1. Smart Padlock Smart Home: After connect with App, all operations of the smart lock can be done on the app, the operation log also can be viewed on App. You can throw away your bulky set of keys! 2. 2 Ways to Unlock: You can unlock the digital padlock by entering the code on the numeric keypad of the combination lock, or by connecting your cell phone's Bluetooth. 3. Offline passwords are available: You can generate an offline code in the app, so that even if you are far away from the lock, you can tell the offline code to the person who wants to unlock the padlock, so that they have a way to open the lock. 4. Multiple types of passwords can be set: Various types of passwords can be set: one-time passwords, time-limited passwords, permanent passwords, convenient for your management. You can also invite your family members to join this app, so they can use this smart padlock too!