Short. 1.USB Port emergency back up power:When u run out of power,use power bank connect with USB port to unlock.

2.Virtual password:Add any number before or after the real number.The password still can be recognized and unlock.Prevent from password leak out.

3.Passage mode:When too many visitors coming in and out.Activate this mode to Keep the lock under non-locking mode.

4.Full- auto lock.Press the lock key can locking automatically

5.TTLOCK app control via bluetooth,easy connection and stable system.manage all lock in one app