BRK electronic CO5120B - Manual (Page 26)

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UNDERSTANDING THE LIGHT AND HORN PATTERNS (AC POWER ON)
When the CO Alarm is operating on AC power...
Condition LED (Red Light) Horn
POWER UP LED flashes ON once,
then shines continuously Horn “chirps” once.
DURING TESTING LED flashes once every second
during the 10-second test cycle Horn pattern: 4 beeps,
pause, 4 beeps, pause.
MISSING BATTERY
(DC back-up disabled) LED shines continuously Horn is silent.
LOW BATTERY LED shines continuously Horn “chirps” once a minute.
ALARM CONDITION
Single CO Alarm
(not interconnected) LED flashes rapidly,
once every second Horn pattern: 4 beeps,
pause, 4 beeps, pause,
repeating.
ALARM CONDITION
Interconnected
Series of CO Alarms LED flashes rapidly on the unit
that triggered the alarm. LEDs
on the other alarms in the series
will not flash. Horn pattern: 4 beeps,
pause, 4 beeps, pause
repeating, on all CO
alarms.
IN SILENCE MODE LED flashes rapidly,
once every second Horn stays quiet for 4 minutes.
“LATCHING” ALARM
INDICATOR LED flashes
once every 5 seconds Horn stays quiet.
MALFUNCTION LED flashes 3 times
synchronized with 3 rapid chirps Horn sounds 3 rapid chirps
(“chirp-chirp-chirp”) every
minute.