The ISH530 V2 is a UK‑built LED horticultural fixture from Invisible Sun using Samsung LM301H white diodes with LH351H deep and far red options. The unit draws 530 W and is driven by a Mean Well HLG‑480 series driver with dimming. Its 700 × 600 × 40 mm passive‑cooled panel carries four LED boards and is specified for a 4 × 4 ft flowering footprint (up to 5 × 5 ft maximum). Retailer testing lists an average PPFD of about 886 µmol/m²/s and overall efficacy around 2.61 µmol/J. Spectrum variants include Type R (660/730 nm red blend) and Type BR (adds 450 nm blue), with optional UVA or far‑red add‑on strips. The LEDs are rated for 50,000+ hours and the fixture is assembled in the United Kingdom.
