Teltonika TRB256
Industrial NB-IoT Gateway

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.
4G/LTE Cat M1/Cat NB1, NB2/EGPRS
Greater LTE signal penetration and increased connectivity coverage
Auto-failover, backup WAN, and more switching scenarios
Ethernet, I/Os, and Serial (RS232, RS485) interfaces with 16-pin terminal block
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.
Specialist
Knowledge
The hardware, SIMs, antennas, and configuration that go into a cellular deployment are specific work. We have spent 25 years specifying it correctly the first time, on projects from single-site failover to multi-thousand-device estates.
Personal
Service
When you call, you reach the people who configure the hardware and manage the SIM platforms we sell. Every customer works with a named account manager who handles the project from hardware selection through to ongoing SIM management.
Multi Network
& Multi-Vendor
Unsteered multi-network IoT SIMs with eUICC support, and hardware sourced across Teltonika, Proroute, Robustel, Milesight, Cradlepoint, Sierra Wireless, and the wider supply chain. The right tool for the deployment, not the only tool we stock.
Connectivity
& Hardware
Routers, gateways, antennas, and SIMs supplied separately or as a single bundled solution. One purchase order, one technical contact, one accountable supplier across the connectivity stack.






Cellular Connectivity for Smart Building Energy Monitoring
Latest news & insights
Millbeck Connecting Renewable Energy at All-Energy 2026 in Glasgow
Millbeck exhibiting at All-Energy 2026 in Glasgow

Teltonika RUTC Series: 4G & 5G Routers That Double as Edge Compute Devices
Teltonika's RUTC series combines 4G and 5G connectivity with real edge compute. Here is how the RUTC40, RUTC41, RUTC42 and RUTC50 compare.

Cellular Connectivity for Solar Farms and Remote Renewable Energy Sites
How resilient cellular connectivity enables remote monitoring, fault detection, and secure access for solar farms and renewable energy installations across the UK.









