ACL lock set by T Morgan & Sons which can only be operated by using special ACL keys. The ACL aims to provide disabled key holders with independent access to public toilets locked by this and similar ACS locks throughout the country. It includes a mortice lock case, strike plate, handle set, spindle, installation key and all necessary fixing screws & bolts. This ACL501 version has a special tamper proof emergency release for situations where the standard version slot release may have been subject to misuse. It should never be used in remote situations and is only for use in monitored areas where the release key holder can be easily and quickly found.