TRB255 TRB255 TRB255 TRB255 TRB255 Package contents TL-TRB255 Package contents




Click the image to enlarge

TL-TRB255 - Teltonika Industrial Cellular LTE CAT M1 / NB-IOT / EGPRS Gateway

  • LTE Cat M1 / NB-IoT / EGPRS Communication
  • Configurable Inputs/Outputs for remote monitoring and control
  • GNSS positioning with geofencing functionality
  • RS232/RS485 serial communication interfaces
  • Dual SIM ensures internet connectivity if single operator network stops working
  • Teltonika Remote Management System compatible
  • 18-month warranty
  • Manufactured in Europe

Authorised Distributor


Buy Now


TL-TRB255 Teltonika Gateway

Buy Now

TL-TRB255 & 12 Months Remote Management System Credits

In the 'extra information' section on the checkout page, please provide us with an Admin email address. Teltonika RMS Info


The Teltonika TRB255 is an industrial CAT-M1 4G gateway, featuring an LPWAN modem, a GNSS receiver, a Fast Ethernet port (10/100), a durable 16-pin connector block and 2 digital input/outputs. This gateway supports a wide array of advanced IoT features including a secure and reliable power connector, serial communication and RS232/RS485 interfaces. The TRB255's robust design and future-proofed functionality make it a great choice for any industrial IoT scenarios in which long-term reliability is paramount, and its CAT-M1 functionality allows it to offer strong IoT network speeds with low latency.

The flexibility of the TRB255 allows it to integrate modern and legacy industrial equipment together while operating with a wide range of utilities such as CAT-M1, NB-IoT, SMS control, Firewall services, OpenVPN, IPSec and Remote Management Services. It can even sustain backwards compatibility with EGPRS (2G) networks, allowing pre-existing 2G network systems to continue running should 2G services become unavailable and ensuring long-term viability.

The TRB255 is extremely energy efficient and its frame is robust as well as being small and lightweight, making it highly adaptable and reliable for many scenarios, whether domestic or industrial. This adaptability is enhanced by its ability to be powered via passive PoE, eliminating the requirement that it needs to be installed near a power supply and allowing it to be installed with equipment that's quite out-of-the-way and difficult to reach. It also works well in vehicles, particularly with its GNSS support, and other high-performance industrial scenarios in which reliable long-term continuity is necessary.


Specification datasheet

Comparison Table
Mobile LTE (Cat M1) / NB-IoT / EGPRS
Bridge Direct connection (bridge) between mobile ISP and device on LAN
Status Signal strength (RSSI), SINR, RSRP, RSRQ, EC/IO, RSCP Bytes sent/received
SMS/Call SMS status, SMS configuration, Call utilities
LAN 1 x RJ45 port, 10/100 Mbps, supports auto MDI/MDIX
Configurable I/O 2 x Configurable Digital Inputs/Outputs
  Power Connector 4 pin industrial DC power socket
Input voltage range 9 – 30 VDC (4 pin industrial socket), reverse polarity protection, surge protection >33 VDC 10μ max
PoE (passive) Passive PoE over spare pairs. Possibility to power up through LAN port, not compatible with IEEE802.3af and 802.3at standards
Power consumption < 5 W
Antenna 1 x SMA for LTE
Casing material Aluminum housing
Dimensions 60 mm x 70 mm x 18 mm (H x W x D)
Weight 134g
Mounting options Bottom and sideways DIN rail, Flat surface and direct PCB on DIN-Rail mounting options
Ingress Protection Rating IP30
EU Declaration of Conformity Download here 21.07.2022
UK Declaration of Conformity (UKCA) Download here 21.07.2022
Quick Start Guide Download here 02.07.2020
Teltonika Networks use case catalog Download here 02.09.2021
How to change APN settings in Teltonika routers Click here 03.09.2021
Remote Managemant System Explained

Remote Management System Explained

Teltonika’s Remote Management System (RMS) is a powerful online IoT platform, allowing users to remotely monitor and manage all their compatible Teltonika devices. From 4G routers to IoT gateways to Access Points, RMS can be used to control a wide variety of Teltonika devices with great convenience.