The room thermostat flush mount 24 h mode 5 up to 40 c arnold rak occ2 is capable of switching on your heating system at pre determined times on different days of the week thanks to the 4 preset programs you can operate your floor heating in luxury or economy mode you can change the preset times and temperatures as required the clock thermostat is activated early so that the floor has the desired temperature at the set time the temperature is controlled by means of an external ntc sensor