Teltonika RUT206 is a compact industrial 4G LTE Cat 4 router designed for control panels and remote assets where serial integration is essential. It provides RS-232 and RS-485 for direct links to metering and automation devices, accepts active and passive PoE inputs, and supports storage expansion via microSD. The device runs RutOS and natively supports Modbus, DNP3 and DLMS/COSEM, streamlining integration with existing OT/IT systems.