This Osram 9 Watt Daylight 2 Pin PLS Compact Fluorescent Lamp is a high quality long life energy saving lamp for use with external control gear. The 11 Watt output of this 2 Pin G23 lamp is the equivalent of a 40W incandescent bulb. This lamp offers savings of up to 80% in energy usage compared to an incandescent lamp and a lamp life of 10000 hours. This bulb is a very popular versatile lighting solution for many domestic and commercial applications.