Trouble free operation flicker free ignition and programmed start make this Philips Regulator II High Frequency Ballast a great solution for running 14-35 Watt TL5 fluorescent tubes. This lightweight and slim gear uses 1-10 Volt protocol and offers excellent energy efficiency 1-100% dimming and constant light output independent of mains voltage. This ballast is particularly suitable for remote control and emergency backup installations as well as daylight linking and movement detection applications.