Lumatek 600W 400V HPS Globe This 400V pulse-start lamp has been engineered for use with Lumatek Ultimate Pro 600W 400V electronic ballast and is produced using high-grade ceramic arc tube technology and specific horticultural gas blend that creates optimal spectral output for healthy plant growth. 400V HPS lamps are more efficient than standard HPS lamps and this allows them to have a 10% increase in light intensity and PAR/PPF output. The PCA ceramic arc tube permits the lamp to operate at higher internal temperatures increasing colour rendering, output and efficiency. PCA resists interaction with the chemicals inside the tube which stabilizes the chemical mix over the life of the lamp, thereby improving colour consistency and PAR/PPF level maintenance. Pulse-start technology enables faster start up & restrike time, longer lamp life and increased lumen maintenance. Key Specifications: Bulb: T46 Lamp Power (W): 600W Power Voltage (V): 240V 50Hz Lamp Current (A): 3.6A Rated Hours: 24,000 CCT (K): 2000 Luminous Flux (lm): 90,000 PAR (micromol/sec): 1100 CRI: 20 Base Designation: E40