Heating/cooling operation. Communication with the free@home system is carried out wireless. Control element with room temperature controller function. With display of set-value temperature. With integrated switch actuator, e.g. for controlling thermoelectric actuating drives in heating/cooling systems or electric floor heating systems. RTC function is available also without prior programming (pre-configured). In connection with temperature sensor 6226/T the integrated room temperature controller can be fitted with a remote sensor. 3 wire connection (neutral conductor required). Only to be used in combination with ABB-free@home® room temperature controller cover plates 6235-xxx. With fixing claws.