Teltonika TRB142 Industrial Rugged Cellular RS232 LTE 4G Gateway
Industrial LTE Gateway for Reliable RS232 Connectivity and Remote Monitoring
The Teltonika TRB142 is a compact industrial-grade LTE gateway designed to provide secure and reliable cellular connectivity for RS232 serial devices. Featuring 4G LTE Cat 1 connectivity, industrial protocol support, VPN security, remote management capabilities, and Teltonika's powerful RutOS operating system, the TRB142 is ideal for connecting legacy serial equipment to modern IoT, SCADA, and cloud-based monitoring systems.
Designed for industrial automation, utilities, retail, smart city, and enterprise applications, the TRB142 enables seamless remote access, monitoring, data acquisition, and control of RS232 devices over cellular networks.
Key Features
Industrial Cellular Connectivity
The TRB142 provides dependable cellular communications with:
- 4G LTE Cat 1
- 3G Fallback
- 2G Fallback
- Single SIM Architecture
- Global LTE Variants Available
Maximum data rates:
- LTE Cat 1: 10 Mbps Download / 5 Mbps Upload
- 3G: Up to 384 kbps
- 2G: Up to 296 kbps
Ideal for remote sites where wired internet infrastructure is unavailable.
RS232 Serial Gateway
The primary feature of the TRB142 is its industrial RS232 interface.
Serial Interface
- 1 × RS232 DB9 Connector
- Serial Console Support
- Serial Over IP
- Modem Mode
- NTRIP Support
- Modbus RTU Support
This allows existing RS232 equipment to be connected to cellular networks without replacing legacy hardware.
Why Choose the TRB142?
The TRB142 is specifically designed for organisations needing reliable remote access to RS232-based devices.
Key advantages include:
- Industrial RS232 Connectivity
- LTE Cat 1 Cellular Communications
- Modbus RTU & TCP Support
- DNP3 Support
- MQTT Integration
- OPC UA Client & Server
- SMS-Based Management
- Remote Firmware Updates
- RMS Cloud Management
- Industrial Temperature Range
- Compact Rugged Design
Industrial Protocol Support
The TRB142 supports a broad range of industrial communication protocols.
Modbus
Supported modes:
- Modbus TCP Client
- Modbus TCP Server
- Modbus RTU (RS232)
- Modbus MQTT Gateway
Supported data formats:
Custom Modbus register blocks are also supported for advanced integrations.
DNP3
Supports:
- Station Mode
- Outstation Mode
- TCP Communication
- RS232 RTU Communication
Suitable for utility and SCADA applications.
OPC UA
Supports:
- OPC UA Client
- OPC UA Server
- TCP Connectivity
Enables integration into modern industrial automation systems.
DLMS/COSEM
Supports:
- Utility Meter Data Collection
- Client Mode
- TCP and RS232 RTU Communications
Ideal for smart metering applications.
MQTT and IoT Connectivity
The TRB142 offers extensive IoT integration capabilities.
MQTT Features
- MQTT Broker
- MQTT Publisher
- Modbus MQTT Gateway
Allows data from RS232 devices to be securely delivered to cloud applications and IoT platforms.
Data to Server
Supports:
- HTTP
- HTTPS
- MQTT
- Azure MQTT
The Data-to-Server function can collect data from multiple sources and transmit it to a central platform using custom Lua scripting.
Cloud Platform Integration
The TRB142 integrates with leading IoT cloud platforms.
Supported platforms include:
Teltonika RMS
- Remote Monitoring
- Configuration Management
- Firmware Updates
- Diagnostics
- Remote Access
Microsoft Azure IoT Hub
- Direct Method Support
- Device Provisioning Service
- Data Publishing
AWS IoT Core
- Cloud Connectivity
- AWS Jobs Support
ThingWorx
Cumulocity IoT
These integrations simplify deployment of industrial IoT solutions.
VPN and Secure Remote Access
Enterprise-grade VPN technologies are built into the TRB142.
Supported VPN protocols:
- OpenVPN
- WireGuard
- IPsec
- GRE
- PPTP
- L2TP
- SSTP
- DMVPN
- ZeroTier
- Tinc
- Stunnel
This allows secure remote access to connected RS232 equipment over public cellular networks.
SMS and Remote Management Features
The TRB142 supports powerful remote management capabilities.
SMS Functions
- SMS Status Reporting
- SMS Configuration
- SMS to Email
- Email to SMS
- SMS to HTTP
- SMS Auto Reply
- Scheduled SMS
Call Functions
Remote call-based actions:
- Device Reboot
- Status Reporting
- Mobile Data Enable/Disable
- Output Control
- Automatic Answer/Hang-up Timer
These features are particularly useful for remote and unmanned sites.
Digital Inputs and Outputs
Certain TRB142 hardware variants include configurable digital I/O.
Configurable I/O
- 2 × Configurable Digital Inputs/Outputs
- Open Collector Outputs
- Input Voltage:
- Logic Low: 0–5V
- Logic High: 8–30V
- Maximum Output:
Event Actions
Can trigger:
- Email Alerts
- SMS Notifications
- RMS Notifications
The built-in I/O Juggler allows custom automation based on I/O conditions.
Security Features
The TRB142 provides advanced security for industrial deployments.
Authentication
- Pre-Shared Keys
- X.509 Certificates
- Digital Certificates
- RADIUS
- TACACS+
Security Functions
- Stateful Firewall
- NAT
- NAT-T
- NAT64
- DMZ
- VLAN Support
- Website Filtering
- Access Control
Attack Protection
- SYN Flood Protection
- SSH Attack Prevention
- HTTP/HTTPS Protection
- Port Scan Detection
Suitable for critical infrastructure applications.
Network Features
Supported networking functions include:
- Static Routing
- DHCP Server
- DHCP Relay
- DDNS
- QoS
- Smart Queue Management
- DNS over HTTPS
- Network Failover
- Network Topology Mapping
- Traffic Monitoring
Supported protocols:
- TCP
- UDP
- IPv4
- IPv6
- HTTP/HTTPS
- FTP
- SMTP
- SSH
- SNMP
- MQTT
- DHCP
- NTP
RutOS Operating System
The TRB142 runs Teltonika's powerful RutOS platform.
Features
- OpenWrt-Based Linux OS
- Package Manager
- SDK Support
- Custom Firmware Development
Supported Development Languages
- BusyBox Shell
- Lua
- C
- C++
- Python
Allows advanced customisation and edge application development.
Hardware Specifications
Processor
Memory
Storage
Cellular Interface
- 1 × SMA LTE Antenna Connector
- 1 × Mini SIM (2FF)
USB
- Micro USB Virtual Network Interface
Status LEDs
- 3 × Network Type LEDs
- 5 × Signal Strength LEDs
- 1 × Power LED
Power Specifications
Input Voltage
Protection
- Reverse Polarity Protection
- Surge Protection
Power Consumption
Suitable for solar-powered and battery-powered installations.
Physical Specifications
Dimensions
Weight
Housing
- Rugged Aluminium Enclosure
Mounting Options
- DIN Rail Mount
- Wall Mount
- Flat Surface Mount
Compact size enables installation inside control panels and equipment enclosures.
Environmental Specifications
Operating Temperature
Humidity
- 10% to 90% RH (Non-Condensing)
Protection Rating
Designed for harsh industrial environments.
Australian LTE Bands
The Australian/New Zealand variant (TRB1421xxxxx series) supports:
LTE FDD
- Band 1
- Band 2
- Band 3
- Band 4
- Band 5
- Band 7
- Band 8
- Band 28
LTE TDD
Compatible with major Australian cellular carriers.
