The Bezzera brew group is heated by separate heating elements activated by a PID thermostat, which ensures a constant temperature. The second PID thermostat regulates the water temperature in the boiler designated for coffee extraction, guaranteeing optimal thermal stability in a range of 88-96 °C. The steam and water circuit is connected to an independent boiler, which is also controlled by a PID thermostat, allowing for optimal steam performance even under intensive use. The DE version is equipped with volumetric coffee dosing controlled by a microprocessor. It offers four coffee brewing options that can be programmed directly via the keypad; the fifth button activates the manual dosing process.