KNX Room Temperature Controller Smart 55, White glossy finish. With colour display, temperature-/humidity sensor and 4 inputs. Suitable for 55 mm switch ranges e.g. MDT assortment 55, GIRA Standard 55, E2, E22, Event, Esprit, BERKER S1, B3, B7, JUNG A 500, A PLUS, A CREATION, AS 500, A 550, A FLOW or MERTEN 1M, M-Smart, M-Plan, M-Pure. Active colour display for function and status indication. Selectable background colour and brightness of the display (white or black). Display of set- and actual temperature. Room Temperature Controller. Measurement range -10 … +50 °C. Selectable controller type (2-step, PI, PWM). Easy setpoint adjustment over separate +/- Push-buttons. 1 Bit +/-, 1 Byte or 2 Byte absolute object for setpoint adjustment. Setpoint storage in the event of a bus power failure. Temperature min/max memory, messages and Frost/heat protection alarm. Operation mode change via Bit/Byte object. Temperature- and Humidity sensor with calculation of the condensation point. Notification when leaving the comfort zone. 4 Binary inputs to connect potential free contacts (Mechanical Push-buttons, Switches, window contacts). Ventilation control with manual and automatic operation. 14 Byte object for plain text diagnosis. Installation in an installation box using the included installation frame. Recommended installation height: 1.60 m. Integrated Bus coupler.