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Established in 1946, Bach-Simpson™ is a leading supplier of custom electronic instrumentation and control systems for the rail and transit markets. Known for our quality and reliability, Bach-Simpson offers state-of-the-art products tailored to our customer's needs. ISO 9001-2008 design procedures and CMMi Level II software development result in products with exceptional performance and reliability.

celebrating 60 years
Event Recorder Event Data Recorder
Bach-Simpson™ Event Recorders are engineered for maximum flexibility, meeting your immediate needs while allowing for future expandability. Bach-Simpson Event Recorders are accompanied by a complete PC software package that allows service personnel to download and graphically analyze data from the Event Recorder. 
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Traxsyte Video Recorder
The TraxSyte® System integrates Bach-Simpson’s™ FRA and IEEE 1482.1 compliant Event Recorder with Bach-Simpson’s solid state Digital Video Recorder; TraxSyte. 
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Speed Indicators Speed Indicators
Microprocessor-controlled, the Bach-Simpson™ speed indicator has achieved wide acceptance with railroad crews; while it's dependable accuracy and rugged reliability, make it popular with railroad purchasing and maintenance personnel. 
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Axle Alternator Axle Alternator
The Bach-Simpson™ Axle Alternator is designed to translate the rotational speed of a locomotive or transit vehicle wheel and axle into an electrical signal which represents the linear ground speed of the conveyance.
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