Kidde KN-COB-IC Manual page 14

Testing
To test the alarm, press the Test/Reset button. If the unit is
operating properly, you should hear 4 quick beeps – followed
by 5 seconds of silence – followed by 4 quick beeps. The red
LED will flash along with the beeps and the amber LED will
illuminate. Within several seconds the unit will return to
monitor for carbon monoxide.
If interconnected to Kidde smoke alarms, pressing the
Test/Reset button on the CO alarm will have no effect on
the smoke alarms. The smoke alarms will not be tested
and will not alarm. However, when pressing the Test
button on an interconnected smoke alarm, the CO alarm
will emit a Smoke/Fire audible and visual alarm pattern of
3 long beeps, 1 second of silence, repeated. Note: You
do not need to press the Test button to take a CO reading.
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