Abstract: A lock box for an electronic lock with lock box for an electromechanical lock comprising a housing with a first follower half that has a form-closed connection with a first handle for actuating the lock, with the first follower half having an actuating element for an unlocking linkage, a second follower half having a form-closed connection with a second handle for actuating the lock, restoring elements, a coupling element which in rest position (a) enables the first and the second follower half to move relative to one another and when in operating position (b) enables the two follower halves to be connected with one another, a motor, a control device as well as an energy supply, with the coupling element being provided with a pivotable articulated arm supported on the housing, said arm when in actuating position (b) engaging with recesses arranged in both follower halves so that when the second handle is actuated the lock can be opened via the second follower half.