Wi-Fi MAC Filter Switch:you can set Black List, White List or Disable.
Black List: Users who connect to the blacklist can not access the Internet. You can add the MAC address you want to add to the blacklist; you can also remove the user from the blacklist.
White List: Users who are white list can access the Internet. You can increase the MAC address of the user who allows the Internet, but also in the white list of users to delete.