6
3. Other Alarm Visual And Audible Indicators
Operational Mode Visual Indications Audible Indications Action/Note
Normal (standby) Green LED blink approx 
every 60 sec.
Test (button press 
when no alarm  
condition is present)
(Note: Test is very 
loud, stand a few feet 
away.)
Red LED blinks in time 
with alarm pattern.
• Single beep.
• 3 long beeps, voice "Fire!", 
3 long beeps, 4 quick beeps, 
Voice "Warning, Carbon 
Monoxide," 4 quick beeps.
Perform Test/Hush® 
button press once a week 
to verify proper alarm 
operation.
Smoke or CO Alarm 
Memory (unit has  
experienced a smoke 
or CO alarm event, 
or has detected 
100ppm CO or 
greater.)
Red LED blink every 
16 sec.
After button push, 
voice “Smoke previously 
detected" or "Carbon Mon-
oxide previously detected" .
NOTE: Alarm memory is 
only retained for 24 hrs.
Push test button to clear 
Alarm Memory. 
Smoke Alarm Hush® 
Mode (SMART Hush® 
CONTROL)
Red LED blinks every 
2 sec.
After button push, voice 
“Hush Mode  
Activated."  Smoke alarm 
pattern stops. (If there is too 
much smoke to allow Hush®: 
voice "Too Much Smoke,  
 cannot be Hushed" Smoke 
alarm pattern continues.)
This feature is to be used 
only when a known alarm 
condition, such as smoke 
from cooking, activates 
the alarm.
CO alarm reset  None After button push: CO alarm 
pattern stops.
Unit is conrming if 
CO is present or if it 
experienced a nuisance 
situation.  Re-alarm means 
danger. Move to fresh air 
and call 911.