About This Automatic Brightness Adjustment: This air quality detector can automatically adjust the screen display brightness according to the surrounding brightness so that the screen is visible without blinding. Wide Application: This air quality detector can help detect gas and air pollution in homes, kitchens, bedrooms, offices, schools, cars, hotels, travel, camping, parties and other places. Energy Saving: This air quality detector can automatically turn off the screen when no one is using it to reduce energy consumption. Smart Air Semiconductor Sensor: This air quality detector uses a smart air semiconductor sensor to detect the temperature and humidity values of the air. Compared with ordinary sensors, it is more sensitive, accurate and stable. Air Particle Detection: This air quality detector uses both a self-developed NDIR sensor and a particle sensor to more accurately detect airborne particles to determine air quality.