The perfect controller for the perfectionist distiller. SET AND FORGET! This one will run the still without you being there. No need to label your containers for the alcohol content, they will always be the same thing as using the still troll! This has revolutionized how people will make ethanol, alcohol, and refined cannabis! Once you set at 173f it will stay at 173f through the entire run. This unit, automates your process, and takes into account ambient temperature so if the temperature of your facility drops or raises throughout the day, your still temperature stays even.