Humidity controller for apex

[jimbo222]

I have not. But just an opinion.
Any mechanical style humidistat would work . The ones off humidifiers . Set it at 40 % wire it as you would a float switch to the breakout box .The humidistat are usually normally open.
Then Program an outlet when switch closed to on .this will activate the dehumidification. Fan , Hrv, furnace fan . Anything.
I'd add a 5 Minuit delay on reactivation