It appears that the switched relays are powered independently from the power feeding the actual controller. Am I correct in assuming that it is fine to power 12V from these terminals? Thinking of rigging up a temperature controlled fermentation cooler utilizing recirculating water. I have several 12V bait tank pumps and a regulated power supply to run them off of.
my thought is, set up a recirculating colling system similar to what is being discussed in this thread:
And house the entire thing inside an insulated box with a space heater inside. The cold water tank would be outside of the box, with the lines running a minimal distance into/back out of the chamber. Temperature probe would be inside the 10 gallon construction cooler, with fermentation done in a carboy inside of it. Hook the lines up with garden hose fittings so that the cooler could be easily drained, and I would never have to remove it from the cooler to rack, kinda an overgrown carboy carrier.