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 NFDR541 Relay Output Module Introduction The Yokogawa NFDR541 Relay Output Module is a reliable interface card designed to provide discrete relay‑type control signaling for automation and process systems such as Yokogawa STARDOM and compatible modular controllers. T *Your Name: *Your Email: *Your Name: *Vdcode: Submit