The ISH UVA 8 is a supplemental LED board from Invisible Sun designed to add ultraviolet‑A to full‑spectrum grow lighting. The PCB carries eight Seoul UV diodes split across 385 nm, 395 nm and 405 nm to broaden UVA coverage during the 12‑hour light cycle. It is specified for a 4 ft × 4 ft footprint and operates from a 24–28 V DC supply at up to 700 mA, equating to roughly 17–20 W maximum draw depending on driver. The module is intended as an add‑on to existing fixtures and is CE and RoHS marked. Because this SKU is often sold as a bare PCB, ensure adequate heatsinking and an appropriate constant‑current driver.
