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Why Choose Xinhaohui ? Xinhaohui is a professional manufacturer of LED Grow light , We produce real full spectrum quantum led grow lamp , which with high PPF efficency original Samsung lm301b white diodes .Added 660nm red can help the bloom of your plants , We design and manufactue the high quality heatsink to support the light with appropriate temperature , The grow lamp is preassembled . , just plug and play . Trust us and we can help you grow your plant fastly and health . Specification: - Power : 240W - LEDs : 456pcs Samsung LM301B 3500K + 76pcs 660nm - Heatsink size : 632.5mm*195mm*10mm - Driver : Meanwell XLG-240-H-A Work in 85-265V - Flowering Footprint : 2 x 4ft - Veg Footprint :3 x 4ft - DB: 0dB - Max Yield:2.5g/watt - Humidity ≤90% - Lifespan: ≥50000 hours - Frequency: 50-60HZ - Work Temperature:-4°F ~115°F (-20°C ~ 46°C) - Recommended Mounting Height : 20-32inches Discreet Package: 1pc * 240W LM301B LED Board 1pc * US Power Cord 2pcs * Adjustable Rope Hanger Notice: - 1 Year Warranty for LED Board - 5 Years Warranty for Meanwell driver - Don't touch the baord when lighting, - Board test on outside the tempreture 55℃,Natural ventilation atmosphere test 43℃ - This tempreture is Much lower 20℃ than Led working should be under 70℃.