Updated: 24 June 2025
eSIM technology is changing how we connect remote devices. Whether you’re setting up CCTV at a rural location, managing a smart agriculture system, or installing routers in moving vehicles, eSIM can make your life easier.
This guide explains how eSIM works, how it’s different from physical SIM cards, and which Teltonika routers currently support it. You’ll also learn about eUICC, remote SIM switching, and how to use eSIM effectively in real-world projects.
What Is eSIM?
eSIM stands for embedded SIM. Unlike traditional SIM cards that you insert into a slot, eSIMs are built into the device. They’re small chips soldered directly onto the router’s circuit board.
You don’t need to insert or remove anything—eSIMs are programmed remotely with digital profiles provided by your mobile network provider.
What Is eUICC?
eUICC stands for Embedded Universal Integrated Circuit Card. This is the software standard that allows the eSIM chip to store and switch between multiple mobile network profiles.
With eUICC support, you can:
- Remotely add or change mobile networks on the router
- Switch between profiles without touching the device
- Deploy a device globally and manage it centrally
This is especially useful in remote or industrial settings where physical access to the router may be difficult or expensive.
Physical SIM vs Roaming SIM vs eSIM
| SIM Type | Description |
|---|---|
| Physical SIM | A plastic SIM card that must be inserted manually and tied to one network. |
| Roaming SIM | Works across multiple networks so provides built-in failover to an alternative network if the initially connected network becomes unavailable. |
| eSIM (with eUICC) | Embedded chip that can switch between multiple mobile network profiles. |
eSIMs offer the most flexibility. With the right provider, you can use a multi-network eSIM that connects to the strongest available signal and switches networks if one fails.
Teltonika Routers That Support Embedded eSIM (As of 24 June 2025)
Not all Teltonika routers support eSIM. Here are the models that do:
✅ RUT241-eSIM
A compact and reliable LTE router with both a physical SIM slot and an embedded eSIM. The RUT241 eSIM Router supports up to 7 eSIM profiles.
✅ RUTM30-eSIM
An industrial-grade LTE router with eSIM support, ideal for energy monitoring, industrial controls, and environmental sensors.
✅ RUTM52
A powerful dual 5G modem router that supports embedded eSIM. Perfect for high-performance and mobile applications.
✅ RUTM54-eSIM
Another 5G router with full eSIM support. Designed for large-scale bandwidth needs in critical systems.
✅ RUT951-eSIM
An LTE Cat 4 router with embedded eSIM and PoE+ support. Well suited for business internet backup and smart building systems.
Note: Some routers like the RUTX50 or RUT906 only support dual physical SIM cards. They do not include embedded eSIM chips.
Why Use eSIM for Remote Networking?
Here are the key benefits of using eSIM in Teltonika routers:
🔧 Easier Installation
You don’t need to handle SIM cards or visit the site to make changes.
🌍 Remote Provisioning
Change networks or update SIM profiles over the internet—without touching the device.
🔁 Automatic Failover
With multiple profiles on the eSIM, you can switch to a backup network if the signal drops or fails.
🧳 Perfect for Mobile and Remote Sites
Whether it’s a camera tower, a moving vehicle, or a field sensor—eSIM keeps you connected wherever the device is installed.
🔒 Improved Security
eSIMs are built into the router, so they can’t be removed or stolen.
How to Activate and Use eSIM in a Teltonika Router
Let’s use the RUT241-eSIM as an example. The setup process is similar across all eSIM-enabled Teltonika routers.
1. Get an eSIM-Ready Data Plan
Purchase a data plan that includes eSIM support. Your provider will give you an activation code or QR code.
2. Log in to the Router’s Web Interface
Connect to the router via Ethernet or Wi-Fi and go to the login page (usually 192.168.1.1).
3. Select eSIM as the Active SIM Slot
In the mobile settings menu, choose SIM2 (eSIM) as the default SIM slot.
4. Add the eSIM Profile
Navigate to the eSIM Profiles section. Paste the activation code or upload the QR code to install the profile.
5. Save and Connect
Once installed, the router will connect to the selected mobile network using the eSIM.
6. Set Up Automatic Failover (Optional)
You can configure SIM switching rules so the router automatically switches to a backup profile if the signal is lost, or if a data limit is reached.
Real-World Use Cases
📹 CCTV Installations in Remote Locations
Mount a Teltonika router with an embedded eSIM in a secure box alongside your cameras. You can access the footage remotely and switch networks if the signal becomes weak—all without visiting the site.
🚚 Fleet Tracking and Vehicle Connectivity
Use RUTM52 with eSIM for uninterrupted connectivity in vehicles that travel between towns, regions, or countries. The eSIM ensures a strong connection by switching between mobile operators.
🏗️ Construction Sites and Temporary Installations
When you need short-term internet access, eSIM routers like RUTM30 or RUTM54 are quick to set up and reliable. As the site moves, the router simply connects to the best available mobile network.
🌾 Smart Farming
eSIM routers provide long-range, reliable connectivity for sensors and monitoring equipment in rural environments. Great for irrigation systems, weather stations, and livestock tracking.
🏢 Business Failover and IoT Automation
The RUT951-eSIM offers a simple LTE backup option if fixed broadband fails, keeping business-critical services running.
Choosing the Right eSIM Provider
When selecting an eSIM plan, consider:
- Coverage area – Does it work across all the regions your device will operate in?
- Multi-profile support – Can you load and switch between multiple networks?
- Fixed IP or Public IP options – Needed for remote access or VPNs.
- Network failover support – Will it switch if a network drops?
- Self-service tools – Can you activate and manage profiles easily?
Frequently Asked Questions
Can I use eSIM and physical SIM at the same time?
Yes. Many Teltonika routers let you configure both and set switching rules.
Do I need a special portal to manage eSIMs?
Some SIM providers offer web portals to manage profiles. But you can also control eSIMs directly through the Teltonika router’s interface.
Can I switch eSIM providers in future?
Yes. As long as the router supports eUICC, you can remove or replace profiles over the air.
Final Thoughts
eSIM technology gives you the freedom to install Teltonika routers anywhere—without worrying about network coverage or physical SIM handling. With embedded eSIM support now available on a growing number of Teltonika routers, it’s never been easier to manage remote connectivity for CCTV, IoT, smart buildings, and industrial projects.
By choosing the right router and eSIM plan, you’ll gain:
- Reliable and uninterrupted connectivity
- Easier deployments with no physical SIM cards
- Reduced on-site support costs
- Centralised control over every device
If you need help choosing the right eSIM-compatible router or setting up your first profile, we’re here to help.