GrainFather G30 Connect Control Box - Replacement Digital ControllerThe GrainFather Connect Control Box is the "brain" of the G30 series all in one brewing system. This replacement unit features Bluetooth connectivity, allowing you to control your mash and boil stages directly from your smartphone or tablet via the GrainFather App. It provides precise PID temperature control, automated step mashing, and delay timer functionality, ensuring that your brewing process is consistent, predictable, and fully modernized.