Series of Economic Transformer:20~50W, 20~60W, 35~105W, 180~200W 230V/110V, 50/60 Hz 0.99C Power factor Case dimension: 67*41*28mm, 70*42*28mm, 93*41.5*20mm, 130*42*32mm, 123*30*21mm, 128*37*29mm, 154*44*35mm Features: 1.Adopting high-quality flame-resisting plastic shell, providing excellent fire resistance. 2.4000V high pressure impulse resistance,good insulation,to assure safety. 3.Using imported triode and high-quality electronic components. 4.Less rise in temperature,longer service life. 5.Stable operation and function. 6.Keeping good performance after 40 hours' operation. 7.With German lighting electronic technology, great output power. 8.Possible to add protection of over-loaded, over-voltage, short-circuit and so on,upon your need