Gas detector analyzer air quality monitor co2 meter carbon dioxide detector temperature humidity monitor co2 alarm function Features: 1. Selected quality sensor, high precision, anti-interference, with fast reaction speed. 2. Equipped with a large digital display with backlight, you can clearly see the remaining electrical quantity, co2 value, temperature and humidity data. 3. This product is equipped with a CO2 alarm function, which will alarm when the CO2 concentration is abnormal. 4. Areas of application: agricultural planting, greenhouse plants, production warehouse, material processing, domestic interior, etc. 5. This product has LCD display, and the numerical display is very clear and intuitive.Description: This is a type of air quality detector, which can be used to test temperature and humidity and co2 concentration. Equipped with a large digital display with backlight, you can clearly see the remaining electrical quantity, co2 value, temperature and humidity data. The color circle will be changed according to the detection data.Specifications: Scrren:LCD Screen display CO2 Technology : infrared ( NDIR) Temperature unit between Celcius and Fahrenheit Switch Detection range: CO2 ( 400-5000 ppm) Power supplyrechargeable Li-battery 1000mah includding USB Chargeing cable Material: ABS Color:Black Product size:70*80*35MM Weight:150gPackage Included: 1 pc*Air Quality MonitorNotes:1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.