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4.9 CO alarm warning
When the alarm detects a dangerous level of CO, the alarm will emit a loud alarm pattern.
The alarm signal pattern is 4 quick beeps followed by 5 seconds of silence. This cycle
repeats as long as a dangerous CO condition exists. The red alarm LED will flash the same
pattern. This signal will repeated until the alarm resets after dissipation of CO.
Sensitivity Setting: Conforms to EN 50291-1:2018 standard.
030PPM - Without alarm before 120 minutes
050PPM - Between 60 to 90 minutes
100PPM - Between 10 to 40 minutes
300PPM - Less than 3 minutes
NOTE:
- Refer to “4. What to do if the alarm sounds” when you hear the sounds of the CO alarm
warning.
4.10 CO alarm warning silence
During the device under CO alarm mode, press the TEST/SILENCE button, it will pause the
alarm sound of the device for 10 minutes. The ALARM indictor (red) will keep flash as CO
alarm mode, it indicates the device is running into the CO alarm silence mode.
NOTE:
- The audible alarm signal will reactivate about 10 minutes from the time the TEST/SILENCE
button is operated where the concentration of CO surrounding the alarm remains at 50
PPM or higher.
NOTE:
- The audible alarm signal cannot be silenced if the alarm exceeds concentrations
above 200 PPM.
NOTE:
- The alarm silencing activation can only be used once throughout a CO alarm period.
WARNING!
- Before using the silence activation, you must understand the alarm is due to dangerous
levels of carbon monoxide and the dwelling should be evacuated.
4.11 Adjusted alarm volume
- If the alarm comes into the status of CO alarm warning, the alarm will start in a lower alarm
volume (<85dB) for the first 8 sounds, then it will issue a normal alarm volume (>85dB). It
will avoid people to be scared suddenly by a loud alarm sound.
4.12 Test the unit
- To test the alarm, press and hold TEST/SILENCE button, you should hear alarm sound
patterns with a corresponding ALARM indicator (red LED) flash. The alarm sound patterns
will stop when release TEST/SILENCE button. The test alarm sound pattern includes: 4 short
beeps, 5 seconds pause, repeat the pattern until release TEST/SILENCE button.
