Appliance controller system featuring automatic beverage dispenser shutoff system.

An appliance controller that includes an automatic beverage dispenser shut-off system is described. It comprises ≥1 module configured to: provide power to an appliance that receives fluid from a fluid supply system; receive a fluid supply system signal indicating that fluid is not being provided to the appliance; and disconnect the power to the appliance. The modules may take the form of an appliance controller circuit having a 1st circuit part configured to provide power to an appliance that receives fluid from a fluid supply system and a 2nd circuit part configured for receiving a fluid supply system signal indicating that the fluid is not being provided to the appliance and disconnecting the power to the appliance. The appliance controller may form part of an appliance controller system that comprises appliances, appliance controllers and a fluid supply system.