings on the monitor. The outside of the monitor may be
wiped with a cloth slightly dampened with water only. After cleaning, confirm that the
LCD displays 0 PPM. Test the monitor by operating the TEST/RESET/MUTE button.
DO NOT PAINT ON OR NEAR THE MONITOR: The paint will damage the sensor or
block the vents and affect the monitor function.
DO NOT SPRAY AIR REFRESHENER, CLEANING SUPPLIES, OR INSECT KILLER
ON OR NEAR THE MONITOR: Certain kinds of aerosol chemicals will damage the
sensor and cause improper operation. The building must be well ventilated when using
cleaning supplies or similar contaminants.
2.
W
ARNING MESSAGES
WARNING! Actuation of this device indicates the presence of carbon
monoxide (CO) which can KILL YOU.
WARNING! Test the CO monitor at least once a week
WARNING! Test the CO monitor immediately after the building has
been vacant.
WARNING! The loudness of the alarm sound may cause you to feel
uncomfortable. Cover the horn opening with the palm of your hand to reduce the
volume while testing the monitor.
WARNING! Constant exposure to high or low temperature, or high
humidity, may shorten battery life.
!
!
!
!
!

- 4 -
3.
FEATURES AND SPECIFICATIONS
•Low Level Carbon Monoxide Monitor
•Factory Sealed Lithium Batteries with Soldered Connections
•Accurate and Reliable Water-Based Electrochemical Sensor
•Integrated Filter for Removing Nuisance Gases
•Samples for Carbon Monoxide (CO) Every 5 Seconds
•Large Alpha-Numeric LCD Readout
•Continuously Displays CO Levels Detected of 5 PPM or more
•Automatic Visual Alert Signals at 9 PPM
•Automatic Audible and Visual Alarm Signals at 15 PPM
•Manually Displays Peak CO Levels Detected from 5 to 500 PPM
•Manually Displays Duration of Peak CO Level from 1 to 999 minutes
•Separate Memory and Test Buttons
•Separate Alarm, Power and Service LED’s
•Automatic and Manual Battery Activation
•Self Diagnostic Circuitry and Sensor Life Monitor
•Secure Mounting System
•Three Year Limited Warranty for Monitor and Batteries
Power LED
Test/Reset/Mute
Button
Display CO Level
Button
85dB Horn
Mounting Screw
Large Alpha-Numeric LCD
Secure-Lock Mounting Plate
Alarm LED
Service LED

- 5 -
SPECIFICATIONS
Visual CO Alert Signals
5 - 500 PPM within 1 minute of detection:
Continuously displays current CO level detected of 5 PPM or more.
9 - 14 PPM within 10 minutes:
Displays CO level and ALARM red LED flashes 4 times every minute. Reset button
suspends flashing ALARM red LED for eight hours. Suspension is overridden, and alarm
signals are activated within 60 minutes, if CO level detected rises above 14 PPM.
Visual and Audible CO Alarm Signals
15 - 24 PPM within 60 minutes:
Displays CO level, beeps 4 times every minute, and ALARM red LED flashes in
sync with beep.
25 - 49 PPM within 30 minutes:
Displays CO level, beeps 4 times every 6 seconds for 5 minutes then beeps 4 times
every minute, and ALARM red LED flashes in sync with beep.
50 - 99 PPM within 15 minutes:
Displays CO level, beeps 4 times every 6 seconds for 5 minutes then beeps 4 times
every minute, and ALARM red LED flashes in sync with beep.
100 - 149 PPM within 5 minutes:
Displays CO level, beeps 4 times every 6 seconds for 5 minutes then beeps 4 times
every minute, and ALARM red LED flashes in sync with beep.
150 - 500 PPM at any time detected:
Displays CO level (above 500 PPM, flashes “500 PPM”), beeps 4 times every 6
seconds for 5 minutes then beeps 4 times every 20 seconds, and ALARM red LED
flashes in sync with beep.
Audible Mute Duration:
15 - 24 PPM: Mute button silences audible alarm signal for eight hours; ALARM red
LED continues to flash 4 times every minute. Mute is overridden and audible signal
reactivated within 1 minute if CO level detected rises above 24 PPM
25 - 49 PPM: Mute button silences audible alarm signal for 5 minutes; ALARM red
LED continues to flash 4 times every minute. Mute is overridden and audible signal
reactivated within 1 minute if CO level detected rises above 49 PPM
50 - 99 PPM: Mute button silences audible alarm signal for 5 minutes; ALARM red
LED continues to flash 4 times every minute. Mute is overridden and audible signal
reactivated within 1 minute if CO level detected rises above 99 PPM
100 - 149 PPM: Mute button silences audible alarm signal for 5 minutes; ALARM red
LED continues to flash 4 times every minute. Mute is overridden and audible signal
reactivated immediately if CO level detected rises above 149 PPM
150 - 500 PPM: Mute function is disabled

- 6 -
Sensor Type:
Electrochemical
Operating Temperature and Humidity:
40
o
F to 100
o
F @ 10% to 95% RH
Audible Signal:
Buzzer Horn Sounds 85 dB at 10 feet
Visual Signals:
•POWER green LED Indicates Low Power
•ALARM red LED Indicates CO Alert or Alarm
•SERVICE red LED Indicates Service Required
Detection Frequency:
Samples for CO every 5 seconds
LCD Digital Display:
•Automatically Displays Current CO Level Detected from 5 to 500 PPM
•Manually Display Peak CO Level Detected within last 30 Days from 5 to 500 PPM
•Manually Display Duration of Peak CO Level from 1 to 999 minutes
•Display Resolution 1 PPM
•Display Accuracy ±15%, plus +/-2% each succeeding year, or 5 PPM, whichever
is greater, from 20 to 500 PPM @ 50% RH, 72°F ±5°
•Because CO sensors typically lose sensitivity over time, it is recommended that
this monitor be replaced every three years in order to maintain display accuracy
•The sensor and display accuracy may be affected by environmental conditions
and other circumstances beyond manufacturer's control
Sensor Life Monitor
Activates sensor expiration signal after five years of operation
Factory Sealed Lithium Batteries
Two non-removable, non-replaceable lithium batteries for up to five years of
operation under normal conditions
Electrical Rating:
6VDC

- 7 -
4.
INFORMATION ABOUT CARBON MO
NOXIDE
WHAT IS CARBON MONOXIDE?
Carbon monoxide (CO) is a highly toxic, invisible, odorless, tasteless gas.
HOW IS CO GENERATED?
Carbon monoxide is generated through incomplete combustion of fuel in various
appliances. Faulty ventilation of furnaces, boilers, water heaters, space heaters,
fireplaces and wood burning stoves are the major cause of high CO levels in a building.
Automobile and small engine exhaust are another source of CO.
HOW DOES CO POISON PEOPLE?
The human body depends on oxygen for the burning of fuel (food) to provide us with the
energy that allows our cells to live and function. Oxygen makes up approximately 21%
of the atmosphere and enters our lungs when we breathe. In our lungs the oxygen
combines with the hemoglobin in the blood (oxyhemoglobin), and is carried in the blood
stream throughout the body where it releases oxygen to the cells.
Carbon monoxide is dangerous because it bonds more tightly to the hemoglobin
(carboxyhemoglobin, COHb) than oxygen does. When CO combines with hemoglobin,
the hemoglobin's ability to combine with oxygen is lost. As the COHb concentration
rises, people become nauseous, unconscious and ultimately die (see below).
WHAT ARE THE SYMPTOMS OF CARBON MONOXIDE POISONING?
Many people often confuse carbon monoxide poisoning with the flu; the initial symptoms
being very similar. Different concentrations of CO over various lengths of time cause
different symptoms.
The following symptoms may be related to CARBON MONOXIDE POISONING and
should be discussed with EVERYONE.
MILD EXPOSURE:
Slight headaches, nausea, vomiting, running nose, sore
eyes, fatigue (often described as “Flu-like” symptoms).
MEDIUM EXPOSURE:
Severe throbbing headache, dizziness, drowsiness,
confusion, fast heart rate.
EXTREME EXPOSURE:
Unconsciousness, convulsions, cardiorespiratory failure,
brain damage, death
Many cases of CARBON
MONOXIDE POISONING
indicate that while victims
are aware they are not well,
they become so disoriented
that they are unable to
save themselves by either
exiting the building or
calling for assistance. The
elderly, pregnant women,
young children, and
persons with medical
conditions are typically the
first affected.
55%
50%
15%
10%
5%
0%
45%
40%
35%
30%
25%
20%
COHb
Time (minutes)
8 15 26 35 45 60 75 90 110 140
400 PPM CO GAS EXPOSURE
NONE
HEADACHE
HEADACHE
HEADACHE AND NAUSEA
DROWSY
VOMITING
COLLAPSE
COMA AND PERMANENT BRAIN DAMAGE
PERMANENT BRAIN DAMAGE - DEATH
NONE

- 8 -
5.
RECOMMENDED LOCATION OF MONITORS
CO poisoning can happen anywhere in the building. CO monitors should be installed
onto an interior wall, five feet off the floor, and on every heated and air conditioned level
of the building. At the minimum, install CO monitors:
1. On every floor, and inside or near every area or room that may be occupied.
2. Inside any room where someone may sleep with the door closed, or that is occupied
by someone who may be more vulnerable to CO poisoning, such as older adults,
pregnant women, young children, and persons with medical conditions.
3. Near the entry to any room that contains combustion equipment.
BEDROOM
BEDROOM
KITCHEN
MAIN
BATH
UTILITY
MASTER
BEDROOM
MASTER
BATH
DINING
ROOM
LIVING
ROOM
W
D
.....
.....
.....
.....
.....
.....
HOUSE
Recommended CO
monitor location for
minimum protection
Additional CO
monitor location for
added protection
Secretarial
Cubicals
Kitchen
FoyerRecept. Men
Ladies
Conference
Room
Office
Office
Office Office
Office
.....
.....
.....
OFFICE
ENTRY
TODDLERS
INFANTS
STAFF /
OFFICE /
LOUNGE
NAP ROOM
LAUNDRY
KITCHEN
.....
.....
.....
.....
.....
.....
.....
.....
.....
DAY CARE

- 9 -
6.
LOCATIONS TO AVOID
NEAR A COOKING AREA: Do not install the monitor within five feet of any cooking
appliances. CO may be generated in the cooking process and cause nuisance alarms.
Also, cooking grease can build up on the monitor and cause monitor failure. Any monitor
that is installed near a commercial cooking area should be cleaned at least once every
month, or more frequently if needed.
WITHIN FIVE FEET OF A FURNACE, BOILER, WATER HEATER, OR SPACE
HEATER: These devices often spill out small amounts of CO when they first turn on.
IN GARAGES: Automobile exhaust contains CO and will activate alarm.
IN DUSTY AREAS: Dust can build up on monitor and prevent it from working properly.
IN CLEANING SUPPLY ROOMS: Cleaning chemicals and painting supplies may cause
nuisance alarms.
IN UTILITY OR BATH ROOMS: Do not install the monitor inside or within three feet of a
room with a bathtub, shower, spa or washer/dryer. Excessive moisture may cause
nuisance alarms.
IN VERY HOT OR COLD AREAS: Do not install monitor onto any exterior wall or within
areas which are below 40
o
F or above 100
o
F.
IN DEAD AIR SPACE: Do not install monitor within one foot of where wall meets ceiling
or floor.
IN HAZARDOUS LOCATIONS: This monitor is not suitable for installation in a
hazardous location, as defined in the National Electrical Code.
NEAR WIRELESS DEVICES: Do not install the monitor within one foot of wireless
devices. Radio Frequencies (RF) may interfere with the CO monitor’s proper operation.
7.
INSTALLATION INSTRUCTIONS
Follow these steps in this order to install the monitor:
1. Review Section 5, RECOMMENDED LOCATIONS OF MONITORS
2. Review Section 6, LOCATIONS TO AVOID
3. Fasten the mounting plate to the wall at eye level. Slide monitor down onto mounting
plate. The monitor will be automatically activated.
4. It is important that you use the mounting plate provided. If the mounting plate is not
used, you must slide the activation switch at the back of monitor to the left until it
meets the Stop, or ON position, as in diagram (B).
5. Once activated, the CO monitor should operate for up to five years without battery
replacement.
6. Press and hold test button until monitor starts to beep, then release. The monitor
should beep 4 times, pause, and then beep 4 times again. ALARM red LED should
flash at the same time.
7. Secure monitor to mounting plate, with Phillips head screw provided, through the
mounting hole on top of monitor.
8. Be sure that the monitor is not obstructed by furniture, drapes, etc.

- 10 -
Mounting hole is closed when
switch is in initial position
(A) Activation switch is not initially in ON position
Mounting hole is open when
switch is in ON position
(B) Monitor is activated when switch is in ON position
If the activation switch is not set to ON position, as in diagram (A), the mounting hole at
top of monitor will be blocked, and the CO monitor will not be activated.
The Defender LL6170 is a sealed lithium battery powered wall mounted Low Level CO
Monitor. Two lithium battery cells are permanently sealed with soldered connections, and
cannot be removed. No battery replacement is required, and the factory sealed batteries
should power the monitor for up to five years under normal operation.

- 11 -
8.
FUNCTIONS AND OPERATION
OPERATION: The CO monitor is operational once the activation switch is slid to ON
position. If the monitor’s power is active, the LCD readout will continuously display 0
PPM, or the current CO level if 5 PPM or more is detected.
LOW BATTERY CONDITION: When battery power drops to a low voltage level, the
monitor will chirp once per minute, POWER green LED will flash once every minute, and
LCD will display symbol. The monitor will continue to operate for up to one more
month, or until battery voltage is too low. See Section 13 for information regarding
service.
SERVICE CONDITION: An internal microcontroller continuously monitors the sensor
function and other critical components. If an internal failure of any of these components
should occur, the monitor will chirp twice ( BEEP - BEEP ) per minute, SERVICE red LED will
flash twice at the same time, and LCD will continuously display . This malfunction
condition indicates a problem with the unit. See Section 13 for information regarding
service.
SENSOR END-OF-LIFE CONDITION: The electrochemical sensor has a five year
service life. Once the batteries are activated, a microcontroller monitors the total time
that the monitor is under power. After five years of service, the “End-of-Life” signal will
be activated to indicate that the sensor life has expired and the monitor must be
replaced; the LCD will continuously display , monitor will chirp once per minute and
SERVICE red LED will light for 1 second at the same time. See Section 13 for handling
an End-of-Life signal.
ALARM CONDITION: When the batteries are active, and CO gas is detected at a level
and duration specified in Section 3, the horn will sound 4 short beeps every minute for
CO levels detected between 15-24 PPM, or every 6 seconds if over 24 PPM. The
ALARM red LED will flash in sync with the beeping sound, and the LCD will display the
current CO level detected. After having alarmed for 5 minutes, the alarm signal will
change to 4 short beeps every 60 seconds for CO levels detected between 15-149 PPM,
or every 20 seconds for CO levels detected of 150 PPM or more. The alarm signal is
either manually or automatically reset. See Section 10 WHAT TO DO WHEN THE ALARM
SOUNDS.
TEST/RESET/MUTE BUTTON: The TEST/RESET/MUTE button is one button for three
functions. It is used as a TEST button to check the monitor for proper operation, Reset
button to suspend or cancel flashing ALARM red LED, and MUTE button to temporarily
silence horn when an alarm, “Low Battery Voltage” ( ), or “End-of-Life” ( ) signal is
activated. The MUTE feature is disabled when alarm is activated at CO levels of 150
PPM or more. See Section 9 for detailed instructions to test the monitor and mute the
audible horn.
LCD DISPLAY FUNCTION: When monitor is operating normally, the LCD will display 0
PPM or the current CO level if 5 PPM or more is detected. Above 500 PPM, the LCD will
flash “500 PPM”. The LCD will display symbol if batteries have low voltage.

- 12 -
DISPLAY MEMORY BUTTON: To manually display the highest CO level detected,
press the DISPLAY MEMORY button once. The LCD will display the recorded data in the
following order:
1. The highest (peak) CO level detected within the last 30 days from 5 to 500 PPM.
2. The total length of time the highest CO level was detected, within 10% of the peak,
from 1 to 999 minutes.
Each reading will appear for five seconds. To erase the record in memory, press the
DISPLAY MEMORY button, and, while the readings are being displayed, press the
TEST/RESET/MUTE button. The monitor will burst a long beep, and display .
9.
TEST
AND MUTE MONITOR
To test the monitor, place the palm of one hand over the horn opening to dampen the
test signal, and press the TEST/RESET/MUTE button on the cover and hold it down for a
minimum of 2 seconds, or until the monitor starts beeping and ALARM red LED flashes,
then release. This test will simulate a CO concentration of approximately 100 ppm CO
gas. If all of the electronic circuitry and buzzer are working correctly, the monitor will
sound 4 short beeps and flash ALARM red LED at the same time, followed by a 6 second
pause, and then repeat 4 more short beeps with flashing ALARM red LED. The test
function is disabled when monitor is in SERVICE condition.
To mute the audible horn during an alarm signal, press the TEST/RESET/MUTE button.
The ALARM red LED will flash 4 times, display will read for 5 seconds, and horn will
be temporarily silenced. The audible alarm signal will be automatically reactivated within
8 hours if a CO level of 15-24 ppm continues to be detected, or within 5 minutes if 25
ppm or more. The alarm mute feature is disabled at CO levels of 150 PPM or more. See
Section 10 WHAT TO DO WHEN THE ALARM SOUNDS.
To mute the audible horn during a low battery signal ( )condition, press the
TEST/RESET/MUTE button. The POWER green LED will flash once, monitor will display
at the same time, and horn will be temporarily silenced for 24 hours. The POWER
green LED will continue to flash once every minute, LCD display ,and readout
display current CO level if 5 PPM or more is detected. When the audible signal
reactivates, you can continue to mute the horn for an additional 24 hour period by again
pressing the TEST/RESET/MUTE button. The horn can only be turned off during the first
7 days of a low battery signal activation. After 7 days, the monitor will return to its
normal low battery signal condition; 1 chirp per minute, POWER green LED flash once
per minute, continuously displays .
To test the monitor during a low battery signal condition, press and hold
TEST/RESET/MUTE button for minimum 2 seconds when audible signal is not sounding.
To mute the audible signal during an “End-of-Life” condition, press the
TEST/RESET/MUTE button. The SERVICE red LED will light for 1 second, monitor will
display at the same time, and horn will be temporarily silenced for 60 hours. When
the audible signal reactivates, you can continue to mute the horn for an additional 60
hour period by again pressing the TEST/RESET/MUTE button. The horn can only be

- 13 -
turned off during the first 30 days of the “End-of-Life” signal activation. After 30 days, the
monitor will return to its normal “End-of-Life” condition; 1 chirp per minute, SERVICE red
LED lights for 1 second at the same time, and continuously displays “End”. To test the
monitor during an “End-of-Life” condition, press and hold TEST/RESET/MUTE button for
minimum 2 seconds when audible signal is not sounding.
The audible signal cannot be muted when monitor is in SERVICE condition; monitor
chirps twice ( BEEP - BEEP ) per minute, SERVICE red LED flashes twice at the same time,
and continuously displays . See Section 13 for information regarding service.
10.
WHAT TO DO WHEN THE ALARM SOUNDS
If alarm signal sounds:
1) Operate TEST/RESET/MUTE button;
2) Call your emergency services (tel. no. _______________________________)
[fire department or 911];
3) Immediately move to fresh air - outdoors or by an open door or window. Do
a head count to check that all persons are accounted for. Do not re-enter the
premises or move away from the open door/window until the emergency
services responders have arrived, the premises have been aired out, and the
monitor remains in its normal condition.
4) After following steps 1- 3, if the alarm reactivates within a 24 hour period,
repeat steps 1-3 and call a qualified appliance technician:
(telephone no. ___________________________________________________)
to investigate for sources of CO from fuel burning equipment and
appliances, and inspect for proper operation of this equipment. If problems
are identified during this inspection, have the equipment serviced
immediately. Note any combustion equipment not inspected by the
technician and consult the manufacturers' instructions, or contact the
manufacturers directly, for more information about CO safety and this
equipment. Make sure that motor vehicles are not, and have not been,
operating in an attached garage or adjacent to the building.
MANUAL RESET: You can temporarily silence an audible alarm signal by pressing the
TEST/RESET/MUTE button. The ALARM red LED will flash 4 times and display will read
for 5 seconds. The LCD will then continue to display the current CO level detected
from 5 to 500 ppm, and ALARM red LED will flash 4 times every minute. The audible
alarm signal will be automatically reactivated within 8 hours if a CO level of 15-24 ppm
continues to be detected, or within 5 minutes if 25 ppm or more. Do not wait to see if the
alarm is reactivated; follow above instructions immediately. The alarm mute feature is
disabled at CO levels of 150 PPM or more.
AUTOMATIC RESET: If a CO alarm activation is not manually reset, the horn will sound
for at least 5 minutes. After 5 minutes, the alarm horn will automatically reset itself and
return to normal operation if the CO level drops below 9 PPM. The flashing ALARM red
LED will not automatically reset and must be manually cancelled or suspended, by

- 14 -
pressing the Test/Reset/Mute button, so that a supervisor or head of household will be
alerted that an alarm was activated earlier.
If building has been temporarily vacant and you return to find a monitor sounding,
do not enter building. Call Fire Department from another location. Do not re-enter
the building for any reason until you have been assured that it is safe to do so.
Conditions which can result in transient CO situations:
1) Excessive spillage, venting malfunctions, or reverse venting of fuel burning
appliances caused by outdoor ambient conditions, such as:
i) Wind direction and/or velocity, including high gusts of wind. Heavy air in
the vent pipes (cold/humid air with extended periods between cycles).
ii) Negative pressure differential resulting from the use of exhaust fans.
iii) Simultaneous operation of several fuel burning appliances competing for
limited internal air.
iv) Vent pipe connections vibrating loose from furnaces, boilers, water
heaters, clothes dryers, etc.
v) Obstructions in or unconventional vent pipe designs which can amplify
the above situations.
vi) Poorly designed or maintained chimneys and/or vents.
2) Extended operation of unvented fuel burning devices (range, oven, etc.).
3) Temperature inversions which can trap exhaust gases near the ground.
4) Car idling in an open or closed attached garage, or near the building.
If SERVICE or low battery signals are activated, see Section 13 for service and
return instructions.
11.
LIMITATIO
NS OF CARBON MONOXIDE MONITORS
Carbon monoxide monitors respond to the presence of CO. They do not detect smoke.
If the alarm does activate, follow instructions in Section 10 WHAT TO DO WHEN THE
ALARM SOUNDS.
Carbon monoxide monitors are devices that can provide an early warning of the
presence of CO gas at a reasonable cost. However, monitors have sensing limitations
and may not always sound a warning in the presence of CO. The monitor will not
operate if the battery power is too low or dead. CO monitors must be tested regularly to
ensure that they are receiving power and operating properly. Carbon monoxide monitors
cannot sense CO that does not reach the monitor, and therefore CO monitors may not
detect CO which is in another area of the building. Furthermore, if the monitor is located
on a different level of the building, or on the other side of a closed door, it may not alert
the occupant. The use of drugs and alcohol may impair one’s ability to hear the alarm. If
you have a multi-level building, install CO monitors on each level. If the monitor is
installed in a hallway and an occupied room’s door is kept closed, also install a CO
monitor within that room.
Although CO monitors can help save lives by providing an early warning to the presence
of carbon monoxide, they are not a substitute for an insurance policy. Property owners,

- 15 -
leaseholders and renters should have adequate insurance to protect everyone’s health,
lives and property.
12.
GOOD SAFETY HABITS
DEVELOP AND PRACTICE A PLAN OF ESCAPE:
Make a floor plan indicating all doors and windows and at least two escape routes from
each room within the building.
Have a meeting with everyone to discuss your escape plan, and show what to do in case
an alarm sounds.
Determine a place outside the building where you can all meet if an alarm sounds.
Familiarize everyone with the sound of the alarm and train them to leave the building
when they hear it.
Practice a CO fire drill at least once every six months. Practice allows you to test your
plan before an emergency. You may not be able to reach everyone. It is important that
they all know what to do.
Discuss the symptoms related to CARBON MONOXIDE POISONING with everyone.
(See Section 4 WHAT ARE THE SYMPTOMS OF CARBON MONOXIDE POISONING?)
13.
MONI
TOR END
-
OF
-
LIFE AND SERVICE
After the monitor has been activated for five years, the monitor reaches the end of its life
and emits the End-of-Life signal. The monitor will chirp once per minute, SERVICE red
LED will light for 1 second at the same time, and LCD will continuously display . The
monitor must be replaced once the End-of-Life signal has been activated. See below
procedures to remove and deactivate the monitor, and discharge the batteries. The
monitor can be disposed of using the same method for disposing of discharged batteries.
Should the low battery voltage signal occur in less than five years after initial activation,
the battery power capacity may be low because of long-term storage prior to installation,
exposure to low or high temperatures or high humidity during storage or operation, or
abnormal usage. If the low battery voltage signal is activated in less than three years
under normal conditions, press the TEST/RESET/MUTE button to mute the audible low
battery voltage signal, and place the monitor in an environment at 68
o
F or warmer. If the
low battery voltage signal resumes within 24 hours, follow the steps below to deactivate
the monitor, and the instructions listed on the last page of this Owner’s Manual to return
the unit for warranty service.
In the event of any malfunction of the unit, the monitor will chirp twice per minute,
SERVICE red LED will flash twice every minute, and LCD will continuously display .
Do not attempt to repair the monitor. This product should be serviced by a qualified
service technician. Follow the steps below to deactivate the monitor, and the instructions
listed on last page of this Owner’s Manual to return the unit for warranty service.

- 16 -
To remove the monitor for service or disposal, unscrew the mounting screw from the
top center of the monitor, and slide the monitor up and off mounting plate.
Insert a small flat-head screwdriver into the slot, pry out the deactivation Stop, and
slide the switch to farthest left end to deactivate the monitor. The switch moves in
one direction only, and cannot be moved back. Once monitor is deactivated, the
sealed lithium batteries will be fully discharged and the monitor will no longer work.
Insert a small flat-head screw
driver into the slot to pry out
the deactivation STOP
(C) Monitor is activated and “ON” when switch is at STOP
and mounting hole is open
Mounting hole is closed when
switch is slid to . Deactivate
(D) Monitor is permanently deactivated when switch moved to left past STOP
and mounting hole is closed

- 17 -
14.
DESCRIPTIO
N OF AUDIBLE AND VISUAL SIGNALS
Condition LCD Readout LEDs Horn
CO monitor is
operational
Continuously displays 0
PPM All LEDs are off Silent
CO gas alert Displays current CO level
detected (see page 5)
ALARM red LED flashes 4
times every minute Silent
CO gas alarm
Displays current CO level
detected (see page 5 for
more information about
CO display levels)
ALARM red LED flashes 4
times in synchronous with
horn
Beeps 4 times, pauses for 5
or 60 seconds. Repeats this
pattern for first 5 minutes,
then pause time changes to
60 seconds (20 seconds if
CO is 150 PPM or more)
Suspend CO alert
visual signal
Displays for 5
seconds, then current CO
level detected
Flashing ALARM red LED
suspended for 8 hours Silent
Mute CO alarm
audible signals
under 150ppm
Displays for 5
seconds, then current CO
level detected
ALARM red LED continues
to flash 4 times every minute
Silent for 8 hours if under 25
PPM, or 5 minutes if 25
PPM or more
Testing monitor Displays 0 PPM or
current CO level detected
ALARM red LED flashes 4
times in synchronous with
horn
Beeps 4 times, pauses for 5
seconds, then beeps 4
times again
Display Memory
Displays highest CO level
detected, and duration of
peak level. Each readout
lasts 5 seconds
None Silent
Clear Peak
Memory Displays None Bursts a long beep
Low battery
voltage Displays
symbol POWER green LED flashes
once every minute Chirps once per minute
Mute “low battery
voltage” audible
signal
Displays for 5
seconds, then
symbol and 0 PPM or
current CO level detected
POWER green LED flashes
once every minute
Silent for 24 hrs during the
first week
“End-of-Life” Continuously displays
SERVICE red LED lights for
1 second every minute Chirps once per minute
Mute “End-of-Life”
audible signal
Displays for 5
seconds, then
SERVICE red LED lights for
1 second every minute
Silent for 60 hrs during the
first month
Service required Displays
continuously
SERVICE red LED flashes
twice every minute
Chirps twice (BEEP-BEEP)
per minute

- 18 -
15. THREE-YEAR LIMITED WARRANTY
The Defender carbon monoxide monitors are manufactured in Canada under stringent ISO
9001 quality management practices. The manufacturer warrants that, for a period of three
years from the date of purchase, this carbon monoxide monitor will be free from defects in
material and workmanship, and the factory sealed lithium batteries will power the CO
monitor for at least three years. The manufacturer, at its option, will repair or replace this
product or any component
of the product found to be defective during the warranty period.
Replacement will be made with a new or re-manufactured product or component.
If the product is no longer available, replacement may be made with a similar product of
equal or greater value. This warranty is valid for the original retail or end-user purchaser
from the date of initial purchase from an authorized distributor, dealer or contractor, and is
not transferable. Keep the original sales receipt. Proof of purchase is required to obtain
warranty service. Distributors, dealers or contractors selling Defender products do not have
the right to alter, modify or in any way change the terms and conditions of this warranty.
This warranty does not cover normal wear of parts or damage resulting from any of the
following: improper storage, negligent use or misuse of the product, use contrary to the
operating instructions, operation in unconditioned space (below 40°F or above 100°F),
disassembly, or repair or alteration by anyone other than the manufacturer or an authorized
service center. Further, the warranty does not cover acts of God, such as fire, flood,
earthquakes, hurricanes and tornadoes.
The manufacturer shall not be liable for any incidental or consequential damages caused by
the breach of any express or implied warranty. Except to the extent prohibited by applicable
law, any implied warranty of merchantability or fitness for a particular purpose is limited in
duration to the duration of the above warranty. Some states or jurisdictions do not allow the
exclusion or limitation of incidental or consequential damages or limitations on how long an
implied warranty lasts, so the above limitations or exclusion may not apply to you. This
warranty gives you specific legal rights, and you may also have other rights that vary from
state to state.
Warranty Service:
If service is required, do not return the product to your supplier. Contact our U.S.
manufacturer’s representative at [phone], Monday through Thursday, from 7 AM to
4 PM PST to obtain a Return Authorization (RA) number. To assist in serving you, please
have the model number, serial number, and date of purchase available when calling. An
original sales receipt is required for warranty service.
Prior to returning, deactivate the monitor per the instructions in Section 13, pack carefully in
a padded box, and ship freight prepaid with your original sales receipt, an explanation of the
problem, and your return address.
R
www.defenderdetectors.com