Teltonika TRB255 | Industrial LTE Cat M1 Gateway | LTE Cat M1 /
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Teltonika TRB255 | Industrial LTE Cat M1 Gateway | LTE Cat M1 / NB-IoT/  EGPRS, LPWAN Modem

Teltonika TRB255 | Industrial LTE Cat M1 Gateway | LTE Cat M1 / NB-IoT/ EGPRS, LPWAN Modem

92,94 GBP without VAT
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Communication type: GPS
LTE category: Cat. M1
Number of LAN ports: 1x 10/100BaseTX (RJ45)
Operating frequency: LTE


Teltonika TRB255 gateway

The Teltonika TRB255 Network Gat eway is a gateway for industrial cellular applications that supports LPWAN connectivity options. The model features flexibility of use with an RJ45 Fast Ethernet interface, serial interfaces(RS232, RS485) and multiple input/outputs. The device supports low-traffic cellular communications for NB-IoT telemetry devices, LTE Cat M1 technology, and is backward compatible with EGPRS (2G) wireless data technology.


Uninterrupted connection and management from the cloud

The Teltonika TRB255 network gateway offers a cost-effective and scalable way to upgrade large amounts of legacy infrastructure or implement new M2M interoperability projects using support for various cellular standards. In addition, built-in GNSS, dual SIM cards and compatibility with Teltonika's remote control system enable not only reliable infrastructure connectivity, but also easy monitoring and management.


Excellent protection against external influences

The device is designed to operate in extreme conditions (on the street, in vehicles), for which its housing is made of aluminum resistant to corrosion and physical loads. Reliability of the gate is also ensured by handling the supply voltage in a wide range(from 9 to 30 V).


Main features and benefits

  • 4G/LTE (Cat M1), NB-IoT, 2G Connectivity
  • Dual SIM with automatic failover, WAN redundancy and other switching scenarios
  • Serial ports Serial communication interfaces RS232 / RS485
  • 9-30 V - wide range of supported supply voltages
  • I/O - multiple inputs and outputs for remote monitoring and management
  • Global Navigation Satellite System GNSS and Geofence


Features / filters
Communication type GPS
LTE category Cat. M1
Number of LAN ports 1x 10/100BaseTX (RJ45)
Operating frequency LTE
LTE bands B1 (2100MHz), B2 (1900MHz), B3 (1800MHz), B4 (1700MHz), B5 (850 MHz), B8 (900MHz), B12 (700MHz), B13 (700MHz), B20 (800MHz), B28 (700MHz), B39 (1900MHz),

Mobile connection
Mobile module LTE (Cat M1) / NB-IoT / EGPRS
SIM cards 2 SIM cards
Automatic switching scenarios: weak signal, data limit, SMS limit, roaming, no network, no data connection
Status Signal strength, connected range, SINR, RSRP, RSRQ, bytes sent/received
Bridge mode Direct connection (bridge) between mobile ISP and device in LAN
SMS SMS status, SMS configuration, sending/reading SMS via HTTP POST/GET, e-mail to SMS, SMS to e-mail, SMS to HTTP, SMS in reply to SMS, scheduled SMS, Auto reply to SMS
Black/white list Black/white list of operators
Multiple DAPs Ability to use different PDNs to access multiple networks and services
Frequency management Display of the status of the used range, range locking
LAN 1 10/100 Mbps LAN port IEEE 802.3, IEEE 802.3 u compliant, supports auto-MDI / MDIX
Routing Static routing, dynamic routing (BGP, OSPF v2, RIP v1/v2)
Network protocols TCP, UDP, IPv4, IPv6, ICMP, NTP, DNS, HTTP, HTTPS, FTP, SMTP, SSL v3, TLS, ARP, PPP, SSH, DHCP, Telnet, MQTT, Wake On Lan (WOL)
VoIP passthrough support NAT assistants of H. 323 and SIP-alg ensuring correct routing of VoIP packets
Call monitoring Ping Reboot, Periodic Reboot, LCP and ICMP for connection control
Firewall Port forwarding, network traffic rules, customs rules
QoS/Smart Queue Management (SQM) Priority traffic queuing by source/recipient, Service, protocol or port, WMM, 802.11e
DDNS Supported> 25 service providers, others can be configured manually
SSHFS Ability to mount a remote file system using SSH protocol
Authentication Shared key, digital certificates, X.509 certificates
Firewall Pre-configured firewall rules can be enabled via web-ui, unlimited firewall configuration via CLI, DMZ, NAT, NAT-T
Prevention of attacks DDOS prevention (SYN protection, SSH attack prevention, HTTP/HTTPS attack prevention), port scan prevention (SYN-FIN, SYN-RST, X-mas, NULL flags, FIN scan attacks)
VLAN Tag-based VLAN partitioning
Control of mobile quotas Custom data limits for both SIM cards
WEB Filter Black list to block unwanted websites, white list to determine allowed sites
Access control Flexible access control for TCP, UDP, ICMP packets, MAC address filters
OpenVPN Ability to run multiple clients and servers simultaneously, 12 encryption methods
IPsec IKEv1, IKEv2, supports up to 4 IPsec VPN tunnels (instances), with 5 encryption methods (DES, 3DES, AES128, AES192, AES256)
PPTP, L2TP Client/server services can run simultaneously
DMVPN A method for building scalable IPsec VPN networks
GRE GRE Tunnel
Serial communication modes
Mode Console, OverIP, Modem, Modbus RTU master, Modbus gateway, NTRIP client
Modbus TCP slave
ID filtering Response to a single identifier in the range [1; 255] or any of them
Allow remote access Allow access over WAN
Non-standard registers Configurable Modbus TCP logging unit that allows reading/writing a file inside the router and can be used to extend the functionality of the Modbus TCP Slave
Modbus TCP master
Supported functions 01, 02, 03, 04, 05, 06, 15, 16
Supported data formats 8 bits: INT, UINT; 16 bits: INT, uint (older or younger bit first); 32-bit: floating-point, INT, UINT (ABCD (byte forward), DCBA (byte forward), CDAB, BADC)
Modbus RTU master
Supported transmission speeds From 300 to 3000000
Supported functions 01, 02, 03, 04, 05, 06, 15, 16
Supported data formats 8 bits: INT, UINT; 16 bits: INT, uint (older or younger bit first); 32-bit: floating-point, INT, UINT (ABCD (byte forward), DCBA (byte forward), CDAB, BADC)
Number of data bits 7 or 8
Number of stop bits 1 or 2
Parity bits No, even, odd
Flow control No, RTS / CTS (only for RS232 interface), Xon / Xoff
MQTT gateway
Mucus Allows sending commands and receiving data from Modbus Master via MQTT broker
MODBUS data to server
Protocol HTTP (S), MQTT, Azure MQTT
Monitoring and management
WEB UI HTTP / HTTPS, status, Configuration, FW update, command line interface, troubleshooting, event log, system log, kernel log
FOTA Firmware update from server, automatic notification
SSH SSH (v1, v2)
SMS SMS status, SMS configuration, sending / reading SMS via HTTP POST / GET
Phone Restart, Status, Enable/disable mobile data, enable/disable output, receive/end with timer
ТР-069 OpenACS, EasyCwmp, ACSLite, Tgem, LibreACS, GenieACS, FreeACS, LibCWMP, friendly technologies, AVSystem
MQTT MQTT Broker, publisher of MQTT
SNMP SNMP (v1, v2, v3), SNMP Trap
JSON-RPC API management over HTTP / HTTPS
Modbus Status / Control Modbus TCP
RMS Teltonika Remote Control Systems (RMS)
IoT platforms
Cloud of Things Enables tracking of: device data, mobile data, network information, availability
ThingWorx Allows tracking of: WAN type, WAN IP carrier name, cellular signal strength, cellular network type
Cumulocity Allows you to track: device model, version and serial number, mobile cell ID, ICCID, IMEI, connection type, carrier, signal strength, WAN type and IP address.
Azure IoT Hub Can send device IP address, number of bytes sent / received / 3G connection status, network channel status, IMEI, ICCID, model, manufacturer, serial number, version, IMSI, SIM card status, PIN status, GSM signal, WCDMA RSCP, WCDMA EC / IO, LTE RSRP, LTE SINR, LTE RSRQ, cell ID, operator, operator number, connection type, temperature, Pin count for Azure IoT Hub server
System characteristics
CPU Qualcomm QCA9531, MIPS 24KC, 650 MHz
Flash memory 16 MB SPI Flash (4 MB user accessible)
Firmware / configuration
WEB UI Update FW from file, check FW on server, configuration profiles, configuration backup, restore point
FOTA Update firmware/configuration from server
RMS Firmware / configuration update for multiple devices
Save your settings Update FW without losing the current configuration
Software configuration
Operating system RutOS (Linux Operating System based on OpenWrt)
Supported languages Busybox shell, Lua, C
Development tools SDK package with provided compilation environment
Location tracking
GNSS GPS, GLONASS, BeiDou, Galileo and QZSS
Directions GNSS coordinates via WebUI, SMS, TAVL, RMS
NTRIP NTRIP protocol (network transmission of RTCM over the Internet Protocol)
Server Software Supported server software TAVL, RMS
Mobile network geolocation GPS-less location, get approximate location from mobile tower on RMS
Geofence Configurable geofencing
Inputs / Outputs
Configurable inputs/outputs 3 configurable inputs / outputs. Digital input 0-6 V is recognized as logic low, 8-30 V is recognized as logic high. Open collector output, max. 30 V, 300 mA
Analogue input 1 Analog input (0-30 V)
Event SMS, Email
Output control HTTP POST / GET, schedule
I/O juggler Allows you to set specific input/output conditions to initiate an event
Industrial Interfaces
RS232 Terminal strip connector: TX, RX, RTS, CTS
RS485 Terminal strip connector: D , D-, R , R- (2 - or 4-wire interface)
Supported transmission speeds From 300 to 3000000
Number of data bits 7 or 8
Number of stop bits 1 or 2
Parity No, even, odd
Flow control No, RTS / CTS (only for RS232 interface), Xon / Xoff
Power supply
Eat 2 pins in 16-pin industrial terminal box
Input voltage 9 - 30 V DC, reverse polarity protection, surge protection / - 1 kV, max. 50 µs
Power consumption Standby Time: <1.2 W, max .: <5 W
Physical interfaces (ports, LEDs, antennas, button, SIM)
Ethernet 1 RJ45 port, 10/100 Mbps
Inputs / Outputs 3 configurable inputs/outputs, 1 analog input in 16-pin terminal box
Status LEDs 3 connection status LEDs, 3 connection power LEDs, 1 power LED, 1 Ethernet port status LED
SIM 2 SIM card slots (Mini SIM-2FF), 1.8 V / 3 V, Dual SIM tray
Power supply 2 pins in 16-pin terminal box
Antenna 1 SMA connector for LTE, 1 SMA connector for GNSS



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