Practical control unit with 8 operation buttons, operational display, status indicator, and title block. The operational display can also be used as a orientation light. It features a room temperature controller and display, as well as an integrated piezo buzzer for indicating alarm states and an IR receiver. All functions of the respective buttons can be controlled with an IR remote control. The room temperature controller can be used for heating and cooling with continuously variable KNX actuators or for controlling switching actuators and heating actuators. It includes a white backlit display for showing the time, date, temperature, and operating mode. The menu allows for the setting of standard operating modes, setpoint, working day/non-working day (external control), display mode, time, switching times, and brightness of the display. The buttons can be freely parameterized as key combinations (two surfaces) or as individual buttons. The software functions include KNX: switching, toggling, dimming, and blind control (relative or absolute).