Top of the range dimmable ballast featuring a unique 4 setting control. This offers dimming options of 250W, 400W, 600W and a super-lumen setting of 660W. All ballasts are energy efficient and offer low energy options to your customers, ideal for growers who want to cut electricity costs, whilst still achieving surprisingly high yield return. All Ballasts feature a 1 metre mains lead with flying IEC lead for safety and are wall mountable. CE certified and guaranteed.