Release mechanism for an electronic locking system, wherein the release mechanism is configured such that an input member and an output member are locked against relative rotation and can rotate together within a locking ring opening when a locking member is located in an input member recess and in an output member recess, and such that the output member is released to rotate relative to the input member when the locking member is located in the output member recess and in a locking ring recess. A freewheel mechanism and assemblies for an electronic locking system are also provided.