VIP-ER Interface Modules Phoenix Contact VIP-ER Interface Modules have been developed to expand the breadth of products within the VARIOFACE Professional line, while also addressing customer demand for an interface module with high-speed termination capabilities. VARIOFACE Professional revolutionized interface modules with its unique design that results in a slim, compact, and rugged package. VIP-ER will expand this concept for customers looking to extend beyond the passive feed-through line of modules and come into the world of active interface modules via push-in technology. The Phoenix Contact VIP-ER Series offer the same great features and benefits of the existing VARIOFACE Professional interface modules, but now also incorporate 'active' features like relays and fuses. This further simplifies individual signal control between field devices and upper level controllers.