Guest article from Teltonika Networks, with commentary from IoTPortal’s Peter Green at the end.
Beyond LTE: how 5G Redcap fits into today’s IIoT
As industrial IoT deployments grow, businesses face a challenge that goes beyond connectivity speed: how to connect more equipment across more locations without adding unnecessary cost, complexity or maintenance overhead.
The retirement of legacy 2G and 3G networks is accelerating the need to modernise existing connectivity infrastructure. At the same time, the expansion of remote monitoring, industrial automation and smart infrastructure is creating demand for connectivity solutions that can support long-term growth.
Teltonika drives 5G Redcap adoption as a key enabler of more flexible, scalable and cost-conscious industrial connectivity. It brings selected 5G capabilities to applications that need more than basic connectivity but do not require the full performance of conventional 5G.
At a glance
- Why now: The retirement of 2G/3G networks and the growing scale of industrial IoT are driving the need to modernise connectivity across existing and new installations.
- Why 5G Redcap: It bridges the gap between LTE and full-capability 5G, offering a more optimised approach to connectivity for industrial applications with moderate data requirements. As businesses expand connected infrastructure, 5G Redcap provides another option for balancing performance, device complexity and deployment costs.
- Where it fits: Industrial automation, remote monitoring, smart infrastructure and other connected applications that need scalable connectivity without requiring the full capabilities of conventional 5G.
- Teltonika solution: Teltonika offers 5G Redcap connectivity through industrial routers and a Raspberry Pi HAT+, providing options for cellular connectivity in industrial networking applications. These solutions support different equipment integration requirements while offering a balance between connectivity capabilities, complexity and cost.
- The key takeaway: As industrial IoT continues to scale, the objective is not simply to adopt the newest network technology, but to choose connectivity that meets application requirements and supports future growth. 5G Redcap gives businesses another option for future-proofing and expanding industrial IoT without defaulting to the cost and complexity of full-fledged 5G.
5G Redcap: the right fit for industrial connectivity
Industrial connectivity has traditionally involved a trade-off. LTE remains a practical option for many IoT applications, while full-capability 5G supports more demanding use cases. However, not every connected device requires the highest available data rates, low latency or the full capabilities of conventional 5G.
The business value of 5G Redcap for industrial IoT
Connectivity decisions influence equipment costs, system integration, operational efficiency and long-term investment. For industrial businesses, 5G Redcap introduces another consideration: how to get the connectivity capabilities an application needs without investing in unnecessary complexity.
Optimising connectivity costs. Not every industrial application needs full-capability 5G. Redcap reduces device complexity for applications with moderate data requirements, helping businesses avoid investing in connectivity capabilities they do not need. This aligns device costs with actual application requirements while retaining access to selected 5G capabilities.
Scaling across multiple sites. Industrial IoT deployments span factories, utility networks and distributed infrastructure, often with different connectivity requirements at each site. 5G Redcap gives businesses a middle ground between LTE and full-capability 5G, helping standardise connectivity across suitable applications without paying for capabilities they do not need. This simplifies technology selection and makes deployments easier to replicate as operations expand.
Extending the value of existing infrastructure. Industrial equipment often outlasts the cellular networks it relies on. Industrial 5G Redcap routers can connect existing PLCs, meters, sensors and machinery to remote platforms over compatible cellular networks, without requiring a full equipment replacement. This helps businesses modernise connectivity while protecting existing investments, reducing upgrade costs and minimising operational disruption.
Planning for network transitions. With 2G and 3G networks being retired in various markets, businesses need a clear path to modernising industrial connectivity. 5G Redcap provides another option for transitioning to 5G, where compatible 5G Standalone coverage is available, helping align network upgrades with application requirements and equipment lifecycles.
Ultimately, 5G Redcap is not about replacing LTE or making full-capability 5G unnecessary. Its value lies in giving industrial businesses another way to match connectivity to the application, manage investment and modernise infrastructure without adopting capabilities they do not need.
How Teltonika brings 5G Redcap into industrial applications
Teltonika offers three 5G Redcap routers designed for different industrial deployment requirements. They support 5G Redcap and 4G LTE Cat 4, with 5G Redcap connectivity requiring a compatible 5G Standalone network. Their main differences lie in the available interfaces, integration options and network resilience features.
RUT271: Compact connectivity for monitoring and smart infrastructure
RUT271 combines 5G Redcap connectivity with Wi-Fi, two Ethernet ports and digital input/output functionality. Its compact design makes it suitable for installations where space is limited and straightforward equipment integration is a priority.
Typical applications include remote machine monitoring, sensor data collection, smart waste management, utility monitoring and smart-city infrastructure. For example, it can connect smart waste sensors that report container fill levels or industrial equipment that sends operating data to a remote monitoring platform. This allows businesses to monitor equipment remotely, identify issues earlier and reduce the need for routine on-site inspections.
RUT276: Compact connectivity with serial integration and failover
RUT276 combines a compact form factor with features designed for industrial connectivity, including RS232 and RS485 serial interfaces, dual-SIM with automatic failover, and flexible power options: IEEE 802.3af active PoE input, passive PoE input and a wide-range 9-57 V DC input.
It supports industrial protocols such as Modbus, OPC UA and BACnet, enabling integration with industrial automation and building management systems. Optional mounting accessories support installation on a DIN rail, wall or flat surface.
Typical applications include SCADA and telemetry, water and utility monitoring, building management systems, and connecting PLCs or legacy equipment that communicates over serial interfaces. RUT276 is suited to space-constrained installations where existing industrial equipment needs to be connected to a network and automatic failover helps maintain connectivity.
RUT976: Flexible connectivity for complex industrial deployments
RUT976 offers four Ethernet ports, RS232 and RS485 interfaces, multiple inputs and outputs, Wi-Fi, GNSS and dual-SIM functionality with automatic failover. Its wider range of interfaces makes it suitable for applications that require multiple devices, different communication protocols or more advanced integration.
Typical applications include factory automation, predictive maintenance, energy and utility monitoring, remote equipment management and smart infrastructure control. Ethernet and serial interfaces allow different types of industrial equipment to communicate through a single router, while GNSS supports applications that require location information. Dual-SIM functionality with automatic failover can also help maintain cellular connectivity if the primary connection becomes unavailable.
CALYX: Integrated 5G Redcap connectivity for Raspberry Pi HAT+
CALYX brings cellular connectivity directly to Raspberry Pi 4 and Raspberry Pi 5 systems through a dedicated HAT+ expansion board. Available in 4G Cat 4, 5G Redcap and full 5G variants, it gives developers and system integrators the flexibility to match connectivity performance and cost to their application requirements.
The 5G Redcap variant combines 5G connectivity and low latency with a more cost-efficient approach than full-capability 5G. GPIO-based modem control enables power, wake-up and reset management through Raspberry Pi pins, while PCM audio support enables digital audio transfer. Designed for industrial environments, CALYX supports an operating temperature range of -40 °C to +75 °C.
Typical applications include industrial automation, energy and utility monitoring, smart city infrastructure, and embedded systems that need reliable cellular connectivity where Wi-Fi or Ethernet is unavailable or unreliable.
By combining 5G Redcap connectivity with different levels of hardware integration, Teltonika gives industrial businesses a Redcap option for nearly every deployment, from a single sensor to a complex production site. For new installations, this means building on technology designed to stay relevant as networks move toward 5G Standalone, without paying for full-capability 5G that the application doesn’t need.
Peter’s view
I’ve been banging the RedCap drum on this site for a while, so I won’t pretend to be neutral about the technology. Teltonika is right that it is the correct device class for a huge swathe of industrial IoT. Most telemetry, SCADA and monitoring jobs never needed flagship 5G, and Release 17 RedCap finally gives them a native 5G option sized for the job. I’d add four UK-specific notes before anyone rushes out to standardise on it.
Check 5G Standalone by network, not by postcode. Teltonika’s article is careful to say RedCap needs a compatible 5G Standalone network, and that caveat does a lot of work in Britain. RedCap is commercially live on EE and Vodafone. Virgin Media O2 is still building out its SA core, and with VMO2 now under heavy pressure to cut capital spending, I wouldn’t bet on that timetable speeding up. A RedCap router on an O2 SIM today is, to all practical purposes, an LTE Cat 4 router. That fallback is a feature, not a flaw, but choose your SIM strategy with it in mind. Multi-network SIMs or eSIM keep your options open.
Know what the hardware really delivers. RedCap peaks at around 223 Mbps down on these devices, which is plenty for the applications described. But the Ethernet ports on the RUT271, RUT276 and RUT976 are 10/100, so the wired side tops out well below the radio’s headline figure. For telemetry that’s irrelevant. For CCTV backhaul, it’s worth knowing before you promise the customer anything.
Mind the timing. Teltonika’s prices rise by up to 20% from 1 November, driven by the same memory squeeze hitting the whole router market. RedCap still saves money against full 5G, but expect less of a gap against LTE Cat 4 than the original pitch implied. And these devices run RutOS, so the critical CVE-2026-82104 advisory published on 30 October applies to them too. Whatever you deploy, put it on current firmware and keep it there.
CALYX is the one to watch. A RedCap HAT+ for the Raspberry Pi is a genuinely clever move, and as far as I can tell nobody else has one. It turns a Pi into a proper cellular edge gateway with a sensible radio. I’d still want a well-engineered enclosure, a decent power supply and proper storage rather than a hobby SD card before I put one in a utility cabinet for ten years. That’s not a criticism of the HAT, just the honest difference between a prototype and a production deployment.
The bigger picture is that RedCap is the bridge, and eRedCap, the Release 18 variant aimed at replacing LTE Cat-1, is the next step along it. The same 5G Standalone networks support both. If you’re specifying hardware today for a five-to-ten-year life, RedCap with LTE fallback is the sensible default. For a deeper look at how these three routers compare, see our sister site’s RUT271 vs RUT976 comparison, and for the standard itself, my 5G RedCap explainer.
About Teltonika
Teltonika develops and manufactures high-quality networking products for industrial and IoT applications. Its portfolio includes LTE and 5G routers, including 5G Redcap, as well as cellular routers, IoT gateways, Ethernet switches, access points, the Remote Management System (RMS), and embedded systems.
Designed for reliable and secure connectivity, Teltonika devices support a wide range of applications, including industrial automation, manufacturing, transportation, energy and utilities, smart cities, enterprise, retail, agriculture, and security.
Built on European R&D and engineering expertise, Teltonika delivers trusted networking products to customers in 150 countries.
Website: teltonika-networks.com | LinkedIn: Teltonika Networks
