BRK electronic CO2120PN - Manual (Page 4)

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HOW YOUR CO ALARM WORKS
General Information
CAUTION!
Leave your CO Alarm plugged in year-round.
CO problems can occur any time during the
year, and this alarm can only alert you if it is
plugged in and receiving power.
This CO Alarm is intended for use in a standard,
unswitched 120V AC wall outlet. It is not
intended for use in extension cords, power
strips, or outlets controlled by a switch or
dimmer. These may not provide continuous
power to the unit.
When fully powered, it samples the air and
takes a new reading about every second. A
microchip inside the unit stores each reading,
and remembers the levels of CO it has been
exposed to over time. The unit goes into alarm
mode when it has been exposed to a “critical”
level of CO (measured in parts per million or
“ppm”) within a specified time (measured in
minutes).
This Carbon Monoxide Alarm features a
permanently installed sensor, three colored
indicator lights, and an 85 dB alarm horn. It
also has a silence feature to temporarily quiet
the alarm horn.
The Cover Of Your CO Alarm
Malfunction Warning
This unit performs self-diagnostic tests
approximately every second. If the Alarm
malfunctions, it should be replaced immediately.
1 Test/Silence Button
2 POWER Light (Green)
3 SERVICE Light (Yellow)
4 ALARM Light (Red)
5 Air Vents
6 (Behind the Cover) Alarm Horn: 85db
audible alarm for test, alarm, and unit
malfunction warning