Carbon Dioxide Detector Gas Concentration Content Color Screen Intelligence Feature: Material: ABS What to measure: carbon dioxide. Detection range: 400-5000ppm Large screen design, easy to see, carbon dioxide detection at a glance. 1s/ real-time refresh: Carbon dioxide concentration is constantly changing and will fluctuate greatly under certain conditions. RA-PID measurement can obtain relatively stable measurement values. High-performance chip: can accurately capture the weak current in the electrochemical reaction process, accurate calculation and measurement results. Abandon the traditional semiconductor measurement method, adopt more professional infrared optics away, accurate measurement of CARBON dioxide. Notes: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness Please allow slight manual measurement deviation for the data. Package Content: 1 x Air Quality Monitor