Modern RolloTron Comfort DuoFern 1840 mini-belt belt winder, 15 mm belt width - controllable via an app The RolloTron Comfort DuoFern mini-belt belt winder replaces manual belt winders with a width of 15 mm and makes it easy for you to control the shutters in a modern way. The shutter drive has an integrated radio interface for connection to the HomePilot® control unit and other products of the system. This allows it to be controlled via the free app and also makes it a control centre for other radio-controlled belt winders, to which the commands can be transmitted. Onerous manual cranking is a thing of the past and the shutters can even be controlled when you are out and about (provided that the central control unit is connected to an Internet router). Creating scenes and programmes allows you to coordinate fully automatic everyday processes. For example, daily, weekly and weekend programmes are possible. In addition, you can choose between summer or winter time, as well as selecting