Fresh air Intake Dampers

[DanW13]

Can you use any type of motorized damper for a fresh air intake that will work the same as Aprilaire's, or does the Aprilaire 8126 have something special built into there dampers that other motorized dampers do not have?

[beenthere]

That one has its own control system. A standard damper won't have that.
A sandard damper will only open or close, it won't check himidity levels.