Extending lamp life and offering perfect lamp start for applications with motion sensors this Qsram QT FIT5 ballast controls Twin 49 Watt T5 fluorescent lamps over a 50000 hour service life. A proven and efficient choice for modernising existing systems as well as being suitable for emergency lighting systems it is often used in office corridor and public building applications. Additional benefits include automatic restart after lamp replacement and automatic shutdown at end of life.