Teltonika Router - TRB255

Teltonika Router - TRB255

TRB255 can be used to integrate modern and legacy industrial equipment into one solution via RS232, RS485 & Ethernet interfaces.

This industrial LTE Cat M1 & NB-IoT gateway is backward compatible to EGPRS (2G) networks. It can still be used with 2G network, however in case it gets shut down, there is a possibility to switch to LPWAN connectivity options.

TRB255 has a wide range of industrial and networking features such as Modbus, SMS control, Firewall, OpenVPN and more.

This product is compatible with the Teltonika Networks Remote Management System (RMS).


  • Mobile module: LTE (Cat M1) / NB-IoT / EGPRS
  • CPU: Qualcomm QCA9531, MIPS 24kc, 650 MHz
  • Memory: 16 MBytes Flash, 64 MBytes RAM
  • Powering option: 16 pin terminal, 9-30 VDC
  • SIM: 2 x Internal SIM holders (2FF)
  • Antenna connectors: 1 x SMA for mobile, 1 x SMA for GPS
  • Ethernet: 1 x 10/100 Ethernet port
  • GNSS: GPS, GLONASS, BeiDou, Galileo, QZSS
  • Inputs/Outputs: On 16 pin socket: 3 x Digital input/Digital open collector output (configurable), 1 x Analog input
  • Serial: 1 x RS232, 1 x RS485
  • Status LEDs: 3 x Connection type, 3 x Signal strength, 2 x Ethernet, 1 x Power
  • Operating temperature: -40 °C to 75 °C
  • Housing: Aluminium housing with DIN rail mounting option
  • Dimensions (W x H x D): 83 x 25 x 74 mm
  • Weight: 165 g


  • Operating system: RutOS (OpenWrt based Linux OS)
  • Mobile features: Multiple PDN, Auto APN, Band lock, SIM switch, Operator black/white list, Data/SMS limits
  • Network protocols: TCP, UDP, IPv4, IPv6, ICMP, NTP, DNS, HTTP, HTTPS, FTP, SMTP, SSLv3, TLS 1.3, ARP, PPP, DHCP, Telnet
  • Monitoring and Management: WEB UI, CLI, SSH, SMS, TR-069, SNMP, JSON-RPC, MQTT, RMS
  • Connection monitoring: Ping Reboot, Wget reboot, Periodic Reboot, LCP and ICMP for link inspection
  • Cloud solutions: RMS, FOTA, Telenor, Azure IoT Hub, Cloud of Things, Cumulocity, ThingWorx
  • NTP: NTP Server, NTP Client, Sync with: External NTP server, GNSS, Mobile operator
  • GNSS: NMEA forwarding, AVL, Geofencing
  • Modbus: TCP slave, TCP master, RTU master, RTU gateway, Modbus over MQTT
  • Serial: Console, Over IP, Modem, NTRIP, Modbus
  • Administration: Multi user, Configuration profiles, Diagnostics, logs, Configuration backup
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Item number: TRB255

Please inquire about stock before ordering!