Item Type: Carbon Dioxide Detector Material: ABS Weight: Approx. 205g / 7.2oz Detection Technology: Infrared Detection Technology Applicable Temperature: 0~50C Measurement Error: 1C Humidity Measurement Range: 0% ~ 99% RH Humidity Measurement Accuracy: 2% RH Display Mode: LED Digital Display + LCD Screen + Backlight Detection Range: 400-5000PPM Working Voltage: 5V Product Size: Approx. 9x7x4cm / 3.5x2.8x1.6in Power Supply: Integrated Lithium Battery 1200mAh (Battery Included) Sensor: Infrared Sensor Battery Capacity: 1200MAH, With Power Indicator Charging Interface: Type-C, 5V Carbon Dioxide Indication: 0-799ppm: green flashing 800-1199ppm: yellow flash 1200-1599ppm: orange flash 1600-1999ppm: red flash Above 1999ppm: four colors flash 1The air quality monitor can simultaneously detect carbon dioxide concentration, temperature and humidity. 2The colorful display can display the current carbon dioxide, temperature and humidity data. The color ring changes as the carbon dioxide content changes. 3You just need to press the power button for 3 seconds to turn it on and off, and it will automatically detect carbon dioxide. 4With its small size, light weight, it is easy to carry, and can be placed in the kitchen, living room, bedroom or when going out. 5Using infrared detection technology, the measurement accuracy is good, the performance is stable, and the measurement error is small.The screen has a protective film, so you can see it more clearly when you tear off the protective film. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1 x Carbon Dioxide Detector 1 x Manual 1 x USB Cable