【Efficient and Accurate】: With multiple sets of nested sensors, it provides you with 7 data types to fully control air quality. Including indoor temperature/indoor humidity/indoor formaldehyde concentration/total volatile organic compounds (TVOC)/PM2.5/PM1.0/PM10, ensuring the health of your family in all aspects. 【Color and Sound Alarm】: It can perform real-time testing and analysis on the detector, with risk levels displayed with time. When it exceeds the normal range, the detector will sound an alarm and the interface color will change, thus avoiding risks. 【Easy to Operate】: It can be easily operated by simply pressing the power on/off button. It is designed with an LCD color screen digital display. It can display the humidity in the room, the temperature in the room, and the harmful formaldehyde and total volatile organic compounds in the room in real time. It has a built-in 1500mAh rechargeable battery and is equipped with a USB cable. The standby time can last for 4 - 5 hours. 【Application Range】: Home, office, car, hotel, kitchen, bedroom, etc. Its unit weight is 170.5 grams and can be carried with you for testing at any time.