The Digi TransPort WR21 is a compact, flexible, low-cost 3G/4G LTE M2M enterprise router.
Its features include:
* Software-defined multicarrier and global 3G/4G LTE support
* License-free enterprise software supporting advanced routing protocols, VPN, logging/authentication, and stateful firewall
* Digi Remote Manager provides centralized configuration, security management, and network analytics
* Dual SIMs and Digi SureLink™ provide redundant connection
* RS-232 serial and 10/100 Ethernet or RS-232/422/485 serial and 2-port Ethernet switch