Press the button on the Mill Sense device to understand your air quality levels:
Blue: It is cold in the room, temperature is below 18°C.
Green: Indoor air quality is good and the sensor values are within recommended level.
Yellow: Indoor air quality is approaching poor/moderate levels. Take simple steps such as opening windows to bring fresh air inside.
Red: One or more of the sensor values are above the recommended level. Actions should be taken to either increase ventilation, dehumidifying or humidifying, depending on what levels needs to be addressed.