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It consists of cool white 5000K, warm white 3000K, red 660nm, and equipped with a dimming knob with 4-levels of light intensity ranging from 0% (off), to 25%, 50%, 75%, 100%, providing the ideal lighting for plants at every stage. Anodised aluminum board with good scratch-resistance, static-free. Lightweight structure, 30% weight less than products of same size. IP65-rated water and dust proof, ensuring safety and reliability. It's freely adjusting the light coverage area to suit different plants in different growth stages. Free of install, plug and play, suitable for multiple lighting application. 1860pcs Samsung LM281B+ Pro diodes, feature a scientific layout, together with advanced driver, excellent optical uniformity, offers long-lasting high efficiency, PPE up to 2.732umol/j. Max yield 3.0g/w. Patented thermodynamics self-circulating cooling system, reduces temperature by 30% more than similar products. No fan, no noise, no extra cooling cost, saving your energy bill. Color: Black.

Equipped with 2604-Piece Samsung LM281B+ Pro diodes feature a scientific layout, together with advanced driver, excellent optical uniformity, offers long-lasting high efficiency, PPE up to 2.896umol/j. Maximum yield 3.0g/w. Patented thermodynamics self-circulating cooling system, reduces temperature by 30% more than similar products. No fan, no noise, no extra cooling cost, saving your energy bill. It's freely adjusting the light coverage area to suit different plants in different growth stages. Free of install, plug and play, suitable for multiple lighting application. It consists of cool white 5000K, warm white 3000K, red 660nm, and equipped with a dimming knob with 4 levels of light intensity ranging from 0% (off), to 25%, 50%, 75%, 100%, providing the ideal lighting for plants at every stage. Anodised aluminum board with good scratch-resistance, static-free. Lightweight structure, 30% weight less than products of same size. IP65-rated water and dust proof, ensuring safety and reliability. Color: Gray.

Equipped with 2604-Piece Samsung LM281B+ Pro diodes feature a scientific layout, together with advanced driver, excellent optical uniformity, offers long-lasting high efficiency, PPE up to 2.896umol/j. Maximum yield 3.0g/w. Patented thermodynamics self-circulating cooling system, reduces temperature by 30% more than similar products. No fan, no noise, no extra cooling cost, saving your energy bill. It's freely adjusting the light coverage area to suit different plants in different growth stages. Free of install, plug and play, suitable for multiple lighting application. It consists of cool white 5000K, warm white 3000K, red 660nm, and equipped with a dimming knob with 4 levels of light intensity ranging from 0% (off), to 25%, 50%, 75%, 100%, providing the ideal lighting for plants at every stage. Anodised aluminum board with good scratch-resistance, static-free. Lightweight structure, 30% weight less than products of same size. IP65-rated water and dust proof, ensuring safety and reliability. Color: Green.

Experience optimal growth with our Stretchable LED Grow Lights, featuring Samsung LM301H EVO Diodes. This 400-Watt full-spectrum, dimmable lamp offers versatile 3 ft. x 5ft. coverage, perfectly suited for indoor plants and tents. Its sleek bar style design not only saves space but also ensures efficient light distribution. Easily adjustable to meet your plants' specific needs, it's the ultimate solution for nurturing lush, healthy greenery. Elevate your gardening with this advanced, high-performance grow light. Color: Black. Material: Aluminum.

Revised and fully updated, the second edition of this graduate textbook offers a comprehensive explanation of the technology and physics of LEDs such as infrared, visible-spectrum, ultraviolet, and white LEDs made from III-V semiconductors. Elementary properties such as electrical and optical characteristics are reviewed, followed by the analysis of advanced device structures. With nine additional chapters, the treatment of LEDs has been vastly expanded, including new material on device packaging, reflectors, UV LEDs, III-V nitride materials, solid-state sources for illumination applications, and junction temperature. Radiative and non-radiative recombination dynamics, methods for improving light extraction, high-efficiency and high-power device designs, white-light emitters with wavelength-converting phosphor materials, optical reflectors, and spontaneous recombination in resonant-cavity structures are discussed in detail. With exercises, solutions, and illustrative examples, this textbook will be of interest to scientists and engineers working on LEDs and graduate students in electrical engineering, applied physics, and materials science.

This LED bathroom vanity mirror will not only add a luxurious, sleek look to your bathroom, but also add convenience to your routine. Against the wall, the mirror adds an elegant look to any bathroom style. The surrounding frame has ultra-high-density LED light beads, with 128 light beads per meter. The high-quality, copper-free, and environmentally friendly silver mirror glass provides you with a clear reflection. It adopts IP44 waterproof grade, which is perfect for a bathroom. The light bead strip is 13-Watts per meter, which is safe, energy-saving, and has a long lifespan. Color: Sliver.

Experience optimized growth with our Stretchable LED Grow Lights, featuring Samsung LM301H EVO diodes for unparalleled performance. This 300-Watt full-spectrum, dimmable lamp offers versatile 3 ft. x 4 ft. coverage in a sleek bar style, perfect for indoor plants and grow tents. Illuminate your greens with precision, adjusting light intensity to suit every stage of growth. Elevate your gardening with cutting-edge technology that maximizes photosynthesis and boosts yields. Discover the future of plant cultivation today. Color: Black. Material: Aluminum.

Revised and fully updated, the second edition of this graduate textbook offers a comprehensive explanation of the technology and physics of LEDs such as infrared, visible-spectrum, ultraviolet, and white LEDs made from III-V semiconductors. Elementary properties such as electrical and optical characteristics are reviewed, followed by the analysis of advanced device structures. With nine additional chapters, the treatment of LEDs has been vastly expanded, including new material on device packaging, reflectors, UV LEDs, III-V nitride materials, solid-state sources for illumination applications, and junction temperature. Radiative and non-radiative recombination dynamics, methods for improving light extraction, high-efficiency and high-power device designs, white-light emitters with wavelength-converting phosphor materials, optical reflectors, and spontaneous recombination in resonant-cavity structures are discussed in detail. With exercises, solutions, and illustrative examples, this textbook will be of interest to scientists and engineers working on LEDs and graduate students in electrical engineering, applied physics, and materials science.

VEVOR 300W LED Grow Light, High Yield Samsung 281B Diodes Growing Lamp for Indoor Plants Seedling Veg and Bloom Greenhouse Growing, Full Spectrum Dimmable, Daisy Chain Driver for 3x3/4x4 ft Grow TentSunlight-like irradiation and a customizable lighting scheme for different growth stages of plants.Up to 30 lamps can be connected in series for group control, suitable for greenhouse planting.There are 5 gears in total, including 4-gear brightness; the EXT/OFF gear is switched to RJ control, allowing adjustment for lights independently.The thickened plate and higher distance design increase the heat dissipation area and provide better ventilation.RJ interface and bulb adopt a dustproof design, making cleaning easier and extending the lifespan.For the four stages of germination, seedling, growth, and flowering, the height and light brightness can be regulated to help the plant grow.Cold White Lamp: 6500K,Waterproof Grade: IP65,Gross Weight: 18.08 lbs / 8.2 kg,PPE: 2.2-2.3,Red Lamp: 660nm,PPF: ≥580umol/S,Number of Lamp Beads: 710,Item Dimensions(L x W x H): 15.75 x 23.62 x 4.72 in / 40 x 60 x 12 cm,Infrared Wavelength: 760nm,Warm White Lamp: 3000K,Humidity: ≤95%,PPFD: ≥1300umol/m2s (0.6*1.2),Packing Size(L x W x H): 25.59 x 17.72 x 5.51 in / 65 x 45 x 14 cm,Tandem Dimming: 5-segment Dimming,Air Pressure: 90-106 Kpa,Input Voltage: AC 120-277V,Thickness of Light Board: 0.16 in / 4 mm,LED Brand: Samsung 281B,Certification: ETL/CE,Service Life: 50000 hours,Model: 300W PGL-G1,Net Weight: 12.13 lbs / 5.5 kg,Power: 300W ± 10%,Main Material: Aluminum,Luminous Flux: ≥40000lm

Comprehensive in scope, this book covers the latest progresses of theories, technologies and applications of LEDs based on III-V semiconductor materials, such as basic material physics, key device issues (homoepitaxy and heteroepitaxy of the materials on different substrates, quantum efficiency and novel structures, and more), packaging, and system integration. The authors describe the latest developments of LEDs with spectra coverage from ultra-violet (UV) to the entire visible light wavelength. The major aspects of LEDs, such as material growth, chip structure, packaging, and reliability are covered, as well as emerging and novel applications beyond the general and conventional lightings. This book, written by leading authorities in the field, is indispensable reading for researchers and students working with semiconductors, optoelectronics, and optics.        Addresses novel LED applications such as LEDs for healthcare and wellbeing, horticulture, and animal breeding;        Editor and chapter authors are global leading experts from the scientific and industry communities, and their latest research findings and achievements are included;        Foreword by Hiroshi Amano, one of the 2014 winners of the Nobel Prize in Physics for his work on light-emitting diodes.

Comprehensive in scope, this book covers the latest progresses of theories, technologies and applications of LEDs based on III-V semiconductor materials, such as basic material physics, key device issues (homoepitaxy and heteroepitaxy of the materials on different substrates, quantum efficiency and novel structures, and more), packaging, and system integration. The authors describe the latest developments of LEDs with spectra coverage from ultra-violet (UV) to the entire visible light wavelength. The major aspects of LEDs, such as material growth, chip structure, packaging, and reliability are covered, as well as emerging and novel applications beyond the general and conventional lightings. This book, written by leading authorities in the field, is indispensable reading for researchers and students working with semiconductors, optoelectronics, and optics.        Addresses novel LED applications such as LEDs for healthcare and wellbeing, horticulture, and animal breeding;        Editor and chapter authors are global leading experts from the scientific and industry communities, and their latest research findings and achievements are included;        Foreword by Hiroshi Amano, one of the 2014 winners of the Nobel Prize in Physics for his work on light-emitting diodes.

Electric meteor rainfall string lights create a magical cascading effect indoors or out. These decorative tubes of dramatic color changing LED lights cascade from the top of the tube to the bottom. They add ambient lighting to trees, patios, decks, entryways, above a table setting and under an umbrella. Perfect decor for the holidays, parties, special occasions or everyday use.

VEVOR 400W LED Grow Light, High Yield Samsung 281B Diodes Growing Lamp for Indoor Plants Seedling Veg and Bloom Greenhouse Growing, Full Spectrum Dimmable, Daisy Chain Driver for 4x4/5x5 ft Grow TentSunlight-like irradiation and a customizable lighting scheme for different growth stages of plants.Up to 30 lamps can be connected in series for group control, suitable for greenhouse planting.There are 5 gears in total, including 4-gear brightness; the EXT/OFF gear is switched to RJ control, allowing adjustment for lights independently.The thickened plate and higher distance design increase the heat dissipation area and provide better ventilation.RJ interface and bulb adopt a dustproof design, making cleaning easier and extending the lifespan.For the four stages of germination, seedling, growth, and flowering, the height and light brightness can be regulated to help the plant grow.Cold White Lamp: 6500K,Waterproof Grade: IP65,Gross Weight: 24.25 lbs / 11 kg,PPE: 2.3-2.4,Red Lamp: 660nm,PPF: ≥800umol/S,Number of Lamp Beads: 1120,Item Dimensions(L x W x H): 23.62 x 23.62 x 4.72 in / 60 x 60 x 12 cm,Infrared Wavelength: 760nm,Warm White Lamp: 3000K,Humidity: ≤95%,PPFD: ≥1500umol/m2s (1.2*1.2),Packing Size(L x W x H): 25.59 x 25.59 x 5.51 in / 65 x 65 x 14 cm,Tandem Dimming: 5-segment Dimming,Air Pressure: 90-106 Kpa,Input Voltage: AC 120-277V,Thickness of Light Board: 0.16 in / 4 mm,LED Brand: Samsung 281B,Certification: ETL/CE,Service Life: 50000 hours,Model: 400W PGL-G1,Net Weight: 16.53 lbs / 7.5 kg,Power: 400W ± 10%,Main Material: Aluminum,Luminous Flux: ≥55000lm

Soft and easygoing for every season, this striped crewneck sweater makes a great alternative to a sweatshirt. Made from textured organic cotton yarns in a year-round weight. Falls at hip. Slightly Fitted: Softly shapes the body. 100% organic slub cotton. Machine wash, dry flat. Ribbed trim. Raglan sleeves. Imported. Fit: Slightly Fitted Women's Organic Cotton Slub Sweater, Crewneck Stripe Rose Wash/Light Heather Grey Medium, Cotton/Cotton Yarns L. L. Bean

Soft and easygoing for every season, this striped crewneck sweater makes a great alternative to a sweatshirt. Made from textured organic cotton yarns in a year-round weight. Falls at hip. Slightly Fitted: Softly shapes the body. 100% organic slub cotton. Machine wash, dry flat. Ribbed trim. Raglan sleeves. Imported. Fit: Slightly Fitted Women's Organic Cotton Slub Sweater, Crewneck Stripe Rose Wash/Light Heather Grey Small, Cotton/Cotton Yarns L. L. Bean

Soft and easygoing for every season, this striped crewneck sweater makes a great alternative to a sweatshirt. Made from textured organic cotton yarns in a year-round weight. Falls at hip. Slightly Fitted: Softly shapes the body. 100% organic slub cotton. Machine wash, dry flat. Ribbed trim. Raglan sleeves. Imported. Fit: Slightly Fitted Women's Organic Cotton Slub Sweater, Crewneck Stripe Rose Wash/Light Heather Grey Large, Cotton/Cotton Yarns L. L. Bean

Soft and easygoing for every season, this striped crewneck sweater makes a great alternative to a sweatshirt. Made from textured organic cotton yarns in a year-round weight. Falls at hip. Slightly Fitted: Softly shapes the body. 100% organic slub cotton. Machine wash, dry flat. Ribbed trim. Raglan sleeves. Imported. Fit: Slightly Fitted Women's Organic Cotton Slub Sweater, Crewneck Stripe Rose Wash/Light Heather Grey Large, Cotton/Cotton Yarns L. L. Bean

Soft and easygoing for every season, this striped crewneck sweater makes a great alternative to a sweatshirt. Made from textured organic cotton yarns in a year-round weight. Falls at hip. Slightly Fitted: Softly shapes the body. 100% organic slub cotton. Machine wash, dry flat. Ribbed trim. Raglan sleeves. Imported. Fit: Slightly Fitted Women's Organic Cotton Slub Sweater, Crewneck Stripe Rose Wash/Light Heather Grey 2X, Cotton/Cotton Yarns L. L. Bean

Soft and easygoing for every season, this striped crewneck sweater makes a great alternative to a sweatshirt. Made from textured organic cotton yarns in a year-round weight. Falls at hip. Slightly Fitted: Softly shapes the body. 100% organic slub cotton. Machine wash, dry flat. Ribbed trim. Raglan sleeves. Imported. Fit: Slightly Fitted Women's Organic Cotton Slub Sweater, Crewneck Stripe Rose Wash/Light Heather Grey Extra Large, Cotton/Cotton Yarns L. L. Bean

Soft and easygoing for every season, this striped crewneck sweater makes a great alternative to a sweatshirt. Made from textured organic cotton yarns in a year-round weight. Falls at hip. Slightly Fitted: Softly shapes the body. 100% organic slub cotton. Machine wash, dry flat. Ribbed trim. Raglan sleeves. Imported. Fit: Slightly Fitted Women's Organic Cotton Slub Sweater, Crewneck Stripe Rose Wash/Light Heather Grey 1X, Cotton/Cotton Yarns L. L. Bean