App-controllable RolloTron Comfort DuoFern 1805 Plus belt winder with a maximum tensile force of 60 kg The RolloTron Comfort DuoFern Plus belt winder can easily be installed in conventional shutter boxes with a width of 3.6 cm or more. It is extremely easy to use thanks to the self-explanatory keys and the bright, intuitive display. If additional DuoFern devices are registered, the shutter drive can serve as a control unit to direct automatic commands to all the receivers. Furthermore, connection to the HomePilot® control unit is possible thanks to the radio interface, allowing the belt winder to be controlled via the system’s user interface or via the free app on your smartphone. Up to 20 DuoFern devices can be integrated in just a few steps. Access to a wide range of practical functions means that all the shutters in the house can run through fully automatic scenes, from a daily programme to a weekend programme. The belt winder can also respond reliably to altered lighting and air co