The Invisible Sun ISH265 V2 is a UK‑manufactured horticultural LED fixture drawing 270 W. It uses Samsung LM301H white LEDs supplemented by Samsung LH351H diodes, offering 450 nm royal blue, 660 nm deep red and optional 730 nm far red, with Type R and Type BR spectrum options. The fixture measures 700 x 300 x 40 mm and is designed to cover either a 2 x 4 ft or 3 x 3 ft area for full‑cycle growing. Average PPFD is listed at 844.72 µmol/m²/s, and the unit is dimmable with a Mean Well driver and supplied fully assembled. Published efficacy for this version is 2.61 µmol/J.
