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TRB142 TRB142 TRB142 TRB142 What's in the box TRB142 TRB142 TRB142 TRB142 TRB142 TRB142 TRB142 TRB142 TRB142

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TRB142 Teltonika RS232 4G/LTE CAT1 Gateway

  • 4G/LTE CAT1 Gateway, and backwards compatible with 3G & 2G
  • RS232 interface for serial communication & remote management
  • x1 Magnetic mount Antenna for 4G/LTE with SMA male connector
  • x1 Micro USB port for virtual network interface
  • x1 SIM Card Slot - Mini SIM-2FF (internal SIM holder)
  • 9W UK Power Supply included
  • Rugged aluminium housing & small compact size of 74.5 x 25 x 64.4 mm
  • Mounting options: DIN-rail, Wall mount, Flat surface, (Additional kits required)
  • Teltonika Remote Management System (RMS) compatible
  • Manufactured in Europe
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TL-TRB142

TRB142 Teltonika Gateway

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TL-TRB142 & 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

Overview

The TRB142 is a compact industrial IoT Gateway designed by Teltonika to bridge legacy industrial equipment and modern LTE networks. In essence, it enables devices with RS232 serial interface that are commonly found in older controllers, meters, or automation systems, to connect to 4G/LTE (CAT 1) cellular networks, with fallback to 3G & 2G.

From a connectivity standpoint, the TRB142 supports 2G, 3G, as well as 4G/LTE CAT1, offering a pathway for serial devices to be brought into IP-connected systems without requiring extensive rewiring or redesign.

Alongside the RS232 port, the TRB142 also features a micro USB port, which can serve as a virtual network interface, and an LTE indoor antenna with SMA male connector for the cellular modem.

The Gateway runs on Teltonika’s RutOS (based on OpenWRT) which gives it full networking capabilities such as VPN, firewall, routing, and remote management via Teltonika’s RMS platform.

Mechanically and environmentally the TRB142 is built for industrial use, as its aluminium housing, wide input voltage range, and operating temperature from -40 °C to +75 °C mean it can work effectively in control panels, automation racks, or remote sites, whilst its small compact size contribute to making the Gateway suitable for installations where space is at a premium.

In terms of typical use-cases, the TRB142 is ideal for connecting serial-based devices, such as older PLCs, RS232 modems, SCADA systems, or remote meters, to a cellular backbone, enabling remote monitoring or control.

In summary, the TRB142 offers a practical, future-proof way to modernise older equipment, by giving it Cellular connectivity with industrial robustness and full networking features. It is particularly well-suited where you may want to maintain existing serial-equipment but need the benefits of IP connectivity, remote access, and secure management.

Specification

Specification Datasheet
Mobile 4G LTE CAT1 up to 10 Mbps Download & 5 Mbps Upload.
3G up to 384 Kbps Download & 384 Kbps Upload.
2G up to 296 Kbps Download & 236.8 Kbps Upload.
Antennas & Connectors x1 Magnetic mount Antenna for 4G/LTE with SMA male connector
(cable length 3metres).
Firewall Port forward, traffic rules, custom rules, TTL target customisation.
Preconfigured firewall rules can be enabled via WebUI, unlimited firewall configuration via CLI, DMZ, NAT, NAT-T, NAT64.
Traffic management Real-time monitoring, wireless signal charts, traffic usage history.
Website filter Blacklist for blocking unwanted websites.
Whitelist for specifying allowed sites only.
SMS & Call Management

SMS:SMS status, SMS configuration, EMAIL to SMS, SMS to EMAIL, SMS to HTTP, SMS to SMS, scheduled SMS, SMS autoreply, SMPP.

Call: Reboot, Status, Mobile data on/off, Output on/off, answer/hang-up with a timer.
Mobile quota control Mobile data limit, customisable period, start time, warning limit, phone number.
Band management Band lock, Used band status display.
Remote management Teltonika Remote Management System (RMS) compatible.
Modbus

Modbus MQTT Gateway: Allows sending commands and receiving data from MODBUS Server through MQTT broker.

Supported modes: Server, Client.

Supported connection types: TCP, RTU (RS232).

Custom registers: MODBUS TCP custom register block requests, which read/write to a file inside the router, and can be used to extend MODBUS TCP Client functionality.

Supported data formats: 8-bit: INT, UINT; 16-bit: INT, UINT (MSB or LSB first); 32-bit: float, INT, UINT (ABCD (big-endian), DCBA (little-endian), CDAB, BADC), HEX, ASCII.
CPU ARM Cortex-A7 1.2 GHz.
RAM 128 MB, DDR2.
FLASH storage 512 MB, SPI Flash
USB x1 Virtual network interface via micro USB.
Micro USB cable included (0.8m).
RS232 RS232 for serial communication. 
DB9 socket.
Input / Output

Output control: HTTP POST/GET, Schedule.

x1 Digital Input 0-5 V detected as logic low, 8-30 V detected as logic high.

x1 Digital Output, Open collector output, max output 30 V, 300 mA.

Events: Email, RMS, SMS.

I/O juggler: Allows to set certain I/O conditions to initiate event.
Power

9W UK Power Supply included.

Connector: 4-pin industrial DC power socket.

Input voltage range: 9-30 VDC, reverse polarity protection; surge protection >31 VDC 10us max.

Power consumption: < 5W.
SIM x1 SIM Card slot (Mini SIM – 2FF), 1.8 V/3 V.
Panel of Gateway needs to be removed to access the SIM Card slot.
Operating temperature -40 °C to 75 °C
Dimensions 74.5 x 25 x 64.4 mm (W x H x D)
Weight 135g
Mounting options DIN rail, wall mount, flat surface, (Additional kits required).
What's in the box • TRB142 Gateway
• 9W UK Power Supply
• x1 Mobile antenna (Magnetic mount, SMA male, 3m cable length)
• Micro USB cable (0.8m cable length)
• Hex key
• Quick Start Guide 
 

Specifications on this product page are correct as of: 31/10/2025.
For more information about this product, please visit the supplier’s website: TRB142
Downloads
Quick Start Guide Click here 31.10.2025
User Manual Click here 31.10.2025
How To Guide: Change APN settings in Teltonika Routers Click here 31.10.2025
TRB142 Teltonika Wiki Click here 31.10.2025
The latest firmware can be found on the Teltonika website Click here 31.10.2025
UK Declaration of Conformity Download here 31.10.2025
EU Declaration of Conformity Download here 31.10.2025
TRB142 Teltonika Certification & Approvals Click here 31.10.2025
EU Declaration of Conformity - Historical Silver model Download here 21.07.2022
Specification Datasheet - Historical Silver model Download here 31.10.2025
Reviews
Brochures
Teltonika Product Comparison Table Click here
TRB142 Sales Flyer - Historical Silver model Download here
Videos
Video Quick Start Guide for Teltonika Gateway TRB142

Video - Teltonika: TRB142 Quick Start Guide

Need some help setting up your new Teltonika Networks TRB142 Gateway? Give this Teltonika quick start guide video a watch, with step by step instructions to help you easily set-up your new gateway for operation.

Remote Managemant System Explained

Article: Teltonika 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/5G routers to IoT gateways to Access Points, RMS can be used to control a wide variety of Teltonika devices with great convenience.

Uninterrupted Monitoring of Industrial Boiler Rooms

Use Case: Uninterrupted Monitoring of Industrial Boiler Rooms using TRB142

 

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