All STIEBEL ELTRON direct heaters meet the new approval criteria of the ErP regulation. They also offer the user added convenience: an important feature of the new generation of products is its standard electronic control unit with LCD. It makes each appliance "smarter": for example, the new appliances automatically detect whether a window is open, feature a 7-day timer with three time programs, and enable comfort and setback temperatures to be programmed. They also have an adaptive self-learning function in timer mode: if a specific temperature has been programmed for 6 am in the bathroom, the appliance "learns" how much time it needs to heat the room to this temperature – and on the next occasion automatically switches on earlier or later accordingly.