This multifunctional detector allows you to better understand the current environment. It will show you the detected PM2.5, CO2, TVOC, HCHO, temperature and humidity for you. It also can be used as a clock for it will show you the time, date, week for you. With this tool, you don't need to buy an alarm clock. If you are interested in this product, come and have a try, it will not let you down. Features: Portable Size: The small size of this tool is very convenient for everyday use, you can put it on your desktop without taking up too much space. Tuya APP Remotes Viewing: After connect with your mobpilephone APP correctly, you can view the data on your mobilephone easily, wherever you are. You can setting the 2 set of clock alarm according to your needs, with this tool, you don't need to buy an alarm clock separately. Built-in large capacity rechargable lithium battery to supplys power, and you can recharge it in time. Large Display: Large color screen allows you to browse the data more clearly, makes it more convenient for elderly and children, giving you a better experience. You can short press the button to change to the history and calendar interfaces. You can also press the "+" and "-" buttons to the parameter set interface. Specifications: Material: ABS Color: white, black (optional) Sensors: VOC sensors PM2.5 measuring ranges: 0-9999ug/m PM2.5 resolution ratio: 1ug/m TVOC measuring ranges: 0-3mg/m TVOC resolution ratio: 0.001mg/m CO2 measuring ranges: 400-5000PPM HCHO measuring ranges: 0-3mg/m Temperature measuring ranges: 0-60 Humidity measuring ranges: 0-99%RH Battery: 1 * lithium battery, 1200mAh (included) Package size: 120 * 110 * 50mm / 4.7 * 4.3 * 2.0in Package weight: 270g / 9.5ounce Packing List: 1 * Air Quality Monitor 1 * Cable 1 * Manual