EN9
When the measured PM 2.5 / CO
2
/ TVOC / RH% reaches the set
high / low alert level, the related
or
icon appears and flashes
to remind you.
To use the sound alarm (for high alert)
•
Press the
button once to turn on the alarm. When the
alarm is on, the
icon appears under the CO
2
reading in the
middle of the display.
•
When the measured PM 2.5, CO
2
or TVOC reaches the set
high alert level, both the
and
icons flash and an audible
beep sound will be given continuously. The beep sound will
accelerate when the measured PM 2.5, CO
2
or or TVOC level
exceeds more over the set alert level.
If this happens, please open the windows, adjust the air
ventilation and avoid too many people gathering together to
improve the air quality of your environment.
•
Press the
button once to disable the voice alarm.
remains flashing if the PM 2.5, CO
2
or TVOC level exceeds
the set high alert.
