Battery powered winding shaft for a roller blind

摘要: Disclosed is a screening device (1) for an architectural opening (2) such as window. The comprises means (10) at least part of the and reel (7) arranged to be rotated around longitudinal rotational axis by electrical motor (6) powered energy storage (24) controlled control (15) including printed circuit board (14). A first end (11) connected so that can rolled or up dependent on direction (7). further bracket (5) connecting (2). (6), (14) are all substantially inside (7), wherein operation interface (4) mounted (3) (18) rotary encoder (8) second (19) engages output shaft (20) (6).