MeaningLight
GoodGreen
NormalYellow
BadRed
You can also directly judge whether the formaldehyde value exceeds the standard through the LED indicator.
The following is the comparison table of indicator light color and its meaning:
When the measured value is between 0 and 0.08 mg/m ³, the formaldehyde value belongs to the safe range;
When the measured value is at 0.08 ~ 0.1 mg/m ³, the formaldehyde value belongs to the warning range and
needs close observation;
When the measured value exceeds 0.1 mg/m ³, the formaldehyde value exceeds the standard and must be
treated with formaldehyde.
PTH-2 have TVOC indicator as below：
TVOCIndicator
not exceed
Note: That the warm-up time of the TVOC sensor is 5 minutes.
Green
Going to exceedYellow
ExceedRed
04
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General