Up to eight conventional sensors with switching outputs can be connected to the field modules with IO-Link. The signals are transmitted to any desired IO-Link master / PLC via one unscreened M12 connection cable. This considerably reduces wiring complexity since conventional parallel wiring of each sensor or actuator to the controller is no longer necessary. It also saves the user a great number of terminals, splitter boxes, input/output cards and cable lines. As opposed to bus systems IO-Link does not require any configuration or addressing. This simplifies the set-up. Excellent electromagnetic stability, a wide temperature range, a high protection rating and a robust housing qualify the device for use in harsh industrial environments.