The Campbell Scientific Cr6 computer was selected for level 1 due to its proven reliability. Campbell Scientific delivers robust computers for data sampling and control. Their computers have been successfully used for projects in cold environments such as long-term monitoring in Greenland, maritime environments with movement and vibrations such as a buoy system in the Caribbean Sea and in systems with strict reliability requirements such as weather stations at military airports. The Campbell Scientific CR6 uses a Renesas RX63N processor with a clock rate of 100 MHz and has 16 general I/O pins with dedicated hardware for support of numerous communication protocols. The CR6 was chosen over other similar products from Campbell Scientific due to the need of I/O ports. The CPU in the CR6 is also among the fastest in their product range.