1、Support five unlocking methods: fingerprint, password, IC card, Bluetooth APP, mechanical key, flexible and convenient for using. 2、After entering the wrong password 6 times, the keyboard will be locked for 3 minutes. The mechanical key and Bluetooth can be used to unlock in this state. 3、Privacy lock mode, it make the lock no longer accept fingerprint, card, password or Bluetooth APP to unlock, except for mechanical keys. 4、Virtual password, support enter garbled codes before and after correct unlocking password, effectively preventing peeping. 5、Low voltage alarm. When the battery power is low, the lock will sound a low battery alarm. 6、With USB charging port, simple and convenient. Powered by 4pcs AA batteries (not included), longer standby time. 7、Can set a temporary dynamic password. If you need to unlock the lock remotely, you can set one or a group of dynamic passwords, and the password will automatically become invalid after unlocking. 8、Real‑time monitoring. After the user unlocks, the administrator can check the unlocking record in the APP.