ECOSYSTEM® Compact fluorescent digital dimming ballast. T4 4-Pin quad tube or triple tube lamp type. Continuous, flicker-free dimming from 100% to 5%. Compatible with ECOSYSTEM® ENERGI SAVR NODE™ unit, GRAFIK EYE® QS with ECOSYSTEM® unit, POWPAK™ dimming module with ECOSYSTEM® unit and QUANTUM® systems, allowing for integration into an existing/planned ECOSYSTEM® lighting control system. Supports standard 3-wire line-voltage phase control technology. Lamps turn on to any dimmed level without flashing to full brightness. Low harmonic distortion throughout the entire dimming range. Frequency of operation ensures that ballast does not interfere with infrared devices. Inrush current limiting circuitry eliminates circuit breaker tripping, switch arcing and relay failure. Ultra-quiet operation. Protected from miswires of any input power to control lead or from lamp leads to each other and/or ground.