Use and Care Manual
9
Sleep Mode operates quietly by using a fan 
speed lower than low speed.
1.  Tap   to turn Sleep Mode on/o.
2.  Sleep Mode will turn o the display after 
3 seconds if no other buttons are tapped.
Auto Mode uses AirSight Plus™, a smart 
laser dust sensor inside the air purifier, to 
adjust the fan speed automatically based on 
air quality. For example, if the air quality is 
bad, the fan will automatically be set to high 
speed. 
The PM2.5 value on the display shows the 
amount of airborne particles (g) that are 
detected per 1 cubic meter (m) of air volume.
PM2.5 refers to particulate matter (PM) that 
is less than or equal to 2.5 microns (m) in 
diameter. These particles, also known as 
“fine particles”, are so small that they can only 
be detected with an electron microscope, 
and they stay in the air longer than heavier 
particles such as dust and mold.
Your air purifier’s AirSight Plus Laser Dust 
Sensor detects the amount of PM2.5 particles 
that are in a given space (g/m). Generally, 
the lower the number, the better your air 
quality. A number above 115 indicates that 
there is an unhealthy amount of fine particles 
in the air. 
Note: 
•  When the display is turned o, tap any 
button (except   ) to turn the display 
back on. If you don’t tap another 
button, the display will turn o again 
after 3 seconds.
•  The Check Filter Indicator will still turn 
on and stay on if it’s time to check your 
filter (see page 15). 
•  You cannot use the plasma function 
during Sleep Mode.
•  The Sleep Mode button is also used 
to reset the Check Filter Indicator 
(see page 15). Press and hold for 3 
seconds.
Note: 
•  The air purifier will take 5 seconds 
to detect the air quality each time it 
is turned on. During this time, the air 
quality indicator rings will be blue. After 
5 seconds, the air quality indicator 
rings will change color based on the 
detected air quality.
•  Auto Mode does not use the turbo fan 
speed.
•  The VeSync app also supports 
additional auto modes: Quiet Auto 
Mode and Ecient Auto Mode (see 
page 11).
USING YOUR PURIFIER (CONT.)
Air Quality Indicator Chart
Indicator 
Color
Air
Quality
Auto Mode 
Fan Speed
PM2.5 Range
Blue Very Good Sleep Mode 0–35 ug/m3
Green Good Low 36–75 ug/m3
Orange Moderate Medium 76–115 ug/m3
Red Bad High > 115 ug/m3
Auto Mode
PM2.5 Display
Sleep Mode










