This electronic ballast offers energy savings of up to 25% compared to magnetic models. It features lamp striation andauto-restrike circuitry and cold-start capacity to -20°F when operating standard 17, 25, or 32W lamps. Great for when lamps are not switched frequently during normal operations. Lamps are wired in parallel. The light output ballast factor (BF) is typically 0.88 or 1.0 BF. UL Type CC rating.