Teltonika TRB256 Industrial Rugged Cellular LTE CAT-M NB-IoT Router
Industrial LTE Cat M1 / NB-IoT Gateway with RS232, RS485, GNSS & Dual SIM Connectivity
The Teltonika TRB256 is a compact industrial-grade LTE Cat M1 / NB-IoT gateway engineered for smart metering, industrial telemetry, utility monitoring, environmental sensing, SCADA systems, and low-power IoT applications. Featuring Dual SIM redundancy, RS232 & RS485 serial interfaces, configurable I/O, GNSS tracking, and NB-IoT/LTE-M connectivity, the TRB256 delivers reliable low-bandwidth communication for industrial and remote IoT deployments.
According to the official Teltonika datasheet and flyer, the TRB256 supports LTE Cat M1, NB1, NB2, and EGPRS connectivity, advanced VPN services, industrial protocol integration, and enhanced LTE coverage through support for the 450 MHz frequency band.
Key Features
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LTE Cat M1 / NB-IoT Connectivity
Supports LTE Cat M1, NB1, NB2, and EGPRS for low-power IoT and telemetry applications.
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450 MHz Band Support
Enhanced signal penetration and wider coverage for utilities and remote infrastructure deployments.
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Dual SIM Redundancy
Automatic failover and WAN backup ensure continuous connectivity in mission-critical deployments.
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Industrial RS232 & RS485 Interfaces
Built-in serial connectivity for PLCs, RTUs, smart meters, and industrial equipment.
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Configurable Industrial I/O
Includes 3 configurable digital inputs/outputs and analog input functionality.
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Integrated GNSS Support
GPS positioning with support for geofencing, NTRIP, and NMEA data output.
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Advanced VPN & Security
Supports OpenVPN, IPsec, WireGuard, ZeroTier, and enterprise-grade firewall security.
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Remote Management via RMS
Fully compatible with Teltonika RMS for secure remote monitoring and device management.
Why Choose the Teltonika TRB256?
The TRB256 is ideal for industrial and utility deployments requiring:
- Low-power IoT connectivity
- Long-range LTE coverage
- Remote serial communications
- Utility and telemetry monitoring
- Dual SIM redundancy
- GNSS asset tracking
- Secure VPN networking
- Rugged industrial reliability
Its support for LTE-M, NB-IoT, and 450 MHz networks makes it especially suitable for smart utility and remote infrastructure applications.
Typical Applications
- Smart utility metering
- Water & gas monitoring
- Smart energy infrastructure
- Industrial telemetry systems
- Environmental monitoring
- Remote sensor gateways
- SCADA & PLC connectivity
- Agriculture & irrigation systems
- Transportation telemetry
- Smart city infrastructure
Technical Highlights
Cellular Connectivity
- LTE Cat M1
- LTE NB1 / NB2
- EGPRS support
- LTE Cat M1 up to:
- 588 kbps download
- 1119 kbps upload
- Dual SIM support
- 3GPP Release 14
450 MHz Coverage
Supports low-frequency LTE bands for:
- Improved indoor penetration
- Extended rural coverage
- Utility-grade connectivity reliability
Ethernet
- 1 × RJ45 Ethernet port
- 10/100 Mbps support
- Auto MDI/MDIX crossover
Serial Interfaces
- 1 × RS232
- 1 × RS485
- Serial over IP
- Modbus Gateway
- NTRIP Client
- Console support
Industrial Protocols
Supports:
- Modbus RTU/TCP
- MQTT
- OPC UA
- BACnet
- DNP3
- DLMS/COSEM
- Modbus MQTT Gateway
GNSS & Location Services
Supports:
- GPS
- GLONASS
- Galileo
- BeiDou
- QZSS
- NMEA 0183
- NTRIP
- Geofencing
VPN & Security
Supports:
- OpenVPN
- IPsec
- GRE
- PPTP/L2TP
- SSTP
- WireGuard
- ZeroTier
- DMVPN
- Tinc VPN
- Firewall & VLAN support
I/O Interfaces
- 3 × Configurable digital inputs
- 3 × Configurable digital outputs
- 1 × Analog input (0–30 V)
- I/O event triggers via SMS, Email, RMS
Hardware Platform
- Mediatek 580 MHz MIPS CPU
- 128 MB RAM
- 16 MB Flash storage
Power
- 9–30 VDC industrial input
- Reverse polarity protection
- Surge protection
- Low power consumption:
Physical Specifications
- Aluminium industrial housing
- Dimensions: 83 × 25 × 74.2 mm
- Weight: 165 g
Mounting Options
- DIN rail mounting
- Wall mounting
- Flat surface installation
Operating Environment
- Operating temperature: -40°C to +75°C
- IP30 rated
- 10%–90% non-condensing humidity
Resources:
Teltonika TRB256 Flyer
Teltonika TRB256 Datasheet
Teltonika TRB256 Quick User Guide
Teltonika TRB256 User Guide
Teltonika TRB256 3D Models
