Ensure high performance over a 50000 hour service life and benefit from over 60000 on/off switches on one lamp with this fixed output Philips Performer III Intelligent Ballast that offers energy-efficient sustainable operation of High Output Twin TL5 fluorescent lamps rated at 54/55 Watts. A slim and lightweight yet robust gear it benefits from programmed flicker free start automatic restart and constant light irrespective of mains voltage fluctuations. Additional features include DC emergency operation and overvoltage protection. Typical applications are commercial and retail as well as Class 1 outdoor installations.