The Lutron GRX-TVI is a 010V control interface used to integrate GRAFIK Eye 3000 or compatible control systems with current-sourcing fluorescent ballasts and LED drivers across 100277VAC installations. It accepts forward, reverse, and center phase control inputs and delivers both switching and 010V dimming output per zone. Up to five GRX-TVI units can be daisy-chained to a single zone, enabling control of up to five 16A circuits of electronic dimming ballasts or drivers.