Live fingerprint unlock, more secure than optical fingerprints, and support password unlock, proximity card unlock, key unlock.Main Features:● Support to view unlock records, family time to open the door and unlock the way you can query to, through the APP● Voltage: 6V DC● Operating temperature: -10 - 55 Deg.C● Connect: ZigBee● B-level cylinder, high-security level, leveraging immediately alarm● Anti-peeping design, so that thieves can not do anything● Support iOS 8.0, Android 4.4 and above● Comes with 8 AA batteriesBrand: AqaraPackage weight: 6.373 kgProduct size: 36.90 x 7.60 x 2.40 cm / 14.53 x 2.99 x 0.94 inchesPackage Contents: 1 x Front Panel, 1 x Back Panel Lock, 1 x Body, 1 x Connecting Plate, 1 x Bolt, 1 x Accessories Kit, 3 x Emergence Key, 8 x AA Battery