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Refer to the "What to do when carbon monoxide is detected?" chapter to learn what to do if the
carbon monoxide detector triggers an alarm.
If the CO level drops below 20 ppm, the carbon monoxide alarm will switch to the alarm memory
mode for 48 hours. This will notify you of the increased CO concentration, even if you were not on-
site at the time of the alarm.
Mute alarm
This carbon monoxide detector is equipped with a mute function with which the alarm signal can
be temporarily switched off (approximately ten minutes). When the detector is triggered, press the
test button to activate this function. If the CO level exceeds 50 ppm after 10 minutes, the detector
switches back to alarm mode. The alarm mute function cannot be used if the detected CO level is
higher than 200 ppm.
NOTE: Do not take any risks and only use the alarm mute function if you are 100% sure that the
situation is safe. When in doubt, leave the premises and follow the instructions in the chapter
"What to do when carbon monoxide is detected?". Only use the mute function if you are in the
same room as the carbon monoxide detector!
Low battery voltage
This carbon monoxide detector is equipped with a non-replaceable battery which has a lifespan of
approx. 10 years. When the batteries are low, the detector switches to low battery mode. This
means that the detector must be replaced as soon as possible. The low battery warning can be
silenced for approx. 10 hours by pressing the test button.
End of life
This carbon monoxide detector has an end-of-life warning. Approximately 10 years after activation,
the device needs to be replaced and switches to this mode. Replace the device as soon as possible
after this message occurs.
Maintenance
The carbon monoxide detector is equipped with a self-testing mechanism. Once a month, the
detector automatically checks the functionality of the sensor and the siren. If problems are
found, the detector switches to the error mode (either siren error or sensor error). We
recommend to manually test the detector at least once a year by pressing and holding the test
button.
Dust is a major cause of false alarms. Therefore, clean the carbon monoxide detector once a
month. Use a vacuum cleaner to gently remove any accumulated dust along the sides of the
carbon monoxide detector. Never use a wet cloth or detergent to clean your alarm, as this can
be harmful to the sensor.
7


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