The Air Cleaner Control provides status information at all times: Filtering - When the air cleaner is cleaning the air, either at your command or when the heating and cooling system is operating, bars on the display will sequence on and off to let you know that it is working Filter Life Indicator - This area of the display indicates filter usage. Bars will build indicating usage increments of 20%, based on how the Air Cleaner Control was set up. When all bars are filled and begin to flash, it is

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Item Weight: 2 pounds (View shipping rates and policies)

ASIN : B0076ZYX00