The Invisible Sun ISH530 Type R is a UK‑made LED horticultural fixture designed for 1.2 x 1.2 m (4 x 4 ft) flowering coverage, with headroom up to 5 x 5 ft in suitable spaces. Drawing approximately 530 W, it uses Samsung LM301H white diodes paired with 660 nm deep red and 730 nm far‑red to leverage the Emerson effect for faster finishing and increased metabolic activity in bloom. The v2 generation measured 700 x 600 x 40 mm and shipped fully assembled with a Mean Well 480H C2100 driver and external dimming. Average efficacy was listed around 2.61 µmol/J for the series. Invisible Sun rates board life at 50,000+ hours, and the fixture is fully dimmable with a 3 m power cable included.
