CODELOCK 510 TUBULAR MORTICE LATCH. Heavy duty tubular mortice latch. The outside lever handle will retract the latch after a correct code is entered. The spring loaded latchbolt will lock automatically when the door is closed. Internal doors and external doors. Lever handle lock for doors hung on the left or right. Use in offices / schools / warehouses / hospitals / care homes / nurseries / hotels / leisure facilities / the home. Code Free access option on the keypad. In Code Free mode the outside lever will retract the latchbolt without using a code. This option is ideal for day to day use when punching in a code is not necessary e. External doors in a school with high traffic. Supplied with a random code commencing with the’C’ clear button. To change the code after fitting, the lock must first be removed from the door. The code is non sequential, that is the code can be entered in any order e. 1234 can be 4321 or 1342 or whatever is the most convenient sequence. With the 11 buttons a total of 2,047 different codes are available, any of which may be entered in any order. Body Material: Zinc Alloy Codes: 8,191 non sequential codes available Code free option: CL515 Code change method: Requires removal of lock from door Code in / code out: No Code storage: Single code Door thickness: 35mm – 65mm (1 3/8″ – 2 1/2″) Non handed: Lock will fit doors hung on the left or right Spindle type: 2 part 8mm (5/16) spring loaded spindle Suitable for: Internal and external use Type: Tubular mortice latch.