C. Smoke Detector Operating Modes
The LED light on the front of the Smoke/CO Detector indicates the operating
mode of the unit:
Red LED blinks 3 times rapidly: the Smoke/CO Detector has sensed a
potentially dangerous level of smoke and is in smoke alarm mode. The
buzzer and alarm siren will also sound. Please follow the "in case of fire"
instructions.
Green LED blinks about once per minute: the Smoke/CO Detector is
functioning normally.
Yellow LED blinks AND chirps once per minute: the Smoke/CO Detector
battery is low. This low battery warning signal should last for up to 30 days,
but you should install two new CR123A 3V lithium batteries immediately.
Yellow LED blinks once and chirps 2 times every minute: this indicates the
Smoke/CO Detector is in low sensitivity and needs to be cleaned.
Yellow LED blinks twice and chirps 2 times every minute: this indicates the
Smoke/CO Detector is in high sensitivity and needs to be cleaned.
Yellow LED blinks once and chirps 3 times every minute: this indicates the
Smoke/CO Detector is no longer operating within its intended sensitivity and
must be replaced.
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D. CO Detector Operating Modes
If CO alarm signal sounds on the Smoke/CO Detector:
(1) Operate reset/silence button
(2) Call 911 or your local fire department
(3) Immediately move to fresh air
Green LED Flashes: the Smoke/CO Detector is turning on.
Green LED flashes once every 50 seconds: the Smoke/CO Detector is in
Standby which means the unit is receiving power and also indicates it is
functioning properly.
Red LED light flashes rapidly and the buzzer sounds loudly with repeating 4
quick beeps and pauses for 5 seconds and then 4 quick beeps: the Smoke/
CO Detector is in CO Alarm Mode. After 4 minutes of an alarm, the pause will
increase to 60 seconds.
Yellow LED blinks AND chirps once per minute: the Smoke/CO Detector
battery is low. This low battery warning signal should last for up to 30 days,
but you should install two new CR123A 3V lithium batteries immediately.
Yellow LED flashes two times a minute and buzzer chirps once a minute:
this indicates the Smoke/CO Detector is malfunctioning and needs to be
replaced.
Yellow LED flashes four times a minute and buzzer chirps once a minute: this
indicates the detector is reaching the end of its useful life (10 years after the
unit was manufactured).
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