While you wait for answers, we may have found some information which could help you.
Click here for Handle Top RemoveReplacement wooden beads on velux windows?
Where can I purchase Velux Kem-140 motors?
bypass microswitch on Velux KEM-140B?
Velux KEM 140 skylight elec. opener only workd intermittent?
Velux window does close but does not lock?
Scissor Lift?