Household Air Quality Detector Multifunctional C02 PM2.5 Temperature Humidity Tester

Features:
For particulate matter detection, laser-scattering-theory is applied: Air goes into the detector through the air-inlet. When laser radiates on particles, the scattering light will be collected and the curve of scattering light is obtained. Then the curve will be changed into electric signal; particle concentration is calculated with this signal.
For CO2 concentration detection, NDIR-theory is applied: The CO2 sensor applied has two channels, which is much more accurate and more stable than one-channel sensors, because the two channels can compare with each other.
Multiple function, real time testing PM2.5, CO2, temperature and humidity.
Selected quality laser sensor to testing PM2.5, accurate data, anti-interference, with quickly reaction speed.
Dual channels infrared sensor to detect CO2, automatic calibration, and can provides long service time.
Equipped with large digital display, you can see the PM2.5, CO2, temperature and humidity data clearly.
Multiple interfaces switchable, main interface, particulate matter interface, temperature and humidity interface, battery and brightness interface, time and data setting interface, you can choose according to your demands.