Unleash Serial Data to the Cloud: Teltonika RUT276, RUT145 and DAP145 1

Bringing RS485 and RS232 into the modern, cloud-connected world

Industrial sites run on serial. RS485 and RS232 have kept factories, utilities, energy sites, and building automation systems talking to PLCs and SCADA for decades. They are simple, predictable, electrically robust, and impossible to replace overnight.

The problem: the world has moved on. Cloud dashboards, analytics, RMS monitoring, remote configuration, API-driven management. None of that is possible if your data is trapped inside a serial loop or a dusty cabinet that hasn’t changed since before IoT was even a phrase.

Teltonika’s latest hardware solves this problem without forcing you to rip out legacy equipment. The RUT276, RUT145 and DAP145 take simple serial communication and push it into the cloud over 5G RedCap, wired Ethernet, or industrial Wi-Fi mesh.

Three devices. Three backhaul options. One unified software platform.

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The real challenge: serial devices weren’t built for the cloud

Most industrial assets were installed long before anyone expected them to talk to MQTT brokers or dashboards.

Typical problems:

• No Ethernet port.
• No cellular modem.
• Requires RS485/RS232 and Modbus or BACnet polling.
• Converting to IP normally means media converters, extra boxes, messy wiring, and more points of failure.

If the goal is digitalisation, adding extra failure points defeats the purpose.

Teltonika’s answer

Instead of stacking converters and modems like Lego, Teltonika has done the logical thing:

Serial ports built into the router.
Industrial protocol support built into the OS.
Cloud publishing built into the firmware.

Every device in this trio has:

RS485/RS232
Modbus, DNP3, DLMS, OPC UA, BACnet
MQTT, HTTPS, custom scripting
RMS for remote management
RutOS for consistency across every deployment

That means one playbook, one portal, one firmware family, regardless of whether the backhaul is Ethernet, Wi-Fi, or 5G RedCap.

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The unified software stack: why this matters

Native serial support

No need for external converters. The router talks directly to your PLCs and field assets.

Industrial protocols you actually use

Modbus TCP/RTU, DNP3 for utilities, BACnet for buildings, OPC UA for modern SCADA, DLMS for energy metering.

Data to Server

This is the key feature. It polls the serial device, packages the data, and pushes it to the cloud.
Supports:

• MQTT (AWS, Azure, private broker)
• HTTPS/Webhooks
• Custom scripts for anything weird or proprietary

The result: data in dashboards without touching the PLC program.

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RMS: management at industrial scale

Industrial digitalization isn’t just getting data into the cloud. It’s about avoiding truck rolls.

With Teltonika RMS, you can:

• View device status, data counters, temperature, signal levels
• Push firmware updates across thousands of devices
• Open secure VPN tunnels to PLCs and HMIs remotely
• Configure everything without being physically on-site

Every engineer who has driven two hours to “change a setting” will understand how massive this is.

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RUT276

The serial-to-cloud router for the 5G era

5G RedCap is a game changer: lower cost than full 5G, but faster and more responsive than LTE CAT4/CAT6. Perfect for replacing CAT M1 or older LTE deployments where you need speed and future-proofing.

Best suited for: remote assets needing reliable cellular backhaul.

Key highlights:

• 5G RedCap connectivity (faster than LTE without full 5G cost)
• RS232 + RS485 (native)
• Dual SIM with failover
• Optional eSIM to simplify IoT SIM management
• Compact rugged housing
• Industrial temperature tolerance
• Runs RutOS + RMS

Why it matters

This router reduces the upgrade pain. You don’t throw away equipment. You don’t redesign the system. You simply unlock cloud access through 5G and keep your existing serial device.

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RUT145

Serial expertise with rock-solid Ethernet

Some sites don’t want cellular. They already have Ethernet or fibre and simply need a serial-to-IP translator that fits nicely into a cabinet.

Best suited for: industrial buildings, utilities, energy plants with wired networks.

Key highlights:

• Native RS485/RS232
• Ethernet backhaul
• Optional local Wi-Fi access
• Slim DIN-rail design (important for crowded cabinets)
• Top-entry power terminal to keep wiring clean

Think of it as a hardened industrial gateway for serial environments where cable exists and security is king.

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DAP145

When the barrier is cable… eliminate the cable

The DAP145 is for sites where the serial asset is physically remote or it’s too expensive to run Ethernet.

Best suited for:
Mobile machinery, warehouses, retrofit projects, campuses, outdoor and temporary installations.

Key highlights:

• RS485 port built into the access point
• Pushes data over Wi-Fi – no cabling required
• Wi-Fi mesh support for large sites
• Fast roaming support for mobile assets including AGVs

You can take an isolated device, point a DAP145 at it, and instantly onboard it wirelessly into your network.

This is serial, without trenching, drilling, or conduit installation costs.

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Choosing the right device

Three devices. One ecosystem. Pick based on backhaul… not based on features missing.

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The real benefit: serial data without pain

Most serial-to-cloud projects fail because they become a hardware pile.

Media converter
Cellular modem
Serial server
VPN appliance

Four boxes that must survive vibration, electrical noise, heat, cold, moisture and the occasional forklift.

Teltonika removes three quarters of that and replaces it with one hardened device.

Your wiring becomes simpler.
Your cabinet becomes cleaner.
Your failure points drop dramatically.

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Where this is being deployed right now

• Water and wastewater plants (Modbus)
• Energy metering and DLMS (RS485)
• Solar farms (string inverters + MQTT)
• Building management/BMS automation (BACnet/OPC UA)
• Factory retrofits (RS232 PLCs into cloud SCADA)

In every case, the driver is the same: get the data without replacing what is already working.

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Simple, predictable, scalable

When you standardise on this trio:

• Every device uses RutOS
• Every deployment uses the same configuration model
• Every site appears in the same RMS dashboard
• Firmware is pushed in one action
• Backhaul doesn’t matter

That’s digitalisation done properly.

Not by ripping things out.

By unlocking them.

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Final thoughts

Serial isn’t going away.
Cloud isn’t optional.

The RUT276, RUT145 and DAP145 are Teltonika’s cleanest answer yet to that tension. They don’t replace what works. They extend it.

If your goal is to turn legacy serial infrastructure into a modern, cloud-linked, fully monitored digital system, this trio gives you a standard blueprint that scales.

One stack.
One OS.
One management portal.
Every backhaul covered.