The YNAK 16 in 1 Air Quality Monitor is a versatile indoor device that displays 7 different AQI levels, providing users with a comprehensive overview of their indoor air quality. With a sleek 7" display and 9 AQI alerts, this monitor not only detects harmful pollutants but also tracks and displays the levels of CO2 in the room. Its stylish design in a classic black color makes it a stylish and functional addition to any indoor space.