Operating instructions RolloTron Standard DuoFern 1400/1405/1440 Y. Beenen Updated August 28, 2024 08:50 Follow Download PDF Related articles Activate login mode: RolloTron Standard DuoFern 1400/1405/1440 Operating instructions RolloTron Comfort DuoFern 1800/1840/1805 Simplest basic setting of the RolloTron Comfort 1700/1740/1705 Operating instructions RolloTron Basis DuoFern 1200 Activate login mode: RolloTron Basic DuoFern 1200