The of air is very vital to health, so you need an air detector to detect the air of your life, this product can detect CO2, PM2.5, PM10, HCHO, TOVC, temperature and humidity for you, it combines sensors real-time monitoring of carbon dioxide (CO2). You can use it in your home, outdoor or wherever you , and try it. You will not be disappointed with it. This air detector can detect the CO2, PM2.5, PM10, HCHO, TOVC, temperature and humidity for you, you can see the data you . This product is in small size, easy to carry, you can take it to anywhere you to use it. This detector is suitable for indoor and outdoor air , muti-envornmental air monitoring for decorations, , and so on. With infrared CO2 technology and scattering PM2.5 sensor technolology and with temperature and humidity detect function, so you can the more data. With 24 hours real time monitoring function, you can see the data any-time you . Screen: common screen display PM2.5 detecting range: 0-999 /m CO2 detecting range: 400-5000 ppm Battery: 1 * lithium battery, 3000mAh (included) Colour:black+white Material:ABS Size:190mm x 80mm x 52mm Package Contents: 1 x Air Monitor 1 x USB Reharging Cable 1 x English instructions Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.