Philips MASTER SOX PSG

A range of Philips MASTER SOX PSG Light Bulbs. These low pressure sodium vapour lamps are maintained by a solid-state getter for highest reliability over life. Featuring stable power consumption, shorter run-up time, higher efficacy and better lumen maintenance and lamp life these lamps produce a Monochromatic yellow colour with non-existent colour rendering and are perfect for road lighting, railway yards and crossings, airports, harbours and docks, quarries, foundries and tunnels, security and orientation lighting.