Product characteristics
- Wattage: 18, 37, 56, 91, 135 and 185 W
- Base: BY22d
- Average life: 16,000 h
- Light color: Color perception not possible
- Diameter: 54 and 68 mm
With up to 178 lm/W the low-pressure sodium lamps are among the most efficent lamps. They produce a monochromatic yellow light, which is used in special applications like harbors and water gates, for high-contrast visibility and therefore increased safety in mist and fog.