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WEEKLY TESTING
This alarm is designed to act as a monitor, not for use as a short-term testing device to
perform a quick check for the presence of CO or gas. WARNING: Natural gas (methane) is
highly explosive. An attempt to test the unit by exposing it to natural gas outside of a
controlled laboratory environment can produce an explosion and death. NEVER use a gas
range or an open flame of any kind to test this alarm. You might accidentally damage or set fire
to the alarm or to your home. NEVER use vehicle exhaust to test the alarm! Exhaust may cause
permanent damage and voids your warranty. The built-in test switch accurately tests the alarm
operation as required by ANSI/UL2034 and UL1484 Standards for Safety. If, at any time, you test
the alarm and it does not perform as described, replace it immediately.
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. The screen
will display "GAS" on digital display models. Then you will hear a loud 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
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 approx. 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.
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, most aerosol sprays including compressed gas dusters or any
other chemical on or near your alarm. AFTER CLEANING, REINSTALL YOUR ALARM. TEST
YOUR ALARM BY USING THE TEST/CO SILENCE 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:
Lithium type:
These batteries are available at many local retail stores.
(Digital Display Models Only):
REGULAR MAINTENANCE
Energizer 522; Duracell MN1604
Ultralife U9VL-J, U9VL-J-P; Energizer LA522
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