•15 functions: can detect CO2 (carbon dioxide), CO (carbon monoxide), HCHO (formaldehyde), TVOC (total volatile organic compounds), PMO.3, PM1.0, PM2.5, PM10, temperature & humidity, AQI (air quality index - mainly comprehensive particulate matter) and other parameters, and comes with WiFi remote, date and time, alarm, timer, timer and other functions •2.8" screen: Using a 2.8-inch TFT display screen, the data display is clear and easy to observe •App remote monitoring: You can use the Tuya APP to remotely monitor data in real-time, and you can set alarm values, sleep time and view daily, monthly and annual historical data of detection parameters in the APP •Large capacity battery: Built-in 2000mAh large capacity lithium battery, get rid of cable annoyance, convenient to use and charge •3 data display colors: According to the default safety value of the manual, it is divided into 3 data display colors: green, orange and red Specifications: •CO2 detection range: 400-5000PPM •CO2 detection sensitivity: 1PPM •CO detection range: 0-999PPM, ±10PPM •CO detection sensitivity: 1PPM •Built-in lithium battery: 2000mAh 3.7V •Charging time: 2-3 hours •Use time: 240-360 minutes •Net weight: 160g Note: •Avoid exposure to high temperature, humidity, rain and other environments that may affect product components. •Please use standard DC-5V charging. Package included: •1 x Air Quality Detector •1 x Cable •1 x English and Chinese User Manual