- Higher Yields & Energy Efficient: Use of Samsung LM301B chip and MEAN WELL driver ensures high energy efficiency at 2.7 umol/J usage rate. Delivers powerful light output and uniform canopy penetration for maximum yields. YINTATECH QB-4000 Super Bright Grow Lights only consume 400w, which is 50% less than other lights yet it realizes higher PAR and yields.
- Dimmable & Separate Switch Design: Simple installation with a separate adjustable switch that allows you to freely adjust brightness without removing the product from the plant tent.
- Full Spectrum Light: Full spectrum LED grow light adopts 380-800nm wavelength and IR lamp bead to promote all stages of the plant, veg, and flower growth. Ideal for indoor plant germination, growth, flowering, and fruiting.
- Efficient Cooling System: Features an improved, waterproof aluminum cooling heat board that greatly extends product service life. No fans, so operation is noiseless. Sunglasses are included to protect your eyes.
- Wide Coverage: This QB-4000 400 watt quantum LED plant grow light covers a 6 x 6 ft vegetable footprint and 5 x 5 ft flowering footprint. Wide coverage is optimal for 5 x 5 ft plant tents.