The TP-Link MR100 router is a device capable of connecting to the Internet using a nanoSIM card from your telephone provider (ISP).
It has 2 LAN ports, and the normal functionalities of a wired router. In addition, one of the LAN ports also has the functionality of an ADSL/Cable connection.
You can set the security PIN when inserting the nanoSIM card, which will be stored as part of the configuration.