The Osram Nav-T Super series.
Nav-T Super high-pressure sodium lamps are suitable for both open and enclosed luminaires and score points with their extremely high luminous efficacy. It is a genuine flowering light source. The extraordinary longevity makes this lamp stand out from other lamps. Even after 20,000 hours of operation, the lamp still provides over 94% of the original light output!
According to the manufacturer, the average life span is up to 32,000 hours. The light spectrum of the illuminant is perfectly suited for flowering plants, because most of the light is between 550 and 700nm wavelength.
All important technical data of this lamp for plant cultivation:
Supply voltage: 200-420V
lamp voltage: 110V
Color temperature: 2000K
luminous flux: 33200 lumen
More info, please!
For all those who want to know more, the manufacturer's data sheet of the Osram Nav-T Super 250W Volt sodium vapor lamp can be found below.