The Teltonika TRB255 allows for the integration of both modern and legacy industrial equipment through its RS232, RS485, and Ethernet interfaces. This industrial gateway supports both LTE Cat M1 and NB-IoT networks, and is also compatible with EGPRS (2G) networks. Additionally, the TRB255 offers a wide range of industrial and networking features, including Modbus, SMS control, Firewall, OpenVPN, and compatibility with the Teltonika Networks Remote Management System (RMS).