If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. Woodward 5464-643 Discrete Input Module Introduction The Woodward 5464-643 Discrete Input Module is a signal acquisition component used in industrial control systems to monitor digital inputs from field devices. In automation environments, many sensors and switches produce binary *Your Name: *Your Email: *Your Name: *Vdcode: Submit