Air Quality Meter CO2 Formaldehyde TVOC

Air Quality Meter CO2 Formaldehyde TVOC
 
Intelligent value tester uses a semiconductor sensor to monitor air quality
 
Features a superior electrochemical detection module 
with high accuracy, stable performance
 
Strong anti-interference ability, low power consumption and a long service life
 
This sensor does not require any calibration, it self calibrates upon booting and can accurately detect the quality levels in seconds
 
Different colors correspond to overall air  quality at that time
 
Green 400-450ppm
Blue 451-700ppm
Purple 701-1000ppm
Yellow 1001-2000ppm
Red 2001-5000ppm
 
Formaldehyde (HCHO) is the most important carcinogen in outdoor air among the 187 hazardous air pollutants (HAPs) identified by the U.S. Environmental Protection Agency (EPA), not including ozone and particulate matter
 
Carbon dioxide (chemical formula CO 2) is an acidic colorless gas with a density about 53% higher than that of dry air. Carbon dioxide molecules consist of a carbon atom covalently double bonded to two oxygen atoms. It occurs naturally in Earth's atmosphere as a trace gas. The current concentration is about 0.04% (412 ppm) by volume, having risen from pre-industrial levels of 280 ppm
 
TVOCs play an important role in communication between animals and plants, e.g. attractants for pollinators, protection from predation,and even inter-plant interactions. Some VOCs are dangerous to human health or cause harm to the environment. Anthropogenic VOCs are regulated by law, especially indoors, where concentrations are the highest. Most VOCs are not acutely toxic, but may have long-term chronic health effects
 
Battery:  1 * 3.7V, 1200mAh lithium battery(included)
Screen type: 2.8 inches TFT-LCD
Material: ABS
Screen resolution: 240 * 240 Response time: <1s Test temperature range: -10 to 70 celcus
Humidity test range: 0-99%RH
Working voltage: 5V/1A adapter
Recharging current 600mA
Recharging: USB
Item size: 71.2 * 91.6 * 36.5mm / 2.80 * 3.61 * 1.44in
New Zealand seller