X20IF1091
The X20IF1091 from B & R Automation features a serial RS232/RS485 interface and supports baud rates from 300 to 115200 bps. Part of the X20 Fieldbus Input Output Modules series, it mounts on a DIN rail and measures 12.5 x 99 x 72 mm. This module includes galvanic isolation and consumes less than 1 W of power.
It operates from -25 °C to 60 °C and stores safely from -40 °C to 85 °C. It can link up to 253 stations across 100 meters. The unit has an IP20 rating and meets CE, UL, and cULus approvals.