Robustel

Robustel R1520

Industrial Dual-SIM 4G/LTE Router

Black Robustel network device with multiple Ethernet ports and indicator lights on a red background.

Robustel R1520 4G/LTE Router

The Robustel R1520 is a proven, cost-effective industrial 4G router built for real-world IoT deployments where reliability and flexible networking matter. With five Ethernet ports, a rugged design, and a wide 9–36 VDC input range, it drops cleanly into control cabinets, kiosks, remote sites, and light industrial networks delivering stable connectivity without the cost and complexity of larger platforms.

Robustel R1520 4G/LTE Router

Industrial Dual-SIM 4G/LTE Router with 5 x LAN Ports, GNSS, Serial, DI/DO and Analog Input

Dual-SIM Cellular

Global Frequency 4G/LTE, 3G & 2G with Dual-SIM Card support for failover

SKU Options

R1520(s) for standard industrial deployments.
R1520(v) for in-vehicle IoT.

Interfaces

1x WAN, 4x LAN or 5x LAN,1x RS-232, 1x RS-485, 1x DI/DO, 1x AI, GNSS

Operating System

RobustOS – Lightweight Linux kernel with full SDK

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 supporting monitoring and control of solar and renewable energy sites

Resources

Latest news & insights

KB
Jul 31, 2026

Failover and Backup Connectivity

Failover connectivity uses a second network path, usually cellular, so operations keep running when the primary line fails. This guide covers automatic failover architectures, Teltonika's dual modem routers, and why the SIM behind the router matters as much as the hardware itself.

An illustration of networking on a red background with the Millbeck logo on the top left
Insights
Jul 31, 2026

Teltonika Dual Modem Routers for IoT

Why dual modem routers give IoT deployments real redundancy, and how Teltonika's RUTC42, RUTM56 and RUTM52 compare for 4G, 5G and edge use cases.

Image of a Teltonika RUTM56 dual modem router with the Millbeck logo above, on an abstract tiled background
Insights
Jul 31, 2026

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.

Tetonika RUTC50 5G Router Millbeck