Inkbird Dual Stage Temp Controller It is a simple but

It is a simple but key upgrade that you will be glad you have everytime you take a reading

engineered Aluminum

Adjustable Heating/Cooling differential

Some residual foam in your fermenter

or any other DIY project you come up with

Inkbird Dual Stage Temp Controller It is a simple butThe Inkbird dual stage temperature controller is an easy to use and economical controller that is perfect for home brewing. Inkbird controllers allow you to control both heating and cooling, and set independent differentials for each to keep the exact temperature you need. The Ink bird ITC 308S controller performs many of the same functions as the Ranco or Johnson but at a more affordable price, making it a great alternative for temperature control.