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Teltonika TRB142 Industrial Rugged LTE RS232 Gateway

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13/03/2021 £84.10 exc. VAT
100.92 inc. VAT
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Key Features
  • Equipped with RS232
  • 4G/LTE (Cat 1), 3G, 2G connectivity
  • Rugged aluminium housing

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Teltonika TRB142 Industrial Rugged LTE RS232 Gateway

The Teltonika TRB142 comes with a widely used RS232 interface for remote device management. It is equipped with mission-critical LTE Cat 1 capabilities and software based on OpenWRT, hence offering a high degree of customisation. Just like the other TRB series products, it provides a wide range of software features such as SMS control, VPN, IPsec, Firewall, and FOTA support. This gateway is durable, offers a wide range of power supply voltages, and is compatible with Teltonika Networks Remote Management System (RMS).

Teltonika TRB142 Key Features

  • 4G/LTE (Cat 1), 3G, 2G connectivity
  • Rugged aluminium housing
  • Equipped with RS232 for serial communication
  • Wide range of supported power supply voltages
  • Compact size, easy integration
  • Teltonika Remote Management System compatible
Teltonika TRB142 Technical Specifications


  • Mobile module: 4G (LTE) – Cat 1 up to 10 Mbps, 3G – Up to 42 Mbps, 2G – Up to 236.8 kbps
  • 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


  • Network protocols: TCP, UDP, IPv4, IPv6, ICMP, NTP, DNS, HTTP, HTTPS, SSL v3, TLS, PPP, SSH, DHCP, SNMP, MQTT
  • Bridge: Static routing
  • Connection monitoring: Ping Reboot, Periodic Reboot, LCP and ICMP for link inspection, Wget
  • Firewall: Port forwards, traffic rules, custom rules
  • DHCP: Static and dynamic IP allocation
  • QoS / Smart Queue Management (SQM) (planned): Traffic priority queuing by source/destination, service, protocol or port
  • DHCP: Supported >25 service providers, others can be configured manually


  • Authentication: Pre-shared key, digital certificates, X.509 certificates
  • Firewall: Pre-configured firewall rules can be enabled via the WebUI, unlimited firewall configuration via CLI; NAT; NAT-T
  • Access control: Flexible access control of TCP, UDP, ICMP packets, MAC address filter


  • OpenVPN: Multiple clients and a server can run simultaneously, 12 encryption methods
  • IPsec: IKEv1, IKEv2, supports up to 5 x VPN IPsec tunnels (instances), with 5 encryption methods (DES, 3DES, AES128, AES192, AES256)
  • GRE: GRE tunnel
  • PPTP, L2TP: Client/Server services can run simultaneously

Monitoring & Management

  • WEB UI: HTTP/HTTPS, status, configuration, FW update, CLI, troubleshoot, system log, kernel log
  • FOTA: Firmware update from sever, automatic notification
  • SSH: SSH (v1, v2)
  • SMS: SMS status, SMS configuration
  • MQTT: MQTT Broker, MQTT publisher
  • JSON-RPC: Management API over HTTP/HTTPS
  • Modbus: Modbus TCP status/control
  • RMS: Teltonika Remote Management System (RMS) 

System Characteristics

  • CPU: ARM Cortex-A7 1.2 GHz CPU
  • RAM: 128 MB (50 MB available for userspace)
  • FLASH memory: 512 MB (200 MB available for userspace) 

Serial Communication Modes

  • Modes: Console, OverIP, Modem (Full or Partial control), Modbus RTU master, Modbus gateway, NTRIP client

Modbus TCP Slave

  • ID filtering: Respond to one ID in range [1;255] or any
  • Allow remote access: Allow access through WAN
  • Custom registers: Modbus TCP custom register block, which allows to read/write to a file inside the router, and can be used to extend Modbus TCP slave functionality
  • Supported functions: 01, 02, 03, 04, 05, 06, 15, 16
  • 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)

Modbus RTU Master

  • Suported baud rates: From 300 to 115200
  • Supported functions: 01, 02, 03, 04, 05, 06, 15, 16
  • 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)
  • Number of data bits: From 5 to 8
  • Number of stop bits: 1 or 2
  • Parity: None, Even, Odd
  • Flow control: None, RTS/CTS, Xon/Xof

Modbus Data to Server

  • Protocol: HTTP(S), MQTT


  • WEB UI: Update FW from file, check FW on server, configuration profiles, configuration backup, restore point
  • FOTA: Update FW/configuration from server
  • RMS: Update FW/configuration for multiple devices
  • Keep settings: Update FW without losing current configuration

Firmware Customisation

  • Operating system: RutOS (OpenLinux based Linux OS)
  • Supported languages: Busybox shell, Lua, C, C++
  • Development tools: SDK package with build environment provided 


  • Configurable I/O: 2 x Digital Inputs/Outputs
  • Events: SMS status 


  • 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
  • Power consumption: < 5 W 

Physical Interfaces (Ports, LEDs, Anntenas, Buttons, SIM)

  • RS232: RS232 interface, DB9 socket, 5 pin configuration with flow control
  • I/Os: 2 Inputs/Outputs pin on 4 pin power connector
  • USB: Virtual network interface via USB
  • Status LEDs: 3 x connection type status LEDs, 5 x connection strength LEDs, 1x Power LED
  • SIM: 1 x SIM slot (Mini SIM – 2FF), 1.8 V/3 V
  • Power: 4 pin power connector with 2 x configurable Digital Inputs/Outputs
  • Anntenas: 1 x SMA for LTE
  • Reset: Restore factory settings button

Physical Specifications

  • Casing material: Aluminum housing
  • Dimensions: 64.4 x 74.5 x 25 mm (L x W x H)
  • Weight: 135 g
  • Mounting options: Bottom and sideways DIN rail, Flat surface and direct PCB on DIN-Rail mounting options

Operating Environment

  • Operating temperature: -40 °C to 75 °C
  • Operating humidity: 10 % to 90 % non-condensing
  • Ingress Protection Rating: IP30

Regulatory & Type Approvals

  • Regulatory: CE/RED, EAC, RoHS, WEEE


  • Standards: Draft ETSI EN 301 489-1 V2.2.0, Draft EN 301 489-19 V2.1.0, Draft ETSI EN 301 489-52 V1.1.0
  • ESD: EN 61000-4-2:2009
  • RS: EN 61000-4-3:2006 + A1:2008 + A2:2010
  • EFT: EN 61000-4-4:2012
  • Surge protection: EN 61000-4-5:2014
  • CS: EN 61000-4-6:2014
  • DIP: EN 61000-4-11:2004


  • Standards: EN 300 511 V12.5.1, ETSI EN 301 908-1 V11.1.1, ETSI EN 301 908-2 V11.1.2, ETSI EN 301 908-13 V11.1.2


  • Standards:
    - IEC 62368-1:2014(Second Edition), EN 62368-1:2014+A11:2017
    - EN 50385:2017
    - EN 62232:2017

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