This invention concerns an end of stroke device for rolling shutter operators, comprising two cursors each associated with an end of stroke switch and both coupled to a threaded bar turning in response to the rotation of a roller pulley. Each cursor (18, 19) is assembled and turning idle between two support flanges, sliding on linear guides parallel to the threaded bar, and it is engaged by a stop means (24) which is manually moveable between a block position to prevent the cursor from turning and an unblocked position to enable manual idle turning of the cursor in respect to the threaded bar for positioning along said bar and in relation to the respective switch.