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SCHMERSAL's Series SMS3 safety mat system is designed to safeguard personnel when entering a hazardous area around dangerous machinery. When properly installed with their compatible trim kit and safety controller, they satisfy Safety Category 3 and all requirements of EN1710(CE), ANSI and OSHA.

The series SMS 3 safety mat consists of two electrodes (steel plates)separated by a layer of compressible elastomeric insulating strips. The insulating strips are capped by a conductive u-shaped strip whose edges overhang the compressible insulator.

Upon the application of pressure (e.g. walking/stepping on the mat), the insulating strips compress allowing the conductive strip to close the normally-open circuit between the steel electrodes. This closure signal is detected by the system's safety controller whose safety output(s) send a "stop" signal to the machinery being approached.