4. OPERATION AND TESTING
OPERATION:
The smoke alarm is operating once the alarm is
activated (see Section 3) and testing is complete. When products
of combustion are sensed, the unit sounds a loud 85db pulsating
alarm until the air is cleared.
SMART HUSH
®
CONTROL: The SMART HUSH
®
feature has the
capability of temporarily desensitizing the alarm circuit for
approximately 8 minutes. This feature is to be used only when a
known alarm condition, such as smoke from cooking, activates the
alarm. The smoke alarm is desensitized by pushing the button on
the smoke alarm cover. If the smoke is not too dense, the alarm
will silence immediately and the red LED will illuminate for 1 sec-
onds every 8 seconds for 7 to 9 minutes. This indicates that the
alarm is in a temporarily desensitized condition. The smoke alarm
will automatically reset after approximately 8 minutes and sound
the alarm if particles of combustion are still present. The SMART
HUSH
®
feature can be used repeatedly until the air has been
cleared of the condition causing the alarm. Pushing the button on
the alarm will end the temporarily desensitized period.
NOTE: DENSE SMOKE WILL OVERRIDE THE SMART HUSH
®
CONTROL FEATURE AND SOUND A CONTINUOUS ALARM.
CAUTION: BEFORE USING THE ALARM SMART HUSH
®
FEATURE, IDENTIFY THE SOURCE OF THE SMOKE AND BE
CERTAIN A SAFE CONDITION EXISTS.
FLASHING LED LIGHT:
This smoke alarm is equipped with a
flashing red indicator light with four modes of operation:
• The LED will flash every 40-45 seconds in the standby mode
signifying that the alarm is receiving power.
• The LED will flash every 1.5 seconds when the alarm is sound-
ing.
• The LED will illuminate for 1 seconds every 8 seconds while the
alarm is in the temporarily desensitized mode.
• If alarm memory has been set (see below for alarm memory
description), the LED will flash rapidly when the button is
pressed.
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