Product Description

Aprilaire 4838 Air Cleaner Control. This device Indicates when the air cleaner is running, gives you active control of the air cleaner based on personal preference and event triggers and monitors the fan run time and intelligently to tell you when to replace the filter. It can automaticly cycle the fan peroidicaly to clean the air in your home on days when your heating or cooling system is not running much or at all.

The manufacturer is sometimes referred to as April Aire, Aprilair, April Air but is correctly spelled Aprilaire.