The Photontek SQ300W Pro is a compact, square‑frame full‑spectrum LED fixture for 1.0 x 1.0 m (3.3 x 3.3 ft) grow areas. It draws 310 W and outputs 816 µmol/s at 2.7 µmol/J, with passive cooling and an IP65 rating. The array uses higher‑spec white (around 4000 K), deep‑red 660 nm and far‑red 730 nm diodes, totaling 624 LEDs. An external 0–10 V dimmer with OFF/25/50/75/100% steps is included, and the unit is compatible with the P‑TEK Digital Controller or other 0–10 V controllers. The fixture measures 22.08 x 22.08 x 2.82 inches and weighs about 5.2 kg. Rated lifetime is 60,000 hours. In Europe, the equivalent model is sold as the ATS 300W Pro.
