Dual pid (coffee and steam) Allows you to electronically control coffee and steam boiler temperature. Pro touch steam wands – special order High performing steam wands that are cool to the touch. 3-button interface Buttons of the left group (AV) or on the electronics board (EE) can be used to program the machine. Saturated groups Ensure unsurpassed thermal stability, shot after shot. Pro app compatible Electronic board that allows connectivity with the La Marzocco Pro App. Water sensor Measures the conductivity and hardness of water as it enters the machine.