Life Basis CO2 Monitor Portable CO2 Detector, 3 in 1 Air Quality Monitor with Temperature Humidity CO2 Tester for Homes Office Car 0~5000 PPM Range

【3-IN-1 AIR QUALITY MONITOR 】This air quality sensor can detect CO2, temperature and humidity. Know what is in the air you breathe to improve your air quality, to protect your family. 【HIGH PRECISION SENSOR】Multifunctional air quality monitoring device with high precision laser particle sensor and NDIR (infrared) technology based carbon dioxide sensor. CO2 range: 0~5000 PPM, Detection temperature: -10°C to 40°C (14°F to 104°F), Relative humidity: 20% - 80% (± 5%) RH. 【 LCD DISPLAY AND BACKLIGHT DESIGN】Large LCD display and backlight function, which makes it easier to read in low light. As well as the which changes from expression icon and indicator light according to different levels of carbon dioxide concentration (Green Light ≦ 700ppm, Good; 700ppm＜Yellow Light ≦ 1500ppm, Normal; 1500ppm < Red Light, Bad). 【DENSE OPENING DESIGN】It is convenient for air circulation and heat dissipation. The rear opening design not only ensures that the sensor is in full contact with the air, but also facilitates heat dissipation, thus reducing false alarms caused by excessive temperature and insufficient contact with the outside air. 【WIDE APPLICATION】Perfect for monitoring air quality in schools, office buildings, greenhouses, factories, hotels, hospitals and anywhere high levels of carbon dioxide are emitted. If you have any questions about the product, please feel free to contact us via Amazon, we will reply within 24 hours.