1.Specially designed for burglarproof doors 2.Integrated cast steel structure 3.Patent fingerprint technology, stylish but simple design 4.High security, yet easy to operate 5.Patent anti-strike alert function 6.Power supply: 4pcs AA batteries; low battery alert function 7.Three unlocking methods: fingerprint, PIN or mechanical key 8.500dpi resolution (PVD) technology optical sensor 9.Memory capacity: 120pcs fingerprints 10.Multi-deadbolt optional 11External standby battery socket
