[3 in 1 Unlock Ways]The smart door knob has 3 unlock ways, such as fingerprint unlock, App control, emergency back-up keys, is a perfect fingerprint door lock to get keyless entry door lock. [Smarter, Convenient & Securer]The fingerprint door handle door lock support App control, which can easily get fingerprint manage. With bluetooth, you can unlock with your phone. You can check operate records, auto lock, passage mode, privacy mode, help you creat a smarter and much convenient life, keeps your . [Classic upgrade design]The Smart door handle continues the classical door knob design, but it adds fingerprint lock function and modern app control. It is a very perfect fingerprint door knob for bedroom door, office, apartments, hotels, garages. [Easy to Install]The fingerprint door knob can be easily installed with a screwdriver within minutes. The biometric door lock fits most US door, easily replace with existing door locks. Colour:Black Material:aluminum Package Contents: 1 x Fingerprint Door Lock 2 x keys 1 set x Mounting screws 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.