The Philips HF-P 1 26-42 PL-T/C is a non-dimmable high-frequency ballast to run compact fluorescent lamps between 26w to 42w lamps. This ballast has a flicker free warm-start circuit,50% longer lamp life and an automatic stop circuit (safety stop). The Philips HF-P PL-T range is suitable for Department stores, Supermarkets, Hotels and Hospitals, It is also for use in emergency installations with re-ignition.