Type:Carbon Dioxide Detector, Air Quality Monitor, Humidity Sensor Tester, CO2 Meter Temperature, Air Quality Test, Carbon Dioxide Monitor This Carbon dioxide detector can accurately detect the temperature, humidity, carbon dioxide content in the air, so that you can know the surrounding environment changes at any time. Features: This CO2 detector is designed with 5 stages of CO2 concentration, when the concentration reaches 2000PPM, all four lights will flash alarm. Come with LED digital display, LCD screen and backlight mode, which is super easy to read and shows clearly real time data. Adopts large-capacity battery (1200mAh) and supports USB charging, supporting a long time of continuous use and providing great convenience to charge. Real-time monitoring pollution data, let you know the concentration of CO2 per cubic meter at any time. With automatic calibration function, automatic calibration all day after starting. One click enable, just press the side button and then you can automatically detect the surrounding environment. Back wall design, more space saving. Ideal for use in grow room, offices, cellars, warehouse and so on. Specifications: Size (LxWxH) : 7cm x 9cm x 3.5cm Net Weight: 140g Sensor: Infrared sensor CO2 Measurement Range: 400-5000ppm CO2 Measurement Resolution Temperature Measurement Range: 0 - 50 Degrees Celsius Temperature Measurement Accuracy:Plus or Minus 1 Degree Celsius Humidity Measurement Range: 0%-99%RH Humidity Measurement Accuracy: Plus or Minus 5 Percent Relative Humidity Display Mode: LCD digital display, LCD Screen, Backlight Battery Type: Li-ion Battery (included) Battery Capacity: 1200mAh Charging Port: Type-C Input Voltage: 5V Power Supply Mode: USB charging cable power supply ( power adaptor not included ) CO2 Instructions: 0-799ppm: Green Flashing