The Aura has a 3 stage air quality indicator that indicates the purity of air around you. In order to test the Aura take it to an environment where there's smoke or smog and see the light change to red colour which indicates poor quality of air and then gradually watch it change to blue light and then green light.
Button“M”function: Click“M”button for the first time to turn on the automatic mode.The fan switches gears according to the air quality; Click“M”button for the second time is manual mode first gear; Click“M”button for the third time,switch to manual second gear; Click“M”button for the fourth time, switch to manual mode third gear and click“M”button for the fifth time, and turn off the machine.
Negative ion function: Long press the“M”button for the first time, turn on the negative ion, and long press the“M”button for the second time turn off the negative ions.