Temperature controller, normally closed, with central piece, time-controlled K.1 anthracite, matte. Temperature controller, normally closed, with central piece, time-controlled, adjusts heating needs to individual lifestyles by regulating room temperature based on time of day and day of the week (program), with print. Suitable for heating or cooling operation. For room and underfloor heating, with integrated temperature sensor. For underfloor heating, regulation is possible using room and/or external temperature controllers, with an additional connection for external floor temperature/remote sensor. Large, backlit display with text display, operator languages adjustable: German, English, Dutch, or French. Maximum of 9 switching times per weekday, 3 pre-set time programs individually adjustable, programmable with the control panel removed. With switching between manual and automatic operation, with automatic summer/winter time changeover (can be disabled). Temperature regulation range adjustable, with manual temperature value adjustment, timer for hourly temperature changes, holiday program with date activation, operating hour counter or energy consumption display adjustable. With valve protection function, frost protection function, and access protection. Control method PWM or 2-point (On/Off) selectable, PWM cycle time and hysteresis (for two-point control) adjustable. Type of actuator (normally closed/open) adjustable, with self-learning heating curve, without spreader claws, with screw terminals, neutral conductor required.