ST8310 Air Quality Monitor 3 in 1 Indoor CO2 Temperature Humidity Tester Ambient/Dew Point/Wet Bulb Temp LCD Backlight

Different concentrations of carbon dioxide to the influence of human body

Carbon dioxide content Table Ming :

350～450ppm  With general outdoor natural air environment

350～1000ppm  Fresh air, breathe smoothly

1000～2000ppm  Feel the air turbidity, and began to feel drowsy

2000～5000ppm  Feel headache, sleepiness, dull,difficulty concentrating, rapid heartbeat, mild nausea

> 5000ppm   May cause serious lack of oxygen, cause permanent brain damage, coma and even death