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5. Alarm Characteristics
WARNING: When powered by battery backup only; after four minutes,
this alarm pattern occurs only every 60 seconds, until the alarm is reset
or the CO is eliminated.
• The digital display will show a the PPM of CO or show “GAS” only if
it senses carbon monoxide or gas while in backup mode.
• If gas is detected while on battery backup, the unit will display “GAS”
and alarm in 1/2 second beeps. For the first four minutes after the
unit goes into battery backup operation, the explosive gas sensor will
operate as if on AC power.
However, after four minutes, to extend battery life, the unit will go into
battery conserve mode and will only sample for explosive gas once every
eight minutes. Explosive gas could be present during this 8-minute peri-
od without the unit going into alarm. If the alarm is on battery backup
for an extended period of time, replace the battery to ensure maximum
protection is provided. The battery will last only a couple hours in a gas
alarm condition.
WARNING: If at any time you test the alarm and it does not perform as
described, have it replaced immediately.
Whenever the CO and Gas alarm is first powered up, it will sound briefly
to let you know it is receiving power and that the alarm is functioning.
You will see three eights on the digital display, indicating the alarm is in
the start-up mode. The three eights will remain for approximately 20
seconds. You will see a blinking red dot to the lower right of the digital
display. The blinking dot shows that the alarm is operating.
Within 20 seconds, your CO and Gas alarm will start monitoring for CO.
Within 2 minutes your alarm will start monitoring for gas. This alarm will
display a 0 if CO concentrations between 0 and 30 PPM have been
detected within the last 15 seconds. The alarm has begun monitoring
the air for CO and gas and will continue to as long as it receives power.
When the alarm is unplugged or loses power and a good 9V bat-
tery is installed: The alarm will automatically switch to its battery back-
up mode and you will notice the following:
• After 4 minutes the digital display will show a blinking dot only – this
helps conserve the battery’s power.
6. Model KN-COEG-3 Operating Characteristics
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