Teltonika TRB255
The Teltonika TRB255 allows for the integration of both modern and legacy industrial equipment through its RS232, RS485, and Ethernet interfaces. This industrial gateway supports both LTE Cat M1 and NB-IoT networks, and is also compatible with EGPRS (2G) networks. Additionally, the TRB255 offers a wide range of industrial and networking features, including Modbus, SMS control, Firewall, OpenVPN, and compatibility with the Teltonika Networks Remote Management System (RMS).
Tech Specs
Click here for the Teltonika TRB255 datasheet.
| Device Specifications | |
|---|---|
| Hardware | |
| Mobile | 4G/LTE (Cat M1), NB-IoT, 2G |
| CPU | Qualcomm QCA9531, MIPS 24kc, 650 MHz |
| Storage | 16 MB Flash |
| Memory | 64 MB 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 RJ45 port, 10/100 Mbps |
| 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 74.2 mm |
| Weight | 165 g |
| Software | |
| 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, SFTP, FTP, SMTP, SSL/TLS, ARP, VRRP, PPP, PPPoE, UPNP, SSH, DHCP, Telnet, SMPP, SMNP, MQTT, Wake On Lan (WOL) |
| Monitoring and Management | WEB UI, CLI, SSH, CALL, SMS, TR-069, SNMP, JSON-RPC, MQTT, MODBUS, RMS |
| Connection monitoring | Ping Reboot, Wget reboot, Periodic Reboot, LCP and ICMP for link inspection |
| Cloud solutions | RMS, FOTA, Azure IoT Hub, Cloud of Things, Cumulocity, ThingWorx |
| NTP | NTP Server, NTP Client, Sync with: External NTP server, GNSS, Mobile operator |
| GNSS features | NMEA forwarding, AVL, Geofencing |
| Modbus | Modbus TCP slave, TCP master, RTU master, RTU gateway, Modbus over MQTT |
| Serial | Serial Console, Over IP, Modem, NTRIP, Modbus |
| Administration | Multi user, Configuration profiles, Diagnostics, logs, Configuration backup |
FAQs
Q1: What is the Teltonika TRB255 and what is it used for?
A: The Teltonika TRB255 is an industrial cellular gateway that provides low‑power NB‑IoT and LTE‑M connectivity, ideal for remote monitoring, telemetry, smart metering, asset tracking, and other IoT or M2M applications.
Q2: Which cellular technologies does the Teltonika TRB255 support?
A: The TRB255 supports NB‑IoT (Narrowband IoT) and LTE‑M (Cat‑M1) cellular standards. These technologies are optimized for low‑bandwidth, energy‑efficient data transfer in IoT deployments.
Q3: What network interfaces are available on the Teltonika TRB255?
A: This gateway includes a 10/100 Mbps Ethernet port for wired network connectivity, allowing local devices to communicate with IoT systems over both cellular and wired networks.
Q4: How is the Teltonika TRB255 powered and installed?
A: The TRB255 is powered via an industrial DC input with a wide voltage range. Its compact and rugged design supports DIN‑rail, wall, or flat surface mounting in cabinets and control panels.
Q5: What physical and environmental features make the Teltonika TRB255 suitable for industrial IoT use?
A: The TRB255 has a rugged housing, dual SIM capability for connectivity resilience, LED indicators for status monitoring, and operates across a wide temperature range to ensure dependable performance in industrial environments.