The Teltonika TRM250 is a robust industrial-grade cellular modem designed for reliable internet connectivity in IoT and remote monitoring applications. Featuring support for 4G LTE Cat M1, NB-IoT (Cat NB1), and legacy EGPRS (2G) networks, it provides versatile cellular options to ensure widespread network compatibility.

Housed in a rugged aluminium casing, the TRM250 boasts a compact design measuring 74.5 x 25 x 64.5 mm and weighing approximately 130 g, making it ideal for industrial environments. It connects via a micro-USB interface for both power and data transfer and includes an SMA connector for an external antenna to improve signal reception.

With a wide operating temperature range of -40 °C to +75 °C, this modem is built to endure harsh conditions. It supports mounting options including DIN rail and wall mounting (kits sold separately), enhancing installation flexibility.

The device complies with 3GPP Release 12 standards and delivers data speeds suitable for LPWAN applications—up to 375 kbps downlink/uplink on LTE Cat M1, 32 kbps downlink and 70 kbps uplink on NB-IoT. Status LEDs provide clear power and network activity indication.

Compatible with multiple platforms, the TRM250 offers drivers for Windows, Linux, and Android, including Windows Connection Manager (NDIS), RIL, and Gobinet support. Backed by Teltonika’s extensive support ecosystem, the modem includes access to a dedicated Wiki, firmware updates, and configuration guides.

Ideal Use Cases: Industrial IoT, remote monitoring, smart metering, asset tracking, and other applications requiring stable cellular connectivity in challenging environments.

[Official Product Page](https://www.teltonika-networks.com/products/modems/trm250)