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Whenever the alarm is operating, the green Power LED flashes every 60
seconds to indicate the unit is monitoring for CO. If the alarm senses
dangerous levels of CO, the red Alarm LED will flash and the alarm will
emit an audible alarm pattern.
5. Model KN-COB-LP2 Operating Characteristics
Operating and Alarm Characteristics
Function LED Display Alarm Sound Unit Status Recommendation
Normal
Operation
Green LED
flashes every 60
seconds
None Normal DC
operation (sensing
no CO) and with
good batteries
None
Carbon
monoxide
alarm
Red LED flashes
with beeps.
4 quick beeps,
5 seconds
silence,
repeating
Alarm condition.
Dangerous con-
centrations of CO
detected
Refer to “What to
do When the Alarm
Sounds” (inside front
cover)
Low
battery
Red LED flashes
every 60 seconds
One quick
beep every
60 seconds
Batteries need to be
replaced
Replace all AA
batteries
Error /
service
alarm
Red LED flashes
every 30 seconds
One quick
beep every
30 seconds
Unit is in error
condition
Error Red LED
constantly on
Constant
alarm
Very low battery or
unit malfunction
Replace batteries .
If condition continues,
unit has malfunc-
tioned. Replace
immediately. Unit will
not respond to CO
Normal
Test/Reset
function
Red LED flashes
with beeps.
4 quick beeps,
5 seconds
silence,
repeated once
Normal operation
when Test/Reset
button is pressed
CO not detected.
Alarm for test pur-
poses only
End of
unit life
indicator
Red LED flashes
two times
every 30 seconds
Two quick
beeps every
30 seconds
End of unit life
Replace unit imme-
diately. Unit will not
respond to CO
Event
Memory
Green LED
flashes every
10 seconds
None
100ppm or more
CO previously
detected
Push button to clear
and test unit.
6. Alarm Characteristics
Carbon Monoxide Alarm Indicator
When the alarm senses a dangerous level of CO, the unit will emit a
loud alarm pattern. The alarm pattern is 4 quick beeps followed by 5
seconds of silence, repeating for as long as dangerous conditions exist.
The red Alarm LED will flash the same pattern.
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