Peak Level Display - Kidde 900-0259 User Manual

Features and Operation of Digital Display Model
If the test/reset button is pressed, the alarm will sound. The display
will show a number during the time that the alarm is sounding.
This number is a normal part of the test function, and does
not indicate a CO reading.

Peak Level Display

When the peak level button is pressed and held, the display
shows the highest CO reading taken by the CO
alarm since its last peak level reset or power-
up. The backlight will illuminate for several sec-
onds after the peak level button is pressed to
help you see the reading.
Although the peak level feature will display levels below 30 PPM,
these levels will not result in an alarm no matter how long the
device is exposed to these levels.
The peak level feature is helpful in identifying CO occurrences
below 30 PPM. Although the unit will not automatically display
levels below 30 PPM, it will detect and store these readings in
memory. By pressing the peak level button, concentration levels
as low as 11 and up to 999 PPM will be displayed.
Concentrations of CO between 0 and 30 PPM can often occur in
normal, everyday conditions. Concentrations of CO below 30 PPM may
be an indication of a transient condition that may appear today and
never reappear. Just a few examples of conditions and/or sources
that may cause readings blow 30 PPM are heavy automobile traf-
c, starting a vehicle i n an attached garage, an appliance that
emits CO when starting up, a re in a replace or charcoal in a nearby
barbecue. A temperature inversion can trap CO generated by tra c
and other fuel burning appliances causing readings of CO.
Some CO conditions may start out below 30 PPM but could
develop into CO concentrations that could become harmful. If this
happens, the CO alarm will detect the dangerous level and alarm,
notifying you and others of the conditions. DO NOT ignore high
concentration readings above 30 PPM or a CO alarming device
that is in alarm.
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