Old revisions Add to book Export to PDF Fold/unfold all Book Creator Add this page to your book Book Creator Remove this page from your book Manage book (0 page(s)) Help This is an old revision of the document! Scheduled lock A function that locks the doors in a specific zone according to a preset schedule. For instance, this function is used in buildings and facilities such as financial institutions where no one is allowed to enter for a certain period of time. 함께 보기 Scheduled unlock