Control element for room temperature control with LCD and 5 operating buttons. Used for single-room temperature control in heating and air-conditioning technology. The controller is a constant room temperature controller for ventilator convectors (fan coils) in 2-pipe and 4-pipe systems and conventional heating or cooling systems. The room temperature controller works in both heating and cooling mode. The fan stage can be switched manually or in automatic mode. Class of temperature controller 1 Contribution to space heating energy efficiency 1,0%.