HM Pro RB 440 is a full-spectrum LED grow lamp from Harvest Master’s Pro range, built around Edison diodes with additional 660 nm red for bloom support. A Turkish retailer lists 320 W power draw and a 100×100 cm measurement area, with reported PPFD of 1010 μmol·m−2·s−1 at 60 cm and 690 at 80 cm. The unit is rated for 50,000 hours, measures 62 × 30 × 11.5 cm, and weighs 15 kg. The RB naming aligns with Harvest Master’s “Red Boost” series, which describes Dual Full Spectrum + 660 nm and similar components. This compact panel is aimed at mid‑size tents where balanced full spectrum with extra deep‑red is desired, using a Mean Well driver and passive cooling for quiet operation.
