BRK electronic CO5120PDB Using The Silence Feature, It Means, While the CO Alarm is silenced

Display Shows...	It Means...
30	Developing CO problem. Display will
(or higher)	only show levels of carbon monoxide
	30 ppm or higher.
70	The unit is calibrated to sound an alarm
(or higher)	before 240 minutes have passed when
	exposed to this level.
150	The unit is calibrated to sound an alarm
(or higher)	before 50 minutes have passed when
	exposed to this level. At this level, an
	average healthy adult may feel a
	headache within 90 minutes.
400	The unit is calibrated to sound an alarm
(or (higher)	before 15 minutes have passed when
	exposed to this level. This level may be
	life threatening to a normal healthy
	adult within three hours.
A number higher	Over 450 ppm has been detected.
than 450	Evacuate immediately!

USING THE SILENCE FEATURE

NEVER disconnect the power to your CO Alarm to silence the horn—use the silence feature. Disconnecting the CO Alarm removes your protection! See previous page for details on responding to an alarm.

The Silence feature is intended to temporarily silence your CO Alarm’s alarm horn while you correct the problem—it will not correct a CO problem. While the alarm is silenced, it will continue to monitor the air for CO. When CO reaches the “Alarm” level, it will sound— repeating horn pattern: 4 beeps, a pause, 4 beeps, etc. Press and hold the Test/Silence button until the horn is silent. The Silence cycle will last approximately 4 minutes.

To silence an interconnected series of Alarms, you must press the Test/Silence button on the initiating alarm (the unit with the flashing red light). If you press the Test/Silence on any other Alarm, it will only silence that unit, not the whole interconnected series.

NOTE: After the 4-minute silence cycle, the CO Alarm re-evaluates present CO levels and responds accord- ingly. If CO levels remain potentially dangerous—or start rising higher—the horn will start sounding again.

While the CO Alarm is silenced:

If the CO Alarm...is silent for only 4 minutes, then starts sounding loudly—4 beeps, then a pause, 4 beeps, then a pause. Red light (LED) continues flashing...

This means...CO levels are still potentially dangerous.

If the CO Alarm...remains silent....

This means...unit has returned to normal operation.

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