GeekTale Smart Fingerprint Door Lock Fingerprint Doorknob Entry Door Lock, Fingerprint Unlocking, Mobile App Unlocking, Key Unlocking for Home Hotel Office Apartment Bedroom Silver

Specifcations: Lock Type: ‎Biometric Item DimensionsLxWxH: 6.29 x 2.99 x 2.99 inches Material: Aluminum Color: ‎Stainless Steel/Black Finish Type: Polished Included Components: ‎Lock And Key Shape: ‎Knob Control Method: App, Touch Finish: Polished Silver Smart Doorknobs Perfect combination of the BLE technology and biometric identify technology.  Great for Bedrooms, Cloakroom, Apartments Offices, Hotels Unlock the door through  fingerprint and mechanical key.  Hierarchical management, 5 master user,15 settle user. The master  can add /delete/clear any user fingerprint, easy operation.  Using 4*1.5v standard alkaline batteries.Battery life: exceed 8,000 times under normal use. Working temperature, minus 30 Celsius degress to 45 degree. There are ID for each master user and settle user. Convenient to add or delete fingerprint ;also can press clear button to clear all the record. Set to passage mode at any time. suitable for meeting room and office use. Backup Energy. When in low voltage,can use TYPE C as Backup Energy. Record reading funtion(Audit Trail), with APP can set the users’name and  read up to 30,000 opening record from lock. Valid time function, with APP can set the valid time, in valid time settle user fingerprint can unlock, out the valid time ,only master fingerprint can open the door.