We all know that air quality is very important to our health, this product can detect CO2, temperature and humidity. You can use it in your home, office or anywhere you want to monitor air quality, come and try it, it won't disappoint. Characteristics: This product can not only detect CO2 for you, but also can detect HCHO, TVOC, temperature and humidity, which can give you the data you care about. WIDE APPLICATION: You can use this product for home air detection, car air detection, office, hotel air detection and so on. With temperature unit between Celsius and Fahrenheit switching function and 24-hour real-time data monitoring function. Adopt 3D circulating air conversion function and independent TVOC sensors to get more accurate data. This product is small in size, so you can take it with you wherever you go. Technical data: Material: ABS Measuring ranges: CO2: 400-5000 PPM HCHO: 0 - 1.712mg / m3 VOC: 0 - 12.50 mg / m3 Temperature ranges: -20 ℃ - 60 ℃ Humidity: 20-99% Application technology: natural air flows Floating error: 3% -30% Working voltage: 5V Battery: 1 x lithium battery, 1200mAh (included) Item Size: 118 x 70 x 34mm / 4.6 x 2.8 x 1.3in Package weight: 226g / 8.0oz Packing List: 1 x Air Quality Detector 1 x User Manual 1 x data cable