Operating instructions RolloTron Basis DuoFern 1200 F. Tepaße Updated July 11, 2024 11:55 Follow Download PDF Related articles Activate login mode: RolloTron Basic DuoFern 1200 Operating instructions RolloTron Standard DuoFern 1400/1405/1440 Operating instructions RolloTron Comfort 1700/1740/1705 Operating instructions RolloTron Standard 1300/1340/1305 How are switching times set on the RolloTron Basis 1100?