A lock having a plug installed within a housing. The plug can be securely retained within the housing using an attachment device disposed within the lockable volume. The attachment device can have a set screw and/or a pin to secure the attachment device to the plug and to prevent rotation of the attachment device.

A lock having a plug installed within a housing. The plug can be securely retained within the housing using an attachment device disposed within the lockable volume. The attachment device can have a set screw and/or a pin to secure the attachment device to the plug and to prevent rotation of the attachment device.

A cylinder lock includes a housing; a cylinder rotatably provided therein and having first and second ends, the cylinder extending in a longitudinal direction between the first and second ends and including an internal keyway for placing a key corresponding to the lock in the cylinder; a locking mechanism that prevents rotation of the cylinder with respect to the housing when the key is not present in the keyway; a blocking element positioned between the first and second end, and configurable to take a first position wherein the keyway is blocked such that the key cannot be placed in the keyway and a second position wherein the keyway is unblocked such that the key can be placed therein; a configuration device to configure the blocking element in the first or second position, and controllable by wireless communication between the lock and a remote control unit.

A locking device includes a lock, a blade and an attachment. The lock includes a key slot and a lockpin unit. The key slot extends from a key insertion face to an interior of the lock. The lock includes an inner wall. The lockpin unit is in the lock and extends into the key slot from the inner wall of the lock. The blade includes a guiding end, a control end, a receiving portion located between the guiding and control ends, and a guiding piece. The guiding piece is arranged at the guiding end. The guiding end is located in the key slot, and the control end is located outside the key slot. The attachment is detachably attached to the receiving portion. The blade is slid to drive the attachment to be in or off contact with the lockpin unit.

A locking device includes a lock, a blade and an attachment. The lock includes a key slot and a lockpin unit. The key slot extends from a key insertion face to an interior of the lock. The lock includes an inner wall. The lockpin unit is in the lock and extends into the key slot from the inner wall of the lock. The blade includes a guiding end, a control end, a receiving portion located between the guiding and control ends, and a guiding piece. The guiding piece is arranged at the guiding end. The guiding end is located in the key slot, and the control end is located outside the key slot. The attachment is detachably attached to the receiving portion. The blade is slid to drive the attachment to be in or off contact with the lockpin unit.