The PLT Compact Fluorescent Lamp is very energy efficient saving up to 80% in energy consumption and offering an 8000 hour lamp life 8 x that of an incandescent lamp. This 4 Pin 18 Watt PLT bulb features a Warm White colour temperature ideal for applications where excellent colour rendering is required such as security lights signs bollards cooker hoods and desk lamps. This lamp requires external control gear to operate