K-System intrinsic safety (IS) interface modules from Pepperl+Fuchs guarantee reliable, economical signal transmission between field devices and control systems, whether users are implementing one isolating module or integrating a large system. K-System’s Power Rail is an insert in the standard, 35-mm DIN rail. When mounting on it, K-System units are snapped in place. The Power Rail supplies the modules with power, and provides a path for collective error message from individual isolators. Power Rail reduces wiring and maintenance costs because it eliminates the need to daisy chain the wires and simplifies expansion.