Frequently Asked Questions
HCHO: Here's an arcle that may help to explain the issue:
hp://www.ukcpi.org/features/formaldehyde
TVOC: According to WHO, VOC contains Formaldehyde,
d-Limonene, toluene, acetone, ethanol (ethyl alcohol)
2-propanol (isopropyl alcohol), hexanal.
Orange peel contains limonene (limonene), citric aldehyde,
as well as tangerine ketone, hesperidin, inositol, vitamin B1
and so on. Among them, alcohols, aldehydes, and ketones all
react electrochemically with the sensor diaphragm, leading
to increased readings.
Lemon/Orange impact on HCHO/TVOC
Can I calibrate the temperature and humidity
sensor for M2000 2nd generaon?
The displayed reading is higher than the normal temperature
because in addion to the ambient temperature, many
internal sensors and electronic components also generate
heat.
Currently we are not able to have a temp offset calibraon.
The temperature sensor was not broken, just the accuracy
(±2℃) not so high comparing to some professional
thermometer. The temperature sensor used in M2000 2nd
generaon is Sensirion SHT31, which is enough for normal
daily use.