Westermo Merlin-4609-F2G-T4-S2-DI6-DO2-LV
The rugged and compact Merlin 4600 Series of cellular routers offer high-speed network connections, making them ideal for industrial, smart grid, and trackside applications. By combining its high MTBF and wide temperature range support with many different useful features, found in the below link, you are sure to get a router of the highest quality with the longest possible service life.