400W Samsung LM281B LED Grow Light

Engineered for serious results at a smart price. This compact 4-bar 400W fixture delivers high-efficiency photons, even canopy coverage, and rock-solid reliability—everything you need to push vigorous veg and dense, resinous flowers. 

Why growers love it

High efficacy = lower bills: Rated up to 2.9 µmol/J for excellent grams-per-watt performance. That translates to a PPF of ≈1160 µmol/s.

True full-spectrum output: Tuned for all stages. Seedling to harvest, so you can run one light throughout the entire cycle.

Even coverage, fewer hotspots: 4-bar layout spreads light uniformly across your canopy for consistent development. Many units ship with 1,344 LEDs for dense diode packing and smooth PPFD.

Simple, flexible dimming: Onboard steps (25/50/75/100%) plus EXT port for external control, dial intensity to plant age, cultivar, or season. 

Built to last: 3-Year warranty. Passive cooling, sealed housing (IP55), and a rated life of 30,000+ hours.

Best-fit spaces

Perfect as a primary light in ~1.2 × 1.2 m tents/rooms. For veg, you can stretch the footprint; for flower, hang lower and dim/raise as needed to hit your target PPFD.

Technical Specifications