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. Yokogawa EC401-51 S2 ESB Bus Coupler Module High-Speed Backbone for Scalable Yokogawa Distributed Control Systems The Yokogawa EC401-51 S2 ESB Bus Coupler Module is a next-generation communication interface designed for CENTUM VP and FIO-based distributed control architectures. It ac *Your Name: *Your Email: *Your Name: *Vdcode: Submit