The Teltonika TRM250 is an industrial-grade cellular modem designed for cost-efficient and reliable internet connectivity in IoT, telemetry, and remote monitoring applications. Supporting LTE Cat M1, NB-IoT, and EGPRS technologies, the modem is ideal for low-power and low-bandwidth deployments where stable communication and long-term network availability are essential. LTE Cat M1 supports download and upload speeds of up to 375 kbps, while NB-IoT connectivity provides efficient communication for sensor networks and smart monitoring systems. The modem features a rugged aluminium housing with an external SMA antenna connector for improved signal coverage and stable communication in demanding environments. Compact dimensions of 74.5 x 25 x 64.5 mm and a lightweight 130 g design make the TRM250 suitable for installations where space is limited.

The device operates reliably in temperatures from -40 °C to 75 °C and supports humidity levels from 10% to 90% non-condensing. With IP30-rated protection and support for DIN rail, wall, and flat surface mounting, the modem is well suited for industrial automation, utility monitoring, and remote telemetry projects. The TRM250 includes a Mini SIM slot compatible with 1.8 V and 3 V SIM cards, LED indicators for power and network status, and a microUSB interface for both power and communication. Low power consumption of only 3.6 W maximum makes the modem particularly suitable for energy-sensitive IoT deployments.

The Teltonika TRM250 is designed for easy integration into industrial and embedded systems, offering broad compatibility with multiple operating systems and communication environments. The modem supports Windows Connection Manager with NDIS drivers and is compatible with Windows 7, 8, 8.1, and 10, Windows CE 5.0 and 6.0, Linux 2.6, 3.x, and 4.x versions, as well as Android 4.x to 8.x platforms. Additional support for Gobinet, RIL, and Linux drivers provides flexibility for industrial developers and IoT solution providers. The Global version supports a wide range of LTE and 2G frequency bands for deployment across multiple international operators and regions.

Supported LTE-FDD bands include B1, B2, B3, B4, B5, B8, B12, B13, B18, B19, B20, B26, and B28, while LTE-TDD B39 is supported for Cat M1 connectivity. 2G support includes B2, B3, B5, and B8 bands for additional compatibility in legacy network environments. The modem complies with major international regulatory and safety standards including CE, UKCA, EAC, and EN 62368-1 certifications. Designed for dependable industrial operation, the TRM250 combines reliable connectivity, simple USB integration, and durable hardware in a compact form factor suitable for smart metering, industrial sensors, telemetry systems, and remote monitoring applications.