[Sensitive Fingerprint Sensor] Fits for most US standard door thickness range: 1 3/8 inch to 2 3/16 inch 35mm-55mm thick. Your Finger is the Key. Smart deadbolt lock bring you a fast and optimal recognition system that can quickly identify your fingerprint in 0.3 seconds.
[4 in 1 Keyless Entry Door Lock] With 300+ users include fingerprint, password, Ic cards + 2 backup keys +one-time password for temporary visitors, the one-time password will be invalid after use.