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Smith Systems Inc. is a qualified ISO 9001 manufacturer of speed, motion and temperature sensors, associated cabling and controls. The company offers a diverse standard product line of threaded and flange-mounted sensors and specializes in creating application specific products designed for long term reliablity in rugged environments. Smith Systems supplies parts worldwide to passenger car and locomotive OEMs, transit authorities, control system integrators and repair facilities. Common applications include speed sensors for Positive Train Stop (PTS), wheel slip control and braking systems, sensors for air, fluid and journal bearing temperature monitoring and appropriate cabling.