A.New generation of embedded fingerprint authentication technology,provideing good stability in performance. B. using semiconductor sensor with advantage in high precision,quick response,low voltag-consuming. C.Mechanical key to open the door in emergency. D.Easy and simple installation ,which can be directly changed in the same fixing hole of the mechanical lock. E.Up to 99fingerprint memory capacity. FUsing 4 alkaline batteries of LR6(AA),more than 5.000 times operations. G.Electro-motion clutch handle ,avoiding ciolent destory. H.Modern appearance,advanced biomechanical design and easy operation.