Sonlight AGRO 400W is a dual‑spectrum high‑pressure sodium bulb designed for the full plant cycle in indoor gardens. Rated at 400 W with an E40 base, it outputs about 58,000 lumens and a 2100 K color temperature, providing enhanced red and supplemental blue suitable for both vegetative growth and flowering. Recommended coverage is approximately 100 x 100 cm, with a minimum hanging distance of around 45 cm from the canopy. The lamp measures roughly 30 x 4.8 cm and is intended for use with compatible 400 W HID ballasts, magnetic or electronic. Sonlight’s SLP technology aims to improve reliability and reduce early failures, while the stated lifetime is up to 28,000 hours under typical horticultural use.
