Lamps signal end of life

Alto high-pressure sodium lamps feature an end-of-life indicator and lead-free bases to bring end users the benefits of mercury and lead source reduction, increased disposal options, and reduced maintenance costs.
By Staff October 1, 1998

Alto high-pressure sodium lamps feature an end-of-life indicator and lead-free bases to bring end users the benefits of mercury and lead source reduction, increased disposal options, and reduced maintenance costs. The end-of-life indicator signals when the lamp requires replacement, while still providing up to 30% of initial light output.

Philips Lighting