Termocos has a consumer announcement

The thermocos reports that as the temperature of the room reaches the desired temperature (appointed in thermocomcoc according to numbers), the thermococa will close and the radiator will not be supplied with hot water until the room's temperature begins to drop. Thus, the thermococcus will be opened when the temperature begins to drop and the hot water will begin to circulate in the radiator again until the room reaches the desired temperature.

So if the thermococa is located at 3 or 20 degrees Celsius and the room temperature is 20 or more, the radiator will be closed.

Because of the controlled room temperature and radiator regime, the new system will not allow the radiator to overheat, which removes the need for opening windows or unnecessary ventilation and contributes to energy savings of up to 20%”, says the report.