A door unit for a lavatory facility on board an aircraft comprises a door element, a door frame, and a locking and release mechanism. By an articulated device the door element is held on the door frame so as to be movable between an open position and a closed position. The locking and release mechanism comprises a locking device and a release device. Further, by the locking device the door element can be locked in a closed position (PVER) in the door frame so that any opening of the door element from outside the lavatory facility is blocked. By the release device the locking device can be released. For releasing the locking device, the release device comprises a non-contacting sensor device that can be activated with a movement of the hand.