Room thermostats are used for floor/room temperature control in electric floor heating systems. By controlling room temperature in accordance with the temperature desired by the user, the room thermostats provides optimal energy savings due to its 0.5°K CA (Control Accuracy) value while upholding optimal thermal comfort in the room. Option for connection of external floor sensor for limiting floor temperature. This thermostat is controllable through a central control unit with pilot wire signal. This thermostat is solely for the French marked.