Starting on the left, there is
Power
ground
Trigger to fan
Status output
AC input
Sensor input
sensor ground

I couldn't find an ideal box, so I found one that will completely enclose the board. You (or me) can drill a hole in the box to run the wires through. Then you use the screw terminals to attach them to the board. I'm going to align the hole on mine to be pointing down (with be either side or the end of the box). The board will also be sprayed with a protective coating to help prevent any small splashes/condensation from doing anything bad.

The plastic black box is ~2"x4"x0.88" and has mounting tabs. The board is ~1.5" square.

The DIP switches are pretty tiny, and so is the knob to set the turn on temperature. Basically you'll set them with the top of the box off, run it up to temp to make sure it all works, then you can put the top on and forget about it. When I ship them out I'll have the temp set to ~210*.

If you ever find yourself in a fair fight, your tactics suck.