Bluetooth Electronic Fingerprint Smart Lock

[5-in-1 Keyless To Unlock]: 360° Fingerprint + Password + RFID Card +Bluetooth App(TT Lock) +Key. 

[Easy & Simple Installation]: This door lock is easy to install in minutes all by yourself with just a screwdriver and screws (included) if you follow the introduction carefully. Due to lock size, it may interfere with screen doors. (Excluded: 4AA batteries & Power bank & adaptere).

[Perfect fit Size]: The thickness of th door is between 1-3/8" to 2" (35-50mm); Smart lock fits size door hole both are 2-1/8" (54mm);The backset is either 2-3/8"or 2-3/4" (60 or 70 mm).

[Reversible lever and durable]: can be installed on both right-handed and left-handed doors; made of sturdy zinc materials.

[Customer Service and Warranty]: Smart Lock Team provides excellent customer service to our smart door lock 30-day free return guarantee, 1-year product warranty and a lifetime customer support following the date of purchase. If you have any problems during installation and use, please feel free to contact us.