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6. Test if the device works properly by pressing and holding the test/mute button for
approximately 3 seconds. If the device is working properly, it will beep four times and flash red.
More tips on how to install your carbon monoxide detector? Go to www.elro.eu
See back page (cover) for drilling template for vertical installation!
Functionality
Mode
Light signal
Audio signal
Explanation
Standby
Green flashes 1 x
per 40 sec.
No sound
Detector functions
correctly
Test
Red flashes 4 x
quickly, followed
by 5 sec. short
break
4 x quickly, followed
by 5 sec. break
Detector functions
correctly
CO alarm
Red flashes 4 x
quickly, followed
by 5 sec. break
4 x quickly, followed
by 5 sec. break
Detector has detected
carbon monoxide
CO alarm mute
Red flashes 1x per
40 sec.
No sound
Alarm signal is muted
CO alarm memory
Green flashes 3 x
per 40 sec.
No sound
The detector has issued
a CO alarm in the last
48 hours
Low battery
voltage
Yellow flashes 1 x
per 40 sec.
1 x per 40 sec.
Low battery voltage,
replace device asap
Low battery
voltage mute
Yellow flashes 1 x
per 40 sec.
No sound
Low battery warning
muted for approx. 10 h.
Siren error
Yellow flashes 2 x
per 8 sec.
No sound
Siren error detected,
replace device asap
Sensor error
Yellow flashes 2 x
per 8 sec.
2 x per 8 sec.
Sensor error detected,
replace device asap
End of life
Yellow flashes 3 x
per 40 sec.
3 x per 8 sec.
End of life, replace
device asap
Standby
In the standby mode, the CO level (if this is lower than 20 ppm it will display 0) and the room
temperature are shown, in an alternating manner. If the CO level exceeds 20 ppm, only the CO
level is displayed. This detector is equipped with a night mode, which means that the standby LED
is automatically switched off in dark areas.
Alarm
If the CO level in the room is too high, the carbon monoxide detector switches to the alarm mode
according to the scheme below.
030 049 PPM: Alarm signal after 120 minutes
050 099 PPM: Alarm signal after 60 - 90 minutes
100 299 PPM: Alarm signal after 10 - 40 minutes
> 300 PPM: Alarm signal within 3 minutes
6


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