Why are the new security lights yellow? Are the old white lights still available?
The older fixtures that cast a white light, known as mercury vapor lights, are very inefficient and have been identified by the EPA as harmful to the environment due to mercury content in the bulb. They are no longer sold in the U.S. and components to maintain them are also unavailable. New energy efficient, high-pressure sodium lights have replaced them. The new fixtures cast a yellow light.
