PM2.5 (Par�culate Ma�er 2.5) refers to fine par�cles with a diameter of 2.5 microns
or less. Due to its �ny size, PM2.5 can get absorbed into the bloodstream and lungs,
so long-term exposure to high levels of PM2.5 may cause eye and nose irrita�on,
coughing, asthma, emphysema, lung disease, heart a�acks, cancer, and more.
Carbon dioxide(CO
) is a colorless and odorless gas usually derived from the breath
2
of humans and animals. High CO
concentra�on means that fresh air or ven�la�on
2
is required; otherwise, it may cause problems such as drowsiness, dizziness, loss of
a�en�on, and cogni�ve impairment.
TVOC (Total Vola�le Organic Compounds) are a wide range of chemicals that readily
evaporate into the air at room temperature. TVOC sensors behave similarly to the
human nose, responding to changes in the rela�ve intensity of indoor TVOCs on a
scale from 1 to 500.
Temperature & Humidity may o�en be ignored however they do have a significant
impact on individual's well-being, comfort, health and safety as well as your property.
High humidity may lead to an increase in household air pollutants especially the biological
contaminants such as molds, bacteria, viruses and dust mites; cold, low humidity may
cause nosebleeds, skin and respiratory irrita�ons, dyspnea, sta�c electricity and etc.
AQI (Air quality index) is a quick guide to air quality levels. It aims to indicate the
cleanliness or pollu�on level of the air in an easy-to-understand way. It ranges from
0 to 500, with higher values indica�ng higher levels of air pollu�on and adverse health
effects. AQI assessments can show PM2.5, PM10, O
, SO
, NO
, CO, etc. Temtop
3
2
2
calculates AQI according to EPA standards and focuses only on PM2.5 and PM10.
1
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