ONETEST-101AQ series indoor thermal comfort and air quality tester is developed for indoor environment monitoring and testing of residential buildings, public buildings, industrial factories and mines. Mainly used to test indoor environment such as temperature and humidity, black ball temperature, air breeze speed, noise, illumination, radiant heat, thermal comfort and other indicators; It can also test indoor air quality AQi, such as CO2, PM2.5, TVOC and so on. At present, it is one of the most comprehensive indoor environment and air quality tester at home and abroad.