Inkbird Pre-Wired Dual Stage Digital Temperature Controller Outlet Thermostat 110V, 1100W Heating and Cooling for Fermentation Kegerator Heating Mat ect Simple to use: plug it in, set the temp ranges, place the probe, plug in the heater/cooler into the marked outlet. Be able to connect with refrigeration and heating equipment at the same time. Easily calibrated. Can display in Centigrade or Fahrenheit. Whether you need temperature control for fermentation, greenhouse, kombucha control or to set up your temperature project system, the ITC-308 temperature controller is a great choice.