NOTE: This humidistat is designed to work with Aprilaire humidifiers manufactured prior to 2010.
Aprilaire 56 AUTO TRAC HUMIDISTAT Brand new and genuine Aprilaire AutoTrac Humidistat Controller with outdoor air sensor. Automatically lowers and raises the humidity setpoint as the outdoor air temperature changes.
The Aprilaire 56 can be wired so your system gets power when the blower comes on instead of the furnace.
Click here for the Aprilaire 56 Owner's Manual.
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