This Hova-bator 2362n is my incubator I wired a STC 1000 to it to serve as the electronic thermostat, I left the waffer in for back-up. The STC monitors the temperature and cuts the fan and heater on and off. It holds ambient air temperature at 99.5 averaged so the eggs being solid should hold 99.5 continuous I have three other thermometers that I check the temperature by one through an air hold and 2 on the wire rack. I am satisfied so far. The control is plugged into an outlet the incubator is plugged into the control left side controlled by the STC 1000 it controls that outlet by temperature and turns power on and off to it according to temperature in the incubator the right side is for the egg turner it is hot all the time.