SolisTek V2.0 -1000/750/600W Double Ended Digital Ballast 120/240V STK1001DE 1000 Watt Ballast supports a full spectrum of bulbs, ride yourself of Seasonal affective disorder (SAD) - Receive Light Therapy for yourself and plants Ignition ControlTM - The only ballast(s) that will ignite your lamps sequentially, one at a time, with soft start technology for true efficiency SenseSmartTM Technology - (Pre-Ignition Checks) - Solis-Tek ballasts will not ignite without a complete and proper connection Solisboost Overdrive: Contrary to industry standards, SolisBoost will only overdrive the lamp 5% more