The lock has in-built connectivity that can connect with your Wi-Fi to operate it’s own mobile app. You can download and connect it with the door. So, the next time someone comes, you already know someone is at your doorstep just from the notification that your phone will get when the bell is pressed.
Battery is removeable and rechargeable. So, you do not have to worry about buying new batteries every couple of months.
Lastly, the lock can be unlocked using a manual key that is included is the box itself. So, if you have elderly people, or that your battery has ran out but you cannot charge the battery from outside because you do not have any power banks, you can use the key to unlock the door very easily.