Room Temperature Controller Smart 55, White glossy finish. With colour display, temperature/humidy sensor and 4 inputs. Flush mounted. Integrated BCU. Fits 55mm systems/ranges: – GIRA Standard 55, E2,E22, Event, Esprit. – BERKER S1, B3, B7. – JUNG A500, Aplus, Acreation, AS500. – MERTEN 1M, M-Smart, M-Plan, M-Pure. Active colour display to indicate function and status. Background colour w/b and display brightness adjustable. Display of set and actual temperature. For indoor temperature controlling Range -10 to +50°C. Selectable temperature controller (PI, Two-position, PWM). Simple setpoint adjustment via separate +/- buttons. 1Bit +/-, 1Byte oder 2Byte absolute object for setpoint adjustment. Setpoint values are stored at bus voltage failure. Limit values min/max, frost protection alarm, min/max memory. Operation mode can be set via Bit/Byte objects. Temperature and humidy sensor with dew point calculation. Message when leaving the comfort zone. 4 binary inputs to connect potential free contacs (push-buttons or window/auxiliary contacts). Ventilation control by hand or automatic operation. 14Byte object for plain text diagnostic. Installation in a installation box with included support ring. Recommended installation height: 1,6m. Integrated bus coupling unit. 3 years warranty.