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PHILIPS SON-T Pia Green Power Dual 400w high pressure sodium lamp.
High quality high pressure sodium lamp with integrated PIA (PHILIPS INTEGRATE ANTENNA).
- Discharge tube filled with Sodium and Xenon amalgam.
- Completely lead-free lamps (ECO).
- Completely transparent external glass.
- EXTRA high pressure in the discharge tube.
- The highest ratio of growth light per Watt of all SON lamp models.
Philips Son-T PIA bulbs also allow hot restart, which means that there is no need to wait 20 minutes to start the bulb after a power failure, as happens with other HPS bulbs.