Sylvania’s Groxpress SHP-T 400W E40 is a high‑pressure sodium horticultural lamp for flowering and general plant growth. The official product listing specifies HID technology with an E40 base, a warm 2000 K correlated colour temperature, and a nominal 400 W power draw. It delivers a photosynthetic photon flux around 640 µmol/s and is recommended for small to medium greenhouses and indoor gardens. Typical coverage for a single 400 W unit is about 1 m², making it suitable for 100×100 cm spaces when paired with a compatible reflector and ballast. The lamp weighs approximately 0.153 kg and has a rated average life of 24,000 hours.
