Air Quality Monitor Analyzer CO2 Meter With Temperature and humidity Basic parameters of the instrument Detection technology: infrared detection technology. Applicable temperature: 1-50 °C Display mode: LED digital display LCD screen+backlight. Detection range: 400-5000ppm Sensor: infrared sensor. Charging interface: TYPE-C 5V Co2 indication: 0-799ppm: green flashing, 800-1199ppm: yellow flashing. 1200-1599ppm: orange flashing 1600-1999 ppm red flash. Four colors flash above 1999 ppm Realize the display of CO2 concentration value per cubic meter Flashing light shows the grade of the section ORIGIN: GABY INSTRUMENTS