Sun System® Etelligent™ controllability options (controller sold separately #902245). The 315 LEC®/CMH lamp (sold separately) creates amazing full color light spectrum out of next-generation ceramic lamps. Higher amounts of beneficial UV and far red spectrums increase the lamp’s growth power to the plants. Ballast has a thermally optimized non-fan cooled aluminum housing that is ideal for commercial environments. Lamp operates at 160 Hz low frequency, square wave, making this electronic ballast highly efficient and designed specifically to drive LEC®/CMH lamps at sustained peak performance. Internal ballast programming will protect unit in instance of open circuit, short circuit, over/under voltage or high temperature exposure. Features internal built-in circuit breaker. This unit is dimmable and can operate a LEC® lamp at 50%, 60%, 70%, 80%, 90% & 100%. Low current, staggered ignition delay feature eliminates circuit inrush overload and protects lamp for increased lumen maintenance. Features compact commercial design to minimize greenhouse natural sunlight blockage. Power cord/plug configuration varies by fixture voltage. 120-240 volt model includes Convertible Smart Volt® Dual Ferrite power cord.