Surface rim sliding bar with 57mm throw. Suitable for narrow style doors. Manual throwback to relock. Digital mechanical press button locks for controlling access to areas or rooms, for internal or external use. You can choose your own code group which can be changed quickly and easily. Designed to operate where the lock is used up to 80-100 times per day. The body is made from die cast zinc alloy with satin chrome finish. Over 7000 code groups. Non handed.