Object temperature controller with button interface K.5 made of stainless steel. Object room temperature controller with button interface for individual room control, with dismantling protection, operating modes: comfort, standby, night-time reduction, frost/heat protection, dew point. For continuous or switching control. For heating and/or cooling operation, 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.