Yep - go to Radio Shack and buy the one rated the same as a wall jack (you will have to wire it yourself). Mine was $20.
My incubator is set up using a marine cooler and I have .5 a degree variance. I have the fan on a rheostat and the faster it goes the more stable the temps are.
Seems to be working. I only have one clutch so far, but the eggs look exactly like they did the day I put them in 3 weeks ago. I even saw a few wiggles when I candled them tonight…![]()