Teltonika

Teltonika TRB256

Industrial NB-IoT Gateway

Black Teltonika TRB256 device with antenna connectors on a red background.

Teltonika TRB256 NB-IoT Gateway

The TRB256 is an industrial 4G LTE NB-IoT gateway designed to be applied to a broad range of IoT solutions. The device is equipped with multiple interfaces, such as I/Os, RS232, RS485, and an Ethernet port, additionally boasting dual SIM functionality for continuous connectivity. This industrial-grade gateway also supports the 450 MHz frequency band, offering superior LTE signal penetration compared to standard frequencies, making it an optimal choice for a diverse range of M2M applications.

Teltonika TRB256 NB-IoT Gateway Features

Millbeck are a Teltonika Diamond Distributor.

Connectivity

4G/LTE Cat M1/Cat NB1, NB2/EGPRS

450 MHz BAND

Greater LTE signal penetration and increased connectivity coverage

DUAL SIM

Auto-failover, backup WAN, and more switching scenarios

Interfaces

Ethernet, I/Os, and Serial (RS232, RS485) interfaces with 16-pin terminal block

Vertical pattern of small gray dots on a white background, denser at the left fading towards the right.
Vertical pattern of small gray dots on a white background, denser at the left fading towards the right.

Why Connect with Millbeck

Millbeck specialises in the cellular hardware and SIMs that sit between an industrial device and the network it depends on. The kind of work where the spec decisions made on day one decide whether the deployment is still online in year five.

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Featured case study

Cellular Connectivity for Smart Building Energy Monitoring

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Resources

Latest news & insights

KB
Oct 1, 2026

What Is Router Staging? A Guide for IoT Rollouts

Router staging means preparing routers and gateways before they reach site, so installers mount and power up rather than configure.

KB
Sep 30, 2026

IoT Antennas Explained

IoT Antennas Explained: Types, Gain, MIMO and How to Choose

Image of a data cabinet with a router inside cabled to an external antenna with IoT Antennas explained and the Millbeck logo
Insights
Sep 23, 2026

Connecting Victron Energy Systems: How We Use Proroute H685 4G and 5G Routers

How to connect a Victron Cerbo GX over 4G or 5G. What Victron recommends, why the Proroute H685 suits unattended sites, and how to provision the IoT SIM for remote access.

Millbeck, Proroute and Victron logos on a blue background