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UNDERSTANDING THE LIGHT AND HORN PATTERNS (CO5120BN), Continued
Condition LED (Red Light) Horn
ALARM CONDITION LED flashes once every second Horn pattern:
Single CO Alarm 4 beeps, pause,
(not interconnected) 4 beeps, pause,
repeating
ALARM CONDITION LED flashes rapidly on the units Horn pattern:
Interconnected that triggered the alarm. LEDs 4 beeps, pause,
Series of CO Alarms on the other Alarms in the series repeating on all
will not flash CO Alarms
IN SILENCE MODE LED flashes once every second Horn stays quiet
on initiating Alarm for 4 minutes
“LATCHING” ALARM LED Flashes once every Horn stays quiet
INDICATOR 5 seconds
MALFUNCTION LED flashes 3 times Horn sounds
synchronized with 3 rapid chirps 3 rapid chirps
(chirp-chirp-chirp)
every minute
DISPLAY CONDITIONS (CO5120PDBN)
Alarm operating on AC
power
Alarm operating on
emergency battery
back-up
Low / missing battery
warning
“Err” Alarm is not
operating properly
What you see and hear if CO is detected:
PRE-ALARM LEVELS :
HORN:
Silent
DISPLAY: Shows CO levels detected in ppm
(CO5120PDBN)
POWER/ALARM LIGHT: On continuously
ALARM LEVELS OF CO ARE DETECTED:
HORN:
Sounds loudly - 4 beeps, pause, 4 beeps,
pause. This sequence repeats for as long as the
unit is in alarm*
DISPLAY: Shows CO levels detected in ppm
(CO5120PDBN)
POWER/ALARM LIGHT: Flashes rapidly
*Note: If unit goes into alarm under battery back-
up power, the regular 4 beeps-brief pause cycle
will repeat for four minutes. After four minutes, the
pause will increase to 1 minute.
IF YOU SILENCE THE ALARM:
HORN:
Silent for about 4 minutes*
DISPLAY: Shows CO levels detected in ppm
(CO5120PDBN)
POWER/ALARM LIGHT: Flashes rapidly
*Note: After 4 minutes, if CO levels drop below
alarm levels, the unit will remain silent and return
to normal operation. If CO present still indicates a
potentially dangerous situation, the horn will
sound again.
IF THE CO LEVELS RETURN TO NORMAL:
HORN:
Silent
DISPLAY: Dash lit by “READY” (CO5120PDBN)
POWER/ALARM LIGHT: Shines continuously
SMART INTERCONNECT FEATURE
This CO Alarm includes “Smart Interconnect” which enables the Alarm to be interconnected with other BRK
Smoke and CO Alarms. When interconnected to Smoke Alarms that go into alarm, this CO Alarm will sound the
smoke horn pattern.
USING THE PEAK CO MEMORY (CO5120PDBN)
The CO Memory Feature lets you check the highest level of CO recorded during an alarm.
To check CO Memory:
1. Press and release the Test/Silence/Scroll button until the dash scrolls to “MEMORY”.
2. Press and hold Test/Silence/Scroll button to display Memory CO level.
To clear CO Memory:
1. Press and release the Test/Silence/Scroll button until the dash scrolls to “CLEAR MEMORY.”
2. Press and hold the Test/Silence/Scroll button until the display shows “CLr.”
NOTE: The highest CO level will be saved, even after a power interruption, until you clear it. DO NOT clear the
CO Memory reading if you plan to call someone to investigate a CO problem! Clear the CO Memory reading
only after the investigator has checked your home.
INSTALLATION
WHERE TO INSTALL CO ALARMS
The National Fire Protection Association (NFPA) recommends that a CO Alarm should be centrally located out-
side of each separate sleeping area in the immediate vicinity of the bedrooms. For added protection, install
additional CO Alarms in each separate bedroom, and on every level of your home.
If your bedroom hallway is longer than 40 feet (12 meters), install a CO Alarm at BOTH ends of the hallway.
In a Single-level Home:
• Install at least one CO Alarm near or within each separate sleeping area.
•
For added protection, install an additional CO Alarm at least 20 feet (6 meters), away from the furnace or
fuel burning heat source.
In a Multi-level Home–(same as above plus):
• Install at least one CO Alarm near or within each separate sleeping area.
• For added protection, install at least one CO Alarm on each level of the home. If you have a basement,
install that CO Alarm at the top of the basement stairs.
• For added protection, install an additional CO Alarm at least 20 feet (6 meters) away from the furnace or
fuel burning heat source.
GARAGE
SUGGESTED AREAS FOR INSTALLING ADDITIONAL CO ALARMS
BEDROOM
BEDROOM
HALL
LIVING ROOM
KITCHEN
BASEMENT
BEDROOM
REQUIRED TO MEET NFPA RECOMMENDATIONS
WHERE CO ALARMS SHOULD NOT BE INSTALLED
DO NOT locate this CO Alarm:
• In garages, kitchens, furnace rooms, or in any extremely dusty, dirty or greasy areas.
• Where combustion particles are produced. Combustion particles form when something burns. Areas to
avoid include poorly ventilated kitchens, garages, and furnace rooms. Keep units at least 20 feet (6 meters)
from the sources of combustion particles (stove, furnace, water heater, space heater) if possible. In areas
where a 20-foot distance is not possible – in modular, mobile, or smaller homes, for example – it is recom-
mended the CO Alarm be placed as far from these fuel-burning sources as possible. The placement recom-
mendations are intended to keep these Alarms at a reasonable distance from a fuel-burning source, and
thus reduce “unwanted” or “nuisance” alarms. Unwanted alarms can occur if a CO Alarm is placed directly
next to a fuel-burning source. Ventilate these areas as much as possible.
• Within 5 feet (1.5 meter) of any cooking appliance.
• In extremely humid areas. This Alarm should be at least 10 feet (3 meter) from a bath or shower, sauna,
humidifier, vaporizer, dishwasher, laundry room, utility room or other source of high humidity.
• In areas where temperature is colder than 40˚F (4˚C) or hotter than 100˚F (38˚C). These areas include non-
airconditioned crawl spaces, unfinished attics, uninsulated or poorly insulated ceilings, porches, and
garages.
• In turbulent air, like near ceiling fans, heat vents, air conditioners, fresh air returns, or open windows.
Blowing air may prevent CO from reaching the sensors.
• In direct sunlight.
• This CO Alarm is designed for use inside a single-family home or apartment. It is not meant to be
used in common lobbies, hallways, or basements of multi-family buildings unless working CO
Alarms are also installed in each family living unit. CO Alarms in common areas may not be heard
from inside individual family living units.
• This CO Alarm alone is not a suitable substitute for complete detection systems in places which
house many people, like hotels or dormitories, unless a CO Alarm is also placed in each unit.
• DO NOT use this CO Alarm in warehouses, industrial or commercial buildings, special-purpose
non-residential buildings, RVs, boats, or airplanes. This CO Alarm is specifically designed for
residential use, and may not provide adequate protection in non-residential applications.