The LED Line Up Light is a uni-directional white LED light source which marks the centreline of the runway for pilots of approaching aircraft.The typical peak intensity is 40 candela. The beam width is 40° FWHM in azimuth and 0° to 25° in elevation. Dimming control provides continuous adjustment from 8V to 18V; less than 5V is off and greater than 18V is full brightness. The light is NVG friendly and therefore suitable for use with aircraft being piloted using night vision goggles.