Profile: Marl International Ltd specializes in the design, manufacture & supply of visible LED indication, illumination, components and systems. Our LED lighting porducts include bulbs, track lighting & plate downlights, room & office lighting and vandal resistant fit. LUMOluce power LEDs have a output of 125 lumens for warm white and 190 lumens for cool white. The effective lens/reflector combination will produce a light output of 650 lux at a distance of 1 meter with a viewing angle of 40° for a 2.5 watt cool white LED module. The 721 series SRCL LED lamp is a solid-state replacement indicator for the conventional 100VAC 33W filament bulb is used in the signal head units for underground railway signalling.