Teltonika TRB255 – Industrial M2M Gateway with 4G LTE / NB-IoT / EGPRS for IoT

Teltonika TRB255 is an industrial LTE Cat M1 and NB-IoT gateway for connecting industrial equipment to IoT networks through RS232, RS485 and Ethernet interfaces. It is used in smart metering, remote monitoring and automation systems where LPWAN technologies provide an energy-efficient and cost-effective alternative to traditional mobile connectivity — including infrastructures transitioning from 2G networks toward next-generation LPWAN.

The gateway supports LTE Cat M1, NB-IoT and EGPRS (2G) simultaneously, ensuring operational continuity during technology transition — devices currently running on 2G can switch automatically to LPWAN without hardware replacement. RS232 and RS485 interfaces allow legacy industrial equipment to connect directly into the IoT network without investment in new infrastructure. Modbus RTU/TCP support provides native compatibility with existing SCADA systems and industrial automation ecosystems.

TRB255 includes SMS control for remote operations in areas without a dedicated management channel, an integrated firewall for protecting industrial communications and OpenVPN for secure tunnels to central platforms. Compatibility with the Teltonika RMS platform enables monitoring, configuration and remote diagnostics across entire gateway fleets in distributed infrastructures.

Recommended for distribution network operators, metering system integrators and industrial companies managing legacy serial equipment and seeking a controlled migration path to LPWAN without disrupting existing operations. TRB255 reduces architectural complexity by consolidating serial connectivity, LPWAN and remote management into a single compact device.