The Philips HF-P 2 24-39 TL5 is a fixed output high frequenct ballast for use with 2 x 24w or 39w flourescent lamps. This ballast has a flicker free warm start, electrode heating cut off, Low energy consumption and automatic stop circuit (stop start). The Philips HF-P is often used in Department stores, Airports, Railway stations, Hotels and Hospitals. It is also suitable for emergency installations.