Specifications: 1) Model: 1 x 20W, 1 x 30W, 1 x 40W 2) Lamp tube: T8, T9 3) Power source: 220 - 230V, 50Hz / 110 - 127V, 60Hz 4) Material: sheet iron, without cover, with reflector 5) Ballast: magnetic 6) Low power consumption, no flash and long life 7) Applications: houserooms, classrooms, shops, supermarkets, plants, luxurious hotels