I'm assuming a wafer thermostat is what is in the Hovabator 1602- flat metal disks. They are threaded to the end of a metal post that sticks up through the styrofoam. To adjust warmer I turn it so that the disks get closer to the top of the incubator. To adjust cooler I turn it so that the disks move towards the bottom of the incubator.
Why? How does this make it warmer or cooler?
Why? How does this make it warmer or cooler?