• Silver Teltonika TRB255 industrial IoT gateway with Ethernet ports
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Teltonika

Teltonika TRB255 | Industrial IoT Gateway, LTE Cat M1, RS232/RS485

Teltonika TRB255 | Industrial IoT Gateway, LTE Cat M1, RS232/RS485

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TRB255

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Description

The Teltonika TRB255 is a compact industrial IoT gateway with LTE Cat M1, NB-IoT and EGPRS cellular connectivity, dual SIM failover and a 10/100 Ethernet port. It includes RS232 and RS485 serial interfaces, configurable digital I/O, an analog input and GNSS on a 16-pin connector block, making it well suited to connecting legacy and modern industrial equipment in remote monitoring and control deployments.

The TRB255 runs RutOS for advanced networking, with Modbus, SMS control, firewall and OpenVPN support, plus Teltonika RMS for remote management. An aluminium housing with DIN rail mounting, a 9-30 VDC power input and an operating range of -40 °C to 75 °C suit it to demanding industrial environments.

Features

- RutOS-based software for advanced networking
- Modbus, SMS control, firewall and OpenVPN
- Auto APN and band management
- Backup WAN and automatic SIM failover
- Teltonika RMS (Remote Management System) support
- Configurable inputs and outputs for remote monitoring and control
- LPWAN options allow migration if 2G networks are shut down
- Scripting and extension via Lua, C, C++ and Busybox shell

Warranty

Teltonika networking products come with a 24-month warranty from the date of purchase. Batteries are covered under a separate 6-month warranty.
https://teltonika-networks.com/support/warranty-repair

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Cellular: LTE Cat M1 / NB-IoT / EGPRS (2G fallback)
- Dual SIM with auto failover
- 1 x 10/100 Mbps Ethernet LAN port
- RS232 and RS485 serial interfaces
- 3 x configurable digital I/O (D1-D3) plus 1 x analog input (0-30 V)
- GNSS with geofencing (GPS, GLONASS, Galileo, BeiDou, QZSS)
- Power input: 9-30 VDC via 16-pin connector block
- Flash: 16 MB SPI (4 MB available for user)
- Aluminium housing with DIN rail mounting option, IP30
- Dimensions: 83 x 25 x 74 mm; Weight: 165 g
- Operating temperature: -40 °C to 75 °C; humidity 10-90% non-condensing
- SMA antenna connectors

FAQs

Q: What cellular technologies does the TRB255 support?
A: The TRB255 supports LTE Cat M1, NB-IoT and EGPRS, with 2G fallback. Dual SIM support provides automatic failover between SIM cards.

Q: What serial interfaces does the TRB255 provide?
A: It includes both RS232 and RS485 serial interfaces, allowing connection to legacy industrial equipment such as meters, PLCs and sensors.

Q: What power input does the TRB255 require?
A: It accepts a 9-30 VDC supply through its 16-pin connector block, which also carries the serial, I/O and GNSS connections.

Q: Can the TRB255 be DIN rail mounted?
A: Yes. The aluminium housing offers a DIN rail mounting option and has an IP30 rating, suiting it to cabinet and panel installations.

Q: Does the TRB255 support remote management?
A: Yes. It supports Teltonika RMS (Remote Management System) for centralised monitoring and configuration, and runs RutOS with Modbus, SMS control, firewall and OpenVPN.

Q: What is the operating temperature range?
A: The TRB255 operates from -40 °C to 75 °C at 10-90% non-condensing humidity, making it suitable for harsh industrial environments.

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