Inline I/O System Phoenix Contact Inline I/O System is characterized by its large number of I/O and function terminals as well as openness for all popular Fieldbus systems and Ethernet networks. Numerous practical features round off the system. The series offers a proven I/O system that excels due to its reliability, easy handling, and flexibility. Phoenix Contact Inline I/O System features a modular design that can be extended with a range of input and output, communication, and function terminals. The 12.5mm modules enable stations to be extended using a minimal amount of space, and a wide range of function terminals enables the flexible and application-specific combination of digital and analog I/O channels. Applications include intelligent communication, safe networking, optimum acquisition, and cost-effective automation with inline ME versions.