Overview visual & acoustic signals
Operating
mode
Visual signal
(flash)
Acoustic signal
(beep)
Description
mode
Normal
1 x per
40 second
None
Device is
functioning
properly
Test
1 x per second
(3 x) / pause
of 1.5 seconds
1 x per seconds
(3 x) / pause
of 1.5 seconds
Device is tested
Alarm
1 x per second
(3 x) / pause
of 1.5 seconds
1 x per seconds
(3 x) / pause
of 1.5 seconds
Device is
detecting smoke
Alarm silence
1 x per
8 seconds
None
Smoke alarm
signal is muted
Low battery
warning
1 x per
40 seconds
1 x per
40 seconds
Battery is
running low
Low battery
warning
silence
None
None
Low battery
warning is muted
Sensor fault
warning
1 x per
40 seconds
1 x per
40 seconds
Sensor is not
functioning
properly
Buzzer fault
warning
2 x per
40 seconds
None
Buzzer is not
functioning
properly
