HM All In One Pro 840

Harvest Master All In One Pro 840 is an 8‑bar, foldable LED grow light built around Samsung LM281B diodes in dual white (3000K/5000K) with 660 nm deep‑red, 730 nm IR, and 395 nm UV. The integrated, UL‑certified driver and passive cooling simplify installation and keep operation quiet. Rated at 840 W (dimmable), it delivers 2345 µmol/s PPF at about 2.8 µmol/J. Recommended hanging height is 45–90 cm. The fixture footprint is 106×110×4.4 cm and weight is 18.55 kg. Vegetative coverage is up to 215×215 cm; flowering coverage about 185×185 cm. Additional details include IP65 protection, 90–305 V auto‑sensing input, daisy‑chain control for 5–10 fixtures, and a stated lifetime over 100,000 hours, aiming to support full‑cycle cultivation from seed to harvest.