18
Ambient light Sensing
In low light ambient conditions, the green LED ring fades to off, and then blinks approx every 60 seconds. This unit sam-
ples the ambient light conditions of the alarm’s location and, if possible, determines a Night / Day cycle. A valid Night /
Day cycle will delay unit chirps during the night until the next Day cycle begins.
When chirping begins during the next Day cycle, you can temporarily silence End of Unit Life chirps by pressing the
Test/Hush® button. Low Battery chirps cannot be silenced. If a valid Night / Day cycle has not been established because
the unit is located in either a constantly dark or lighted location, the chirps mentioned above will not be delayed at
night. Moving the unit to a different location might allow the unit to determine a valid Night / Day cycle.
wArnIng: replAce UnIt AS SOOn AS pOSSIble wHen In end Of UnIt lIfe Or lOw bAttery MOde.
11. Recognizing Nuisance Alarms
Smoke nuisance
HUSH®:
If you know why the alarm is sounding, and you can verify that it is not a life threatening situation, you can push the
button on the initiating unit (green LED flashing every second) to silence the alarm for 8-10 minutes. If the smoke is not
too dense, that unit, and all interconnected units will silence. After the Hush® period, the smoke alarm will automatically
reset and sound the alarm if particles of combustion are still present. You can use Hush® repeatedly until the air has been
cleared of the condition causing the alarm.
nOte:
Dense smoke will override Hush® and sound a continuous alarm. If no fire is present, check to see if
one of the reasons listed in “Locations to avoid” may have caused the alarm. If a fire is discovered, get out and
call the fire department.
