2. Long-life advantages:
High-pressure sodium lamps include light sources, electrical accessories (mainly ballasts, triggers) and lamps. Sodium lamps are used for street lamps with an average life of 1-2 years, as are lamps. The life span of LED street lamp is about 50,000 hours, and road lighting can be used for more than 10 years according to 12 hours per day. High pressure sodium lamp replaces the light source in an average of 1 to 2 years. There are many times the cost of light source purchase, and the street lamp installation location is high. It is very difficult to replace the light source and the maintenance cost is very high.However, LED street lights require little maintenance except for the rare power damage during their service life.So overall, LED street lights have a much longer lifetime than traditional sodium street lights, and the maintenance costs have been greatly reduced.
