... Sensor. Function characteristics1,The fingerprint key stores 64(64 fingerprint keys) and opens a lock, ex-4 fingerprints are ... Fire Retardant, the adopt Stainless steel casting, the lock adopt zinc alloy die-casting, hard credibility7,The hull ... energy effect possessing singly makes product’s life longer9, Lock design using internationally accepted , beautiful generous. SpecificationsFingerprint ...