Automatic lamp recognition of both High Output and High Efficiency TL5 fluorescent lamps makes this electronic ballast a logistically smart solution for running 28/35/49/54 Watt luminaires. In applications where energy efficiency is paramount and high level switching is the norm this Philips High Frequency Performer Intelligent gear is an excellent choice. Programmed flicker free start constant light irrespective of mains-voltage fluctuations and automatic restart ensure smooth low cost operation. This gear is suitable for class 1 outdoor applications and indoor installations such as offices hospitals supermarkets and schools.