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The lock consists of 3 parts, front cover, backset(lockbody) and rear cover. Both covers are made of constructional Zinc-alloy(Die-cast) . The backset is of an auto-bold system, that is to say, when you close the door, the lock's latch and deadbolt will go out automatically, to make your possessions in the house safer. People could easily change the lock from an Entrance lock to a passage lock by turning a switch on the rear cover, which could spare you the trouble to go and open the door on every knocking.
Besides code lock, We can offer TM card, RF card and Fingerprint lock as well.