Is there a fog timer that detects the humidity level?

[Kurt]

Restricting ventilation is not something you want to do with treefrogs.

[Paul Rust]

I use the Hygro-Therm and I love it. I don't like variables or probable errors so I use the best devices I can find, this is one of them. It keeps my temps within 3 degrees of my setting regardless of room temp and has a built in adjustable night temp drop. I have my misting systems on timers but I use the humidity function as an emergency backup in my dart tanks to turn on another mister if the humidy gets too low. This thing does it all and very well.