5 in 1 indoor air quality monitor, it tracks carbon dioxide (CO2), formaldehyde (HCHO), volatile organic compounds (TVOC), temperature and humidity, helping you stay aware of air quality and potential health risks.Ideal for various settings including homes, offices, schools, and hotels, this monitor helps maintain a healthy environment by continuously tracking airborne pollutants and climate conditions.Simple to set up and operate, making it accessible for anyone concerned about indoor air quality without the need for professional installation.Up to 20 hours of continuous use, you don't need to keep it plugged in. This indoor air quality meter is small and portable, can detect the gas quality in bedroom, living room, kitchen, office, car, school, hotel, cellars, restaurant, campground and other environments.By integrating advanced laser particle sensors with temperature and humidity sensors, making high-precision air quality monitoring more accessible than ever.