Information on the RolloTron swivel winder Standard DuoFern 2510/2550 Y. Beenen Updated December 23, 2021 13:10 Follow We are happy to answer all your questions on general and technical topics in our FAQ section. Forwarding to the FAQ - area Related articles Operating instructions RolloTron swivel winder standard DuoFern 2510/2550 Activate login mode: Swivel winder Standard DuoFern 2510 / 2550 Information about the Troll Basis DuoFern 5615 Information about the RolloTron Basic DuoFern 1200 Device setting for sun shading via HomePilot®