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WEEKLY TESTING
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NEVER use an open flame of any kind to test this unit. You might accidentally damage or set
fire to the alarm or to your home. The built-in test switch accurately tests the unit's operation
as required by ANSI/UL2034 Standard for Safety. NEVER use vehicle exhaust! Exhaust may
cause permanent damage and voids your warranty.
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DO NOT stand close to the alarm when the horn is sounding. Exposure at close range may be
harmful to your hearing. When testing, step away when the horn starts sounding.
It is important to test this alarm every week to make sure it is working properly.
USING THE TEST FEATURE:
Press and release the TEST/CO SILENCE button on the alarm cover.
During testing, you will hear: 1 beep, one second pause, while the blue LED flashes. Then you will
hear a loud, repeating horn pattern: 4 beeps, while the red LED flashes.
If the alarm does not sound properly:
1. Make sure the AC power is applied and the battery is fresh and installed correctly.
2. Test the alarm again.
If the alarm is still not working properly, replace it immediately.
USING THE PEAK CO MEMORY
(Digital Display Models Only):
The CO Memory feature lets you check the highest level of CO recorded parts per million (ppm)
of carbon monoxide.
To check CO memory:
1. Press and release the PEAK/RESET button on the alarm cover. The peak CO level is displayed
on the screen.
To reset and clear peak CO memory:
1. Press and hold the PEAK/RESET button for 10 seconds until the peak CO memory reading is
cleared. The alarm will chirp once to indicate the reset is now complete. The screen will
temporarily display "000" when the peak CO level is reset and then return to "- - -" after several
seconds.
NOTE:
The highest CO level will be saved into memory until you clear it, even after a power
interruption. 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.
Natural gas levels will not display on the screen.
REGULAR MAINTENANCE
CLEANING YOUR ALARM:
DO NOT use spray cleaning chemicals or insect sprays directly on or near the alarm. DO NOT paint
over the alarm. Doing so may permanently damage the alarm.
The outside can be wiped with a damp cloth. Do not use any household cleaning agents, ammonia-
based cleaners, paints, varnishes or any other chemical on or near your alarm.
AFTER CLEANING,
REINSTALL YOUR ALARM. TEST YOUR ALARM BY USING THE TEST/RESET BUTTON.
BATTERY REPLACEMENT:
The CO/Gas alarm is powered (backup) by a 9 volt battery. The alarm has a low battery monitor
circuit which will cause the alarm to sound a short "chirp" approximately every 40 seconds, for a
minimum of 7 days, when the battery gets low. Replace the battery when this condition occurs.
While observing polarity, push the replacement battery into the battery compartment until it is held
securely in place. Carefully close the battery compartment cover.
USE ONE OF THE FOLLOWING 9 VOLT BATTERIES FOR REPLACEMENT:
Alkaline type:
Energizer 522; Duracell MN1604
Lithium type:
Ultralife U9VL-J, U9VL-J-P; Energizer LA522
These batteries are available at many local retail stores.
