High-pressure sodium vapor lamps for open and closed luminaires. Product features: Supplies plants with light for photosynthesis. Photon flux: > 90% after 12,000 hours. High-pressure sodium vapor lamp specifically for greenhouse lighting. Product benefits: Shorter production times. Control of flowering. Areas of application: Greenhouses. Suitable for fruit growth by emitting light optimized for photosynthesis. Use only in suitable luminaires.