Philips Son-T Pia Plus 400w HPS

Flowering plants require high light intensity and a spectrum rich in red wavelengths to support floral development and biomass production. High-pressure sodium (HPS) lamps remain a proven choice for growers seeking reliable light output and consistent performance throughout the flowering stage.

The Philips MASTER SON-T PIA Plus 400W HPS lamp delivers a warm 2000K spectrum with high photosynthetic output, making it well suited to controlled environment horticulture. Philips PIA (Philips Integrated Antenna) technology improves lamp reliability and supports stable operation over an extended service life, helping maintain consistent light performance throughout the growing cycle.

Designed for use with compatible 400W HPS control gear, the clear tubular lamp features an E40 base and operates in any burning position. With a rated lifespan of up to 36,000 hours and a luminous efficacy of 137 lm/W, the MASTER SON-T PIA Plus provides dependable long-term performance for professional lighting installations.

Compatible with 400W electronic and magnetic HPS ballasts fitted with E40 lamp holders.