Coway AP-1008DH User Manual

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  The cleanliness (pollution) level of the room is  
determined by the color at the end of the  
penetrating hole.
Clean:Blue Lightly polluted: 
Light purple
Polluted: 
Dark purple
Highly  
polluted : Red
It displays the current cleanliness (pollution) level of the room.
OPERATION/INDICATION PART  
How to Use