The Teltonika TRB140 is a compact industrial LTE router. It is often used in automation systems, remote control panels, and energy equipment where space is tight but reliability matters. Our Teltonika TRB140 review looks at how it performs, what it offers, and who should consider using it.

The outer case of the Teltonika TRB140 is made of metal. That alone gives it a serious edge for places where temperature, dust, or minor impacts could damage plastic-bodied devices. The shell also helps with passive cooling. It works in temperatures from -40°C to 75°C, which is enough for most outdoor or factory settings.
Its compact form makes it a good fit for DIN rails, wall mounts, or back panels. Installers don’t need to make space for a full-size router. It sits quietly and stays out of the way.
From our industrial 4G router review sessions, TRB140 installs fast. The screw terminals, antenna slots, and single Ethernet port are all easy to access. This makes field swaps or upgrades quick, which is helpful in remote or high-risk environments where every minute counts.
The Teltonika TRB140 router supports LTE Cat 4, providing download speeds of up to 150 Mbps and upload speeds of up to 50 Mbps. These speeds are enough for most industrial tasks like data logging, remote monitoring, or sending sensor values to cloud dashboards.
Latency in our industrial LTE router tests remained low, and we noticed that packet loss stayed near zero even in poor coverage. That speaks to how well the modem handles weak signals. Once set up, it keeps the link going without the need for resets or manual reboots.
This cellular router for IoT can work with different mobile providers. The built-in fallback options are basic but enough for static locations. You can also connect to remote systems via VPN, which improves security for sensitive deployments.
One downside: there’s only one Ethernet port. This means it won’t route traffic between multiple LAN devices. But that’s not the aim of the TRB140. It connects one thing to one mobile line, and it does that well.
The Teltonika TRB140 router offers a narrow, focused setup. It is not built for full networks. It connects one device, through one port, to the mobile internet. That’s the job. Inside, there’s an LTE Cat 4 modem. It handles 4G, 3G, and 2G. Speeds reach up to 150 Mbps. One Ethernet port. One micro SIM slot. One microUSB.
It runs under 5 watts. Power input from 9 to 30 VDC. Surge protection kicks in at 31 VDC. That helps in unstable power setups. Security is handled by a built-in firewall. It blocks traffic by the rules. You can also set up OpenVPN, IPSec, GRE, or L2TP tunnels. These are enough for most secure links.
You get SMS control and remote management. Teltonika RMS connects everything. From one place, you can update firmware or change settings. It makes large rollouts easier.
There’s no Wi-Fi. No WAN port. It’s a single-SIM slot device. It keeps the list short. But it works. And that’s what people want when the connection matters. In this Teltonika TRB140 review, it still shows why it’s considered one of the best cellular routers for IoT. Simple, strong, and made for real tasks.
The TRB140 is used in:
Energy: connecting smart meters, battery storage units, and solar panel controllers
Transport: managing ticket machines, signal boxes, and remote gates
Retail: linking kiosks, vending machines, or ATMs
Industry: sending machine status updates or SCADA signals
Anywhere that has power but no wired internet, this device can be dropped in. Its small size, strong casing, and stable link make it a go-to choice.
In our Teltonika TRB140 review, we tested it in both urban and rural settings. In a city kiosk, the device held a connection without visible lag. In a wind farm control panel, it delivered logs on schedule despite low signal areas.
Compared to full-size routers, the Teltonika TRB140 router is less flexible, but in the right setting, it’s more stable.
Compared to larger LTE routers, the Teltonika TRB140 is affordable. In many shops, it sells for about $130–$260. This puts it well below other units with dual SIM, Wi-Fi, or multiple LAN ports.
The low price comes with tradeoffs, but in single-device use cases, it’s a smart buy. The power draw is minimal, the form factor fits in tight spaces, and the setup time is short. Looking at industrial LTE routers in the same bracket, few offer the same build strength and OS support. The RMS compatibility adds value too, especially for system integrators or IT teams managing dozens of units.
When reviewing cost over time, this cellular router for IoT shows low failure rates and long uptime. It works silently in the background, which saves money on service visits or IoT hardware swaps.
In our view, the Teltonika TRB140 router fits perfectly with Simbase’s multi-network SIMs, fixed IP plans, and VPN support. When paired with an IoT SIM card that allows multiple provider access, the TRB140 becomes even more stable. This reduces downtime in rural or low-signal areas.
With a Simbase VPN and fixed IP setup, the router can be reached remotely without port-forwarding tricks. That makes life easier for technicians and speeds up updates or fixes.
For partners or system vendors building long-term solutions, the Teltonika TRB140 gives a strong hardware base. It’s small, durable, and trusted by field engineers. For projects that need one device to connect securely and stay live for years, it meets the mark.
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Need reliable remote access? Set up the Teltonika TRB140 with a Simbase SIM and a fixed IP address. Contact us to get started.