Energy-saving, non-integrated compact fluorescent lamps with high luminous efficiency and color rendering make these lamps particularly suitable for many applications. They can be used with electronic and traditional ballasts. The 4-pin connection does not incorporate the starter and radio interference suppression capacitor. The high luminous efficiency makes these lamps particularly suitable for direct and indirect lighting. Possibility of adjusting the luminous flux if used with adjustable electronic ballasts. Designed for the general and functional lighting of shops, offices and hotels. Possibility of use in external lighting systems.