... *Φ17159*101*49Features:Using Tri-phosphor Rare Earth Fluorescent Tube with a high luminous efficacy of 70Lm/w, a ... frequent voltage fluctuation.Issued with one year guarantee for tube and two years guarantee for ballast.Application: The ballast ... , shopping malls, stations, restaurants, hotels, supermarkets, schools, and others. Super tri-phosphor powder electricity saving device ESL lotus real power ...