Temperature controller with button interface K.1 polar white, glossy. Room temperature controller with button interface for individual single room control, with dismantling protection, operating modes: comfort, standby, night-time reduction, frost/heat protection, dew point each displayed by LED, with status LED red for heating, blue for cooling and yellow for activated, with presence button for switching between comfort and standby mode, presence button and control knob can be parameterized without function. For continuous or switching control. For heating and/or cooling mode, heating or cooling in 2 stages possible, valve protection can be parameterized, behavior when bus voltage returns can be parameterized, with programming button and red programming LED, with 4 independent binary inputs for potential-free contacts, 4 binary inputs or 2-3 binary inputs and 1-2 outputs can be parameterized, with integrated bus coupler, bus connection via connection terminal, binary inputs/outputs with screw terminals. Flush-mounted installation, surface/design program.