Operating instructions RolloTron Standard DuoFern 1400/1405/1440 Y. Beenen Updated July 11, 2024 11:46 Follow Download PDF Related articles Activate login mode: RolloTron Standard DuoFern 1400/1405/1440 Operating instructions RolloTron Comfort DuoFern 1800/1840/1805 Operating instructions RolloTron Basis DuoFern 1200 Simplest basic setting of the RolloTron Comfort 1700/1740/1705 Activate login mode: RolloTron Basic DuoFern 1200