PhytoMAX-4 4S

Black Dog LED’s PhytoMAX-4 4S is a compact, actively cooled LED grow light drawing 250 watts and producing 531 µmol/s (PBAR). It uses the brand’s 8‑color Phyto‑Genesis Spectrum, including approximately 3% UV and far‑red/IR content, and is dimmable via 0–10 V from 15–100%. The 4S measures 37 x 37 x 11 cm and weighs 10.9 kg. The fixture carries UL 1598/8800, ETL, CE, FCC, and RoHS certifications and has a stated lifetime of over 70,000 hours. Black Dog lists a PBFD/PPFD coverage calculator rather than fixed footprints; retailers place the 4S at about 2' x 2' for flowering and up to 2.5' x 2.5' for veg. The unit integrates 112 LEDs behind a high‑transmission glass lens and includes V‑hooks and ratcheting rope hangers for installation.