Operating Instructions Tubular Motor Actuator 9471-1 F. Tepaße Updated August 28, 2024 09:50 Follow Download PDF Related articles Activate login mode: DuoFern tubular motor actuator 9471-1 Operating Instructions DuoFern Sun Sensor 9478-1 Information about the RolloTube S-line DuoFern Initial startup of sun sensor 9478-1 (direct logon to actuators) Successor list RolloTron, successors of older RolloTron devices. Electronic belt winders