Dual-Stage Temp ControllerExpertly maintain temperatures during any stage of your fermentation or beer service with our dual stage digital temperature controller! Control from 58F to 210F without having to flip a switch. This easy to program controller will keep your fermenter, keezer, or conical at the right temp. Program your temp plug in your heating and cooling devices and the controller will regulate your temperature to your desired setpoint. Ideal for serving kegged beer