Siemens ET 200M
Siemens ET 200M is a modular, rack-based remote I/O station that lets you plug any S7-300 signal, function or safety module straight onto a PROFIBUS or PROFINET network. It keeps the same mounting, wiring and IP20 environmental ratings as the S7-300 , so you can extend a controller up to 100 m away without redesigning panels or changing spare-part stock.