Robustel LoRaWAN Gateways
Robustel has updated its LoRaWAN gateway lineup with five new products covering indoor, industrial, building automation, and outdoor deployments – all tied together by a common software stack. Here is what the new range means in practice.
LoRaWAN has spent years being described as a technology with enormous potential. Most people working in industrial IoT have heard that pitch. The harder question is whether the hardware and software have matured enough to make large-scale private network deployments genuinely straightforward to build and run. Robustel’s updated gateway portfolio is a reasonable answer to that question. Five products, a shared software platform, and a range that covers most deployment scenarios from a DIN-rail slot in a comms room to a pole-mounted node in a field.
This post works through each product, what it is designed to do, and how the software layers connect them.
The Hardware Range
R1320LGe – Compact Packet Forwarder with eSIM
The R1320LGe is a compact industrial LoRaWAN gateway built for reliable packet forwarding at scale. It collects upstream data from LoRaWAN end-nodes across EU868, AU915, US915, and AS923 frequency plans and forwards it via standard LoRaWAN packet forwarding protocols to any compatible LNS – ChirpStack, The Things Network, LORIOT, Actility, and others running on-premises or in the cloud.
Three backhaul options adapt to the infrastructure available at each site. 4G LTE Cat-4 cellular provides connectivity where wired infrastructure is not accessible. Fast Ethernet connects directly to an existing LAN. PoE-PD (802.3at) on ETH0 allows the gateway to draw power from a PoE-capable switch, removing the need for a separate power run to the installation point – a practical advantage in comms rooms, distribution cabinets, and riser spaces where power outlets are limited.
The eSIM inclusion is significant for multi-site estates. Remote SIM provisioning removes the logistics problem of sourcing and inserting physical SIMs before deployment, and keeps the installation footprint minimal. The R1320LGe is positioned as a packet forwarder – it handles radio collection and upstream delivery, leaving LNS functions to your chosen network server.
R1520LG – Indoor Edge Gateway with Embedded LNS
The R1520LG is an industrial LoRaWAN gateway engineered for building-scale and plant deployments. It combines 4G/LTE cellular and Wi-Fi backhaul with PoE-PD power, letting you place the gateway where RF performance is best. Deploy with your preferred architecture: connect to external LNS platforms via UDP, LoRa Basics Station, or LORIOT, or run the embedded ChirpStack server for full on-device control and send data straight to AWS or Azure using the Edge2Cloud ChirpStack connector with built-in buffering.
Two Ethernet ports (WAN/LAN), dual-SIM, and RS-232/RS-485 simplify integration with existing controllers and BMS/SCADA networks. Based on Debian Linux, the R1520LG can also host applications and when paired with Edge2Cloud Modbus, aggregate wired and LoRa sensors at the edge.
The dual-SIM and dual-backhaul combination matters in practice. Buildings served by a single ISP connection are a single point of failure. The R1520LG can hold SIMs from two operators alongside its wired Ethernet WAN, giving a three-path resilience model without additional hardware.
LG3120e – Industrial Protocol Bridge with Embedded LNS
The LG3120e is where the range steps up in processing capability. Running on RobustOS Pro (Debian 11 Bullseye) on a Quad-core ARM Cortex-A53 at 2.0 GHz with 2 GB DDR4 RAM and 6 GB of SDK-available flash, it processes, filters, and acts on field data locally – reducing cloud dependency and the latency that comes with it. A native LoRaWAN Network Server handles LoRaWAN V1.0.4 Class A and Class C device management on-device across EU868, AU915, US915, and AS923 frequency plans.
MFF2 eSIM alongside a physical Mini SIM (2FF) slot, dual cellular antennas, and dual-band Wi-Fi 6 (802.11 a/b/g/n/ac/ax, 2.4 GHz and 5 GHz) provide flexible backhaul.
The LG3120e integrates LoRaWAN, Modbus, OPC-UA, and BACnet at the edge – meaning it can bridge wireless LoRa sensors and legacy wired instruments into a single outbound data stream without a separate protocol converter. For oil and gas, utilities, or manufacturing sites where existing PLCs and field instruments run Modbus or OPC-UA alongside newer LoRa sensor deployments, this removes a device from the architecture and reduces integration complexity.
Pre-installed device profiles and codecs for major LoRa sensor families enable zero-configuration onboarding – attach a supported sensor and it begins reporting without manual decoder setup.
LG5120 – Building Automation Hub
The LG5120 is the most specialist product in the range. A dedicated KNX TP port and KNXnet/IP over Ethernet connect directly to lighting systems, HVAC controllers, and room management units without a protocol converter. Two isolated RS-485 ports handle Modbus RTU and BACnet MS/TP field devices. M-Bus support adds meter reading capability for heat, water, and electricity sub-metering.
The on-device network server is what matters in the field – if backhaul drops, it keeps working instead of going dark. That observation captures the architectural difference between a smart building LoRaWAN gateway and a simple packet forwarder. For a facilities management application where sensor continuity during a WAN outage matters – think cold chain or HVAC fault alerting – local LNS processing is not optional.
The LG5120 is aimed squarely at system integrators building BMS infrastructure. The combination of KNX, BACnet, M-Bus, LoRaWAN, and Modbus in a single device eliminates a significant amount of panel wiring and intermediate hardware.
OTD6710 – IP67 Outdoor Enclosure
The OTD6710 is an enclosure rather than a standalone gateway, but it deserves separate treatment because it changes what deployment scenarios are practical.
The OTD6710 is a ruggedised waterproof enclosure designed to house Robustel 4G/5G industrial routers and gateways in demanding outdoor environments. A built-in heavy-duty aluminium heat sink manages thermal load without active cooling, preventing performance throttling during sustained operation in high-ambient-temperature conditions. The enclosure body is moulded from UL 746C F1-rated PC 945U resin, providing UV resistance and UL94-V0 flame retardancy for long-term exposure to direct sunlight and temperature extremes.
RF configuration is flexible: up to four external N-type connectors support high-gain fiberglass antennas for extended range, while up to six internal PCB antennas provide a clean, integrated installation where external antennas are not required. Internal pigtails are customisable to SMA or RP-SMA to match the installed device’s antenna ports.
Pair with the R1520LG to create a fully weatherproof outdoor LoRaWAN gateway node for smart metering, precision agriculture, or asset tracking networks. External N-type ports support high-gain fiberglass antennas for maximum coverage across wide-area deployments.
The operating range of -40 to 75 degrees Celsius and IK08 impact rating cover most industrial site conditions. Mounting on poles or structures is practical. This is the piece that brings the indoor gateways into outdoor LoRaWAN coverage roles.
Quick product summary: R1320LGe = compact packet forwarder with eSIM. R1520LG = indoor edge gateway with embedded ChirpStack and dual-SIM. LG3120e = industrial protocol bridge combining LoRaWAN, Modbus, OPC-UA, and BACnet. LG5120 = building automation hub adding KNX and M-Bus. OTD6710 = IP67 outdoor enclosure turning indoor gateways into weatherproof nodes.
The Software Stack
Hardware is only part of what the webinar covers. Robustel’s LoRaWAN proposition is built as much on its software layers as on the radio hardware. Understanding the four software components clarifies how raw sensor data becomes something operationally useful.
RCMS – Fleet Management
At its core is RCMS (Robustel Cloud Manager Service) – a secure, modular cloud platform that delivers rapid device deployment, zero-touch provisioning, fleet-wide monitoring, OTA updates, virtual VPN access, and real-time diagnostics.
For anyone deploying more than a handful of gateways, RCMS addresses the operational cost that otherwise dominates large IoT estates. Over-the-air firmware and config updates across the fleet, zero-touch provisioning on first power-up, and remote CLI access when something needs attention – these are what reduce the truck-roll frequency that makes distributed sensor networks expensive to run. RCMS is free for Robustel devices.
Smart Roaming – Cellular Resilience
Smart Roaming measures real link quality – reachability and latency, not just signal bars – then switches carriers automatically. It raises estate uptime, reduces truck rolls, and is included with Robustel routers at no extra licence cost.
The distinction between signal strength and link quality matters in real deployments. A gateway can show four bars on a carrier while that carrier’s local cell is congested or routing to a broken upstream. Smart Roaming detects actual link failure rather than radio signal, which is the measure that matters for sensor data continuity.
Edge2Cloud – Protocol Integration and Cloud Delivery
Edge2Cloud (E2C) is a collection of software applications that run within Robustel’s RobustOS operating system to provide IoT gateway functionality at both a hardware and software level. It connects legacy industrial protocols such as Modbus, OPC UA, and Siemens S7 to cloud platforms like Microsoft Azure and Amazon AWS.
E2C works as three internal components. Southbound inputs read data from the field over Modbus RTU/TCP and router I/O. A broker decouples field reads from cloud sends. Northbound outputs publish normalised JSON over secure MQTT to Microsoft Azure, Amazon Web Services, or any MQTT endpoint.
E2C includes a data buffering capability which is a critical, and often overlooked, addition to IoT systems based on cellular technology. 3G/4G is not infallible, so having important data cached locally on the router and then forwarded when connectivity resumes adds immense value to customers looking for fidelity of service.
For LoRaWAN specifically, the E2C ChirpStack connector bridges the embedded network server directly to cloud platforms, with buffering. This is not standard in basic LoRaWAN gateways. Most packet forwarders are stateless – if backhaul drops, uplinks during that window are lost. The E2C buffering layer changes that.
E2C Trinity – Unified Protocol Convergence
The webinar references E2C Trinity as the combination of LoRaWAN, Modbus, and OPC-UA data paths converging into a single outbound stream at the gateway. In practice this is most visible in the LG3120e, which runs all three protocol stacks simultaneously. A single gateway can read LoRa wireless sensors, poll Modbus RTU instruments on RS-485, and query OPC-UA servers on the LAN, then deliver a unified JSON payload to your cloud platform. The practical implication: one device, one MQTT connection to your cloud, one fleet management entry in RCMS. No separate protocol converters, no multiple SCADA middleware layers.
Deployment Scenarios
Robustel positions this range across six primary verticals. Each one has a different hardware and architecture answer.
Smart Buildings
The R1520LG and LG5120 are the building choices. Monitor IAQ, temperature, occupancy, and sub-metering to cut HVAC costs. PoE-PD enables optimal placement; use integrated ChirpStack or connect to your preferred LNS. The LG5120 adds KNX and BACnet for full BMS integration without additional hardware.
Utilities and Smart Metering
Collect and aggregate LoRa data from water, gas, and electricity meters. LTE/Wi-Fi backhaul with local buffering ensures reliable readings and straightforward BMS/SCADA or cloud integration. The dual-SIM architecture on both the R1520LG and LG3120e provides the cellular resilience that utility-grade metering infrastructure requires.
Industrial Sites and Manufacturing
The LG3120e is the industrial workhorse. In manufacturing and process environments, LoRa sensors for IAQ, temperature, vibration, and energy sub-metering operate alongside wired PLCs and HMI systems running Modbus or BACnet. The LG3120e bridges both worlds via its dual RS-232/485 ports and E2C Field Suite, unifying wired instrument data and wireless sensor traffic at the edge before forwarding to SCADA or cloud analytics.
Agriculture and Environmental Monitoring
Connect soil moisture, weather, and tank-level sensors via LoRa; LTE/Ethernet backhaul with buffering; forward data to your farm platform; optionally run edge preprocessing in Docker. The R1520LG in an OTD6710 enclosure covers the outdoor coverage requirement. The LG3120e handles larger sites where edge processing power matters.
Oil, Gas, and Distributed Infrastructure
Distributed field assets – wellheads, pressure regulators, pump stations, tank farms – are often too spread out for wired networks and too critical for unreliable connectivity. The LG3120e addresses both constraints: built-in LoRaWAN covers scattered sensor nodes across a site without cabling, while the integrated LNS and E2C Field Suite aggregate LoRa sensor data alongside Modbus or OPC-UA readings from legacy field instruments into a single outbound stream. Local Node-RED logic can trigger DO outputs or SMS alerts on threshold breaches, independently of cloud availability.
Campus and Distributed Sites
Multi-building campuses – universities, hospitals, logistics centres – need coverage across varied building types and outdoor spaces. The combination of R1520LG units for indoor floors and OTD6710-housed units on external poles provides the RF coverage pattern without running fibre to every location. RCMS manages the entire fleet from a single dashboard.
LNS architecture choice matters: Packet forwarder mode (R1320LGe) needs an external LNS. Embedded LNS (R1520LG, LG3120e, LG5120) means the network server runs on-device – data stays local during WAN outages. For critical infrastructure, the embedded LNS is the correct choice.
External LNS Compatibility
Deploy with an embedded LoRa Network Server for simple sites, or plug into leading external LNS platforms – LORIOT, The Things Stack, ChirpStack, Actility – using built-in connectors so you keep data ownership and policy control.
This matters for organisations that have already standardised on a network server platform. The Things Stack, LORIOT, and Actility are common choices for enterprises running shared LoRaWAN infrastructure. Robustel’s gateways operate in standard packet forwarder mode (UDP or LoRa Basics Station) for these deployments – no vendor lock-in on the network server side.
For greenfield private networks, the embedded ChirpStack on the R1520LG and LG3120e is a viable production-grade LNS. ChirpStack is open source, well documented, and integrates with AWS IoT Core, Azure IoT Hub, and MQTT brokers directly.
Who This Is For
The webinar is aimed at distributors, system integrators, solution providers, and customers evaluating LoRaWAN for practical deployments. That framing is accurate. This is not a product launch aimed at individual sensor hobbyists or network operators running LoRaWAN coverage for hire.
The target audience is people who need to build and operate a private LoRaWAN network for a specific application – a hospital campus, a water utility’s meter estate, a manufacturing site’s energy sub-metering programme, or a logistics facility’s cold chain monitoring. The Robustel range covers the hardware. The software stack covers fleet management, protocol integration, cloud delivery, and cellular resilience. The webinar format makes sense for this audience: the products are complex enough to warrant a walkthrough before procurement conversations begin.
If you are new to LoRaWAN and want to understand the underlying architecture before evaluating gateway hardware, IoT Portal’s LoRaWAN explainer covers how the protocol works, UK frequency plans, device classes, and how network servers fit into the stack.
Note on E2C Trinity: The webinar mentions E2C Trinity as a software capability. Based on current Robustel product documentation, this refers to the convergence of LoRaWAN, Modbus, and OPC-UA data paths in a single Edge2Cloud outbound stream – most fully realised in the LG3120e. Verify current feature scope with Robustel directly if this is a requirement for your project.
Summary
Robustel’s refreshed LoRaWAN range is a coherent product family rather than a collection of individual gateway SKUs. Each product has a defined role. The R1320LGe handles low-complexity packet forwarding with eSIM flexibility. The R1520LG covers indoor building deployments with embedded LNS and dual-SIM resilience. The LG3120e targets industrial and infrastructure sites needing multi-protocol convergence. The LG5120 covers building automation with KNX and BACnet native support. The OTD6710 extends indoor models to outdoor pole-mount deployments.
The software stack – RCMS, Smart Roaming, Edge2Cloud, and embedded ChirpStack – applies across all models and provides the operational tooling that makes large sensor estates manageable without large field engineering teams.
If you are evaluating LoRaWAN gateway options for a project in any of the verticals covered here, the webinar is worth attending. It covers real-world deployment architecture rather than specification sheets.
Product information sourced from Robustel’s published product pages and official documentation. Specifications are subject to change – verify with Robustel or an authorised distributor before procurement. E2C Trinity capability should be confirmed directly with Robustel for current feature availability.