KKmoon CO2 Monitor Carbon Dioxide Tester 2-inch LCD Screen Multifunctional Air Quality Detector

Features:
Practical Carbon Dioxide Detector: real time measure and display the current CO2 concentration, temperature and humidity simultaneously.
LCD Display with 3 Colors Backlight: the backlight color will various according to the carbon dioxide concentration, green backlight for 400~100PPM, yellow for 1000~3000PPM(buzzer once every 2s), and red for 3000~5000PPM(buzzer once every 1s).
Semiconductor Adopted: professional semiconductor provide fast and high accuracy measurement results, the CO2 data will upgrade every 4 seconds.
Rechargeable Battery Power Supply: built-in lithium battery with 1500mAh great capability, which can be charged with the USB power cord via power bank/computer/power adapter conveniently.
Wide Applications: can be used in office, home, car, laboratory, greenhouse, CO2 storage room, and more.