An electronic locking cylinder, comprising a housing, a cylinder core which is mounted in the housing so that it can be rotated relative to the housing about a rotation axis, wherein the cylinder core comprises an external sector configured to receive a key element and an internal sector comprising an authentication circuit and an actuator unit, wherein the internal sector is separated from the external sector by a protection member, wherein the external sector comprises an opening through which the key element can be inserted from an outside space via an insertion movement into an inserted position and through which the key element can be pulled out from the inserted position to the outside space via a pull-out movement, wherein the pull-out movement can only be carried out in a limited rotational range of the cylinder core, wherein an electrical interface is configured to interact with the key element to transfer energy to the authentication circuit and to the actuator unit and to exchange authentication data with the authentication circuit, wherein the actuator unit comprises a locking member which can be set in a blocking state and a release state, wherein in the blocking state a rotation of the cylinder core is prevented by the locking member and in the release state the locking member does not prevent the rotation of the cylinder core, wherein the actuator unit can be switched between an activatable state and a deactivated state, wherein in the activatable state, the actuator unit is configured to be able to transfer the locking member from its blocking state to its release state, and wherein in the deactivated state, the actuator unit is configured to set the locking member into its blocking state, characterized in that the electronic locking cylinder further comprises a mechanical transfer element, wherein the electronic locking cylinder is configured such that the mechanical transfer element is moved during the insertion movement of the key element from a first position to a second position, the actuator unit is in its activatable state when the mechanical transfer element is in its second position and the actuator unit controls the locking member to be transferred from its blocking state to its release state upon the exchange of the authentication data with the authentication circuit if the mechanical transfer element is in its second position, and the actuator unit is in its deactivated state when the mechanical transfer element is in its first position, wherein the electronic locking cylinder further comprises means configured to force the mechanical transfer element into its first position by the pull-out movement of the key element. a housing, a cylinder core which is mounted in the housing so that it can be rotated relative to the housing about a rotation axis, wherein the cylinder core comprises an external sector configured to receive a key element and an internal sector comprising an authentication circuit and an actuator unit, wherein the internal sector is separated from the external sector by a protection member, wherein the external sector comprises an opening through which the key element can be inserted from an outside space via an insertion movement into an inserted position and through which the key element can be pulled out from the inserted position to the outside space via a pull-out movement, wherein the pull-out movement can only be carried out in a limited rotational range of the cylinder core, wherein an electrical interface is configured to interact with the key element to transfer energy to the authentication circuit and to the actuator unit and to exchange authentication data with the authentication circuit, wherein the actuator unit comprises a locking member which can be set in a blocking state and a release state, wherein in the blocking state a rotation of the cylinder core is prevented by the locking member and in the release state the locking member does not prevent the rotation of the cylinder core, wherein the actuator unit can be switched between an activatable state and a deactivated state, wherein in the activatable state, the actuator unit is configured to be able to transfer the locking member from its blocking state to its release state, and wherein in the deactivated state, the actuator unit is configured to set the locking member into its blocking state, characterized in that the electronic locking cylinder further comprises a mechanical transfer element, wherein the electronic locking cylinder is configured such that the mechanical transfer element is moved during the insertion movement of the key element from a first position to a second position, the actuator unit is in its activatable state when the mechanical transfer element is in its second position and the actuator unit controls the locking member to be transferred from its blocking state to its release state upon the exchange of the authentication data with the authentication circuit if the mechanical transfer element is in its second position, and the actuator unit is in its deactivated state when the mechanical transfer element is in its first position, wherein the electronic locking cylinder further comprises means configured to force the mechanical transfer element into its first position by the pull-out movement of the key element.