VEVOR DM306 Instrucciones Originales página 6

HCHO (formaldehyde) ideal range: <=0.10 mg/m3
(0.08 ppm/m3)
TVOC ideal range: <= 0.6 mg/m3 (0.45 ppm/m3)
The formaldehyde alarm threshold is 0.100 mg/m3. If levels
of HCHO exceed this formaldehyde alarm threshold, the
device will alarm with short beeps.
Switch Temperature Unit
The temperature unit's default is Fahrenheit(°F).
Note: Turn on the monitor at the same time to continue to
long press Power Button until the unit switch can not be
released, otherwise it can not be switched, you need to
re-power off and on again to switch.
Formaldehyde correction method
When the formaldehyde content is not in the normal range,
the machine need to be calibrated. Correction method: Put
the device into a place of good air quality ,turn it on,then
after 5-10 minutes,quickly click the power button twice . you
will see the HCHO value is 0.000 and TVOC value is 0.000,
the calibration is completed.
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