Features And Operation; Digital Display - Shows Co Level In Ppm - Kidde 900-0259 User Manual

Features and Operation of Digital Display Model
Your new Kidde Battery Powered CO Alarm utilizes sophisticated
electronic components to protect you and your family from the
dangers of CO.
Unique features include a digital display capable of displaying CO
concentrations in (PPM) Parts Per Million and the highest levels
of CO detected. Familiarize yourself with these features:
Digital Display Backlight Feature
To help see the displayed reading in the dark, a backlight appears
when the peak level button is pressed.

Digital Display - Shows CO level in PPM

Your Kidde CO alarm continuously displays a digi-
tal readout of the CO level in Parts Per Million
(PPM). The digital display is capable of detecting
and displaying readings between 30 and 999 (PPM).
A reading of 0 PPM is expected under normal conditions
You will become accustomed to glancing at the display in much
the same manner as you look at a thermometer or clock. The
unit will not automatically display a reading below 30 PPM.
However, readings between 11 and 999 PPM will be stored in the
Peak Level Memory.
Other Possible Displays and Their Meanings
The following symbols will appear on the display during normal
or error operations, and are explained below.
Normal Operation
Normal operation with a full battery. The dot in the
lower right corner cycles on and o every 5 sec-
onds. If CO is present the display will indicate the
reading in Parts Per Million (PPM).
Normal Operation following Power-up or Reset
The gure at the right shows the normal display
immediately after installing batteries or after the
test/reset button is pressed. The display will
change to the normal display approximately 30
seconds after pressing the test/reset button.
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