SPECIAL DIMMER DESIGN: The upgraded F1000 series grow lights feature a dimmer switch and light switch for each light to adjust the light intensity ly. The dimmable lighting design and adjustable hoop hanging systems are especially beneficial for small-sized indoor growing and individual planting. Higher Photon Efficacy: F1000 adopts the latest high quality LED technology- SAMSUNG LM301B diodes, delivers high efficacy rating of PPF per Joule (2.7 μmol/J @ 110V AC), draws true 100 watts from the wall, achieves better or comparable results than 200 watt HID with 50% less heat and power consumption. , Reliable and Value for Money: No fan, no noise. Our 1000 WATT LED Grow Light is passively cooled using a thick 3mm aluminum heat sink. We use our own manufactured drivers and high quality LEDs, we created a premium heavy duty and durable construction with the LEDs protected by a glue coating (Rating: IP65), which makes it worth every penny. Ideal Products for Every Grow Stage: Excellent full spectrum - white, blue, red and IR (3000K, 5000K, 660nm and IR 760nm). 3000K provides a more reddish light and 5000K provides a more bluish light. The 660nm red and IR light are especially beneficial during the flowering stage, where it speeds up flowering time and increases yields. Evenly across the surface and deep into the roots and base of the grow lamp, for consistent, high-quality flowering. Best Customer Service: 2-year warranty plus 30-day money back guarantee. If you have any questions, please email us through Amazon, we will get back to you with a completely satisfactory answer within 24 hours. Package includes: 1 LED grow light connected to power cable, 1 adjustable installation rope, 1 Hook, 1 User manual.