Note: If you will be staining or stripping wood floors or furniture, paint-
ing, wall-papering, or using aerosols or adhesives for a do-it-yourself
project or hobby, before you begin:
Remove the alarm to a remote location to prevent possible damage to
or contamination of the sensor. You may wish to unplug the alarm and
store in a plastic bag during the project.
The following is a list of substances that at high levels can affect the
sensor and cause an alarm.
Methane, propane, iso-butane, ethylene, ethanol, alcohol, carbon
monoxide, iso-propanol, benzene, toluene, ethyl acetate, hydrogen,
hydrogen sulfide, sulfur dioxides.
Most aerosol sprays, alcohol based products, fresh paint, thinner, sol-
vent, adhesive, hair spray, aftershave, perfume, auto exhaust (cold
start) and some cleaning agents.
The Peak Level Memory Button
This feature alerts you to possible CO events in your absence. If the
CO sensor has detected a CO level of 50 PPM or higher since it was
last reset, it will be recorded by the Peak Level Memory function. To
access the Peak Level Memory press the Peak button. If a reading of
50 PPM or higher has been recorded, the unit will beep 8 times. If
you’ve been away from home this feature allows you to check if there
was a CO incident during your absence. Push and hold the Peak but-
ton while pressing the Test button to reset the memory. It is also reset
when the power is removed.
Once the source is located, correcting the problem may be as easy as
opening a window, venting an appliance, backing a car out of the
garage a safe distance from living quarters, closing the garage door,
and letting the car warm up outside. It could be possible that a weather
condition caused the reading and the condition may or may not happen
again. DO NOT ignore an alarm. Refer to “Part 4- What to Do When
the Alarm Sounds for Carbon Monoxide” for more details.
To Reset the Peak Level Memory…
Step 1. Press and hold the peak level button.
Step 2. With the peak level button still pressed, press the test/reset but-
ton for two seconds and release.
The memory has now been cleared and the alarm will return to moni-
toring for CO within a few minutes.
Normal Operation
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