Installation Guide
7. NUISANCE AND HUSH
This Smoke alarm is designed to minimize nuisance alarms. Cigarette smoke will 
not normally cause the unit to alarm, unless the smoke is blown directly into the 
alarm. Combustion particles from cooking may set off the alarm if it is located 
too close to a cooking appliance. Large quantities of combustible particles are 
generated from spills or when broiling. Using the fan on a range hood which 
vents to the outside (non-recirculating type) will also help remove these combus-
tible products from the kitchen.
If the source of a smoke alarm (3 long beeps with the voice message "Fire!") is 
immediately known, you can use the Hush feature to silence the alarm for up 
to 10 minutes. 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.
SMART HUSH
TM 
 CONTROL: SMART HUSH
TM
 control is extremely useful in 
a kitchen area or other area prone to nuisance alarms. The SMART HUSH
TM
feature has the capability of temporarily desensitizing the alarm circuit for up to 
10 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 push-
ing the Test/Hush button on the smoke alarm cover. If the smoke is not too 
dense, the alarm will silence immediately with the voice message "Hush mode 
activated"and the red LED blinks every 10 seconds. This indicates that the alarm 
is in a temporarily desensitized condition. 
The smoke alarm will automatically reset after up to 10 minutes and sound the 
alarm if particles of combustion are still present. 
The SMART HUSH
TM
 feature can be used repeatedly until the air has been 
cleared of the condition causing the alarm. Pushing the Test/Hush button on 
the alarm will end the temporarily desensitized period, resulting during SMART 
HUSH in the voice message "hush mode cancelled". 
Voice message, "Hush Mode Cancelled", is announced by one of the following 
conditions:
1. The user cancels Hush mode by pressing the Test button while SMART HUSH 
is active and the smoke level is below the alarm threshold.
2. The Hush mode timer expires, (up to 10 minutes) and the smoke level is still 
below the Alarm Threshold.
Note: If the smoke level drops below the Alarm Threshold while in Hush 
mode, no voice message occurs. 










