... 8w,14w,21w,28w 3) Light source T5 Inductance fluorescent lighting fixture Featrue Summary 1.T5 electronic ballast2.voltage:220-240v3.power ... ×28W849 21 3230Strenth (1) Preheating Start, Enlarge the lifetime of fluorescent lamp(2) Wide application Range, 198~264VAc/-15~50°C ...