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. GE IS420YDOAS1B Mark VIeS Discrete Output Module Introduction The GE IS420YDOAS1B Discrete Output Module is an industrial‑grade interface designed for integration within GE Mark VIeS automation and control systems. This module translates digital logic commands from the controller into *Your Name: *Your Email: *Your Name: *Vdcode: Submit