Time’s running out on our PR15 UltraThin LED Recessed Light sale, so shop online now with coupon code WAVES for $10 this low-profile, high-end downlight. This offer expires at midnight tonight.
Graphical representation of the layering and light transmission of the 2-D LED. From U of Washington.
In other ultra-thin led street light supplier, scientists at the University of Washington reported last month that they have created effective LEDs that are only 3 atoms thick. This was achieved by compressing flat sheets of tungsten diselenide – the lowest profile molecular semiconductor known.
Ten thousand times smaller than the width of a human hair, this LED may serve immediate applications in nano-computers and wireless communications rather than general LED lighting for the home or workplace. But Jason Ross, co-author of the paper covering this incredible development, explains “This is a huge leap of miniaturization of technology, and because it’s a semiconductor, you can do almost everything with it that is possible with existing, three-dimensional silicon technologies.” Furthermore, this led street light supplier also appears to react with polarized light in unexpected ways that no other materials can – leading UW’s team to pursue other applications.
Our team here at LED Waves is extremely excited to hear how this story develops; perhaps one day it will lead to an even smarter, thinner PR15 UltraThin LED Recessed Light!
more info you can visit:http://www.lead-lighting.com/products/sid107-1.htm
Sunday, May 4, 2014
Global Grow Lights for Agriculture Market 2014-2020
LED grow lights are more powerful and efficient than the older generation high-pressure sodium and metal halide bulb grow lights. They lower the electricity bill and produce less heat. Less heat allows putting the light closer to plants, they do not get burned. The quality of light is better for growing with LED specialized grow lights. LED specialized grow lights offer homogenous light distribution. Light distribution at precisely the right wavelengths is made possible. LED light sources offer light distribution for good photosynthetic response. Vendors are able to stimulate plant growth. Flora series LEDs provide accelerated photosynthesis and energy savings.
A plant factory allows the growing of vegetables indoors all year round using LED lights that minimize power consumption. It is a system that artificially creates the environment necessary for plants to grow by controlling the amount of culture solution, air, and light from light-emitting diodes (LED). Because the amount of light, temperature, humidity, and carbon dioxide (CO2) concentration levels can be optimized without being affected by the weather, the growth rate of vegetables is two to four times faster than those grown in open-air fields, and yields are ten to twenty times higher.
Visible natural light has a spectrum different from grow lights. Visible light is measured by lux or energy. Plant factory grow lights are different. Grow lights provide artificial light used for plant growth. The spectrum of growth lights is tuned to the plant growing task. Plant light has photons from the blue and red (400 and 700 nm) part of the spectrum. This is called growth light with different spectrums good for different parts of the plant growth process.
According to Susan Eustis, lead author of the study, "Plant factories and plant factory appliances use grow lights to automate and control shifts in technology that makes indoor farming possible. The ability to grow food consistently, locally, without pesticides represents a major breakthrough for humanity." Grow lights permit people to grow food in warehouses and in the home, dedicating previously unused space to a purpose and in a manner that is efficient for producing food. Solar energy makes this possible.
LED grow light modules markets at $395 million in 2013 are anticipated to reach $3.6 billion by 2020. Rapid growth is anticipated to come in part from home and restaurant market segments as people, particularly affluent people, become more health conscious and try to avoid the deleterious effects of pesticides in their food.
More info you can visit:http://www.lead-lighting.com/products/sid109-1.htm
A plant factory allows the growing of vegetables indoors all year round using LED lights that minimize power consumption. It is a system that artificially creates the environment necessary for plants to grow by controlling the amount of culture solution, air, and light from light-emitting diodes (LED). Because the amount of light, temperature, humidity, and carbon dioxide (CO2) concentration levels can be optimized without being affected by the weather, the growth rate of vegetables is two to four times faster than those grown in open-air fields, and yields are ten to twenty times higher.
Visible natural light has a spectrum different from grow lights. Visible light is measured by lux or energy. Plant factory grow lights are different. Grow lights provide artificial light used for plant growth. The spectrum of growth lights is tuned to the plant growing task. Plant light has photons from the blue and red (400 and 700 nm) part of the spectrum. This is called growth light with different spectrums good for different parts of the plant growth process.
According to Susan Eustis, lead author of the study, "Plant factories and plant factory appliances use grow lights to automate and control shifts in technology that makes indoor farming possible. The ability to grow food consistently, locally, without pesticides represents a major breakthrough for humanity." Grow lights permit people to grow food in warehouses and in the home, dedicating previously unused space to a purpose and in a manner that is efficient for producing food. Solar energy makes this possible.
LED grow light modules markets at $395 million in 2013 are anticipated to reach $3.6 billion by 2020. Rapid growth is anticipated to come in part from home and restaurant market segments as people, particularly affluent people, become more health conscious and try to avoid the deleterious effects of pesticides in their food.
More info you can visit:http://www.lead-lighting.com/products/sid109-1.htm
A Sea Change for LED Lighting Manufacturers
When we first shifted LED Waves manufacturing operations stateside to debut a set of American-made LED PAR lamps back in 2012, we did so with three primary goals:
Lower costs by eliminating middlemen and consolidating operations in-house – accelerating wide-scale adoption of energy-saving LED lights.
Create jobs – especially in the green tech field, particularly for the United States (which was falling behind in this field at the time) and most importantly – for us personally – on a local level here in NYC.
Exercise closer quality control of our in-house exclusives – helping diffuse the discontent some early adopters experienced from poorly made LED products.
Chicago.Illinois.LED PAR30.light bulbs
Chicago, Illinois:
The evolution of our cree xsp series led street light PAR30 involved adding dimmability and upgrading from 7 LEDs to latest Philips single CoB.
While we figured we were oddities at the time – supplying and manufacturing LED lights in-house in the USA, despite our small company size – we didn’t realize we were on the ground floor of a global sea change in the SSL industry.
China has long dominated our field, handling the intensive process behind the manufacture of all energy efficient lighting – from the glass-blown curvature of CFL bulbs to the board population and highly nuanced assembly of LED replacements – with a seemingly endless supply of cheap labor. Government subsidies made it even harder for American businesses to resist the allure of Chinese manufacturing.
Slowly yet surely, though, China is losing its foothold and manufacturing has shifted back to the United States. Forbes has noted six commonalities among manufacturers affecting this change:
forbes chinese mfgThis does not portend the end of Chinese manufacturing – far from it. Rather, we’re seeing a leveling of the playing field – and on a higher level at that. Healthy competition between cree xsp series led street light among other American manufacturers (not to mention other global contenders) breeds higher quality, lower cost LED lights, with more jobs and better employee satisfaction. And remember, that’s what drove our decision to manufacture LED lights in the USA.
More info you can visit:http://www.lead-lighting.com/products/sid109-1.htm
Lower costs by eliminating middlemen and consolidating operations in-house – accelerating wide-scale adoption of energy-saving LED lights.
Create jobs – especially in the green tech field, particularly for the United States (which was falling behind in this field at the time) and most importantly – for us personally – on a local level here in NYC.
Exercise closer quality control of our in-house exclusives – helping diffuse the discontent some early adopters experienced from poorly made LED products.
Chicago.Illinois.LED PAR30.light bulbs
Chicago, Illinois:
The evolution of our cree xsp series led street light PAR30 involved adding dimmability and upgrading from 7 LEDs to latest Philips single CoB.
While we figured we were oddities at the time – supplying and manufacturing LED lights in-house in the USA, despite our small company size – we didn’t realize we were on the ground floor of a global sea change in the SSL industry.
China has long dominated our field, handling the intensive process behind the manufacture of all energy efficient lighting – from the glass-blown curvature of CFL bulbs to the board population and highly nuanced assembly of LED replacements – with a seemingly endless supply of cheap labor. Government subsidies made it even harder for American businesses to resist the allure of Chinese manufacturing.
Slowly yet surely, though, China is losing its foothold and manufacturing has shifted back to the United States. Forbes has noted six commonalities among manufacturers affecting this change:
forbes chinese mfgThis does not portend the end of Chinese manufacturing – far from it. Rather, we’re seeing a leveling of the playing field – and on a higher level at that. Healthy competition between cree xsp series led street light among other American manufacturers (not to mention other global contenders) breeds higher quality, lower cost LED lights, with more jobs and better employee satisfaction. And remember, that’s what drove our decision to manufacture LED lights in the USA.
More info you can visit:http://www.lead-lighting.com/products/sid109-1.htm
LED Lighting: Have You Made the Switch?
Lighting improvements have consistently been the most popular type of energy upgrade identified by Environmental Defense Fund Climate Corps fellows. One trend they've observed at Environmental Defense Fund has been the growing popularity of LED lighting. Each year, upgrades utilizing LED technology represent more and more of the lighting retrofits fellows evaluate. LED project proposals went from 16 percent of lighting upgrades fellows recommended in 2012 to nearly half of all lighting projects in 2013.
This shift reflects the growing popularity of led street light fixture Manufacturer in the broader market. As technology has improved, the price of LEDs has decreased, making retrofits using LEDs more financially viable. According to research by Groom Energy, the price of commercial and industrial LED lamps and fixtures declined by 24 percent from 2010 to 2012. Rebates and incentives are often available, defraying the upfront costs of LED retrofits and making these options even more attractive. Prices are also coming down in the consumer space, where companies like Walmart now sell LED bulbs for less than 10 dollars.
EDF fellows are now proposing LED lighting upgrades that make sense in a wide variety of applications and facility types. Lighting in parking lots, garages and other outdoor areas are a frequent target, especially in locations with a lot of space, such as the film lots at Sony Pictures Entertainment. Retail locations are also popular; at Smart and Final in 2013, Michael Sciortino performed financial analysis of a pilot LED project and the enterprise-wide roll-out of LED fixtures. Fellows have also worked to evaluate led street light fixture Manufacturer in offices at companies like Turner Broadcasting System. Even museums and galleries, where lighting quality is highly scrutinized and subject to strict standards, are evaluating the technology.
More info you can visit:http://www.lead-lighting.com/products/sid108-1.htm
This shift reflects the growing popularity of led street light fixture Manufacturer in the broader market. As technology has improved, the price of LEDs has decreased, making retrofits using LEDs more financially viable. According to research by Groom Energy, the price of commercial and industrial LED lamps and fixtures declined by 24 percent from 2010 to 2012. Rebates and incentives are often available, defraying the upfront costs of LED retrofits and making these options even more attractive. Prices are also coming down in the consumer space, where companies like Walmart now sell LED bulbs for less than 10 dollars.
EDF fellows are now proposing LED lighting upgrades that make sense in a wide variety of applications and facility types. Lighting in parking lots, garages and other outdoor areas are a frequent target, especially in locations with a lot of space, such as the film lots at Sony Pictures Entertainment. Retail locations are also popular; at Smart and Final in 2013, Michael Sciortino performed financial analysis of a pilot LED project and the enterprise-wide roll-out of LED fixtures. Fellows have also worked to evaluate led street light fixture Manufacturer in offices at companies like Turner Broadcasting System. Even museums and galleries, where lighting quality is highly scrutinized and subject to strict standards, are evaluating the technology.
More info you can visit:http://www.lead-lighting.com/products/sid108-1.htm
Hubble Lighting: Understanding LED Drive Current & Current Density
When evaluating the working stresses of a semiconductor device, such as an LED, the output current from the power supply or the current delivered to the circuit board, LED string and LED package are of little consequence without associating these values to the device ratings. With respect to power, the electrical metric that is most closely associated with LED performance and lifetime is current density. Performance metrics such as efficacy, lumen maintenance and color point stability depend largely upon the designed current level (or current density) of the LED, which may be related to the physical size of the led indoor lighting wholesale or electrical arrangement of multiple die within an LED package.
Current density can be thought of in terms of the amount of current observed over a specified surface. For example, the LED that is used in Hubbell Industrial’s HBL luminaire has an effective surface area of 2mm². While the current applied directly to the LED package is measured as 700mA, the current density is actually 350mA/mm² (700mA ÷ 2mm²). This would be equivalent to operating a 1mm LED at 350mA. Where the HBL utilizes 72 high-power large-area ceramic LEDs to produce over 16,000 lumens, competitive systems utilizing smaller-die LEDs may require a greater quantity of LEDs and optics to provide a comparable lumen package.
With respect to lumen maintenance, the two areas that most commonly provide insight into the effectiveness of a luminaire’s electrical and thermal design are the operating temperature of the LEDs and system efficacy. In the case of the above referenced HBL luminaire, the system efficacy is measured at 95 lm/W, with an LED drive current of 700mA. In addition to the power supply and optical efficiency, the high LED efficacy can also be attributed to the LEDs being operated at a full 700mA below the recommended maximum drive current of 1400mA.
Additionally, in an elevated 45°C ambient condition the operating temperature of the LEDs within the HBL is less than 75°C, which is 30°C lower than the recommended maximum case temperature (105°C) specified by the LED manufacturer. Under these conditions, the reported lumen maintenance, as defined by IES TM-21-11 is 94.62% at 60,000 hours. The calculated L70 value (70% lumen maintenance) as defined by the same standard is 501,000 hours.
In summary, as led indoor lighting wholesale continue to be made available in more diverse packages it is important to not only consider the drive current applied to the LED, but also the current density. While many low-power LEDs may operate at a low current on account of their die size, larger LEDs may be driven at several amps for similar reasons. Therefore, obtaining greater insight into the operational limitations of the LEDs in question, along with the measured system performance, will lead to a greater understanding and clarity when evaluating LED luminaires.
more info you can visit:http://www.lighting-ledlight.com/index.php/tag/led-indoor-lighting-wholesale/
Current density can be thought of in terms of the amount of current observed over a specified surface. For example, the LED that is used in Hubbell Industrial’s HBL luminaire has an effective surface area of 2mm². While the current applied directly to the LED package is measured as 700mA, the current density is actually 350mA/mm² (700mA ÷ 2mm²). This would be equivalent to operating a 1mm LED at 350mA. Where the HBL utilizes 72 high-power large-area ceramic LEDs to produce over 16,000 lumens, competitive systems utilizing smaller-die LEDs may require a greater quantity of LEDs and optics to provide a comparable lumen package.
With respect to lumen maintenance, the two areas that most commonly provide insight into the effectiveness of a luminaire’s electrical and thermal design are the operating temperature of the LEDs and system efficacy. In the case of the above referenced HBL luminaire, the system efficacy is measured at 95 lm/W, with an LED drive current of 700mA. In addition to the power supply and optical efficiency, the high LED efficacy can also be attributed to the LEDs being operated at a full 700mA below the recommended maximum drive current of 1400mA.
Additionally, in an elevated 45°C ambient condition the operating temperature of the LEDs within the HBL is less than 75°C, which is 30°C lower than the recommended maximum case temperature (105°C) specified by the LED manufacturer. Under these conditions, the reported lumen maintenance, as defined by IES TM-21-11 is 94.62% at 60,000 hours. The calculated L70 value (70% lumen maintenance) as defined by the same standard is 501,000 hours.
In summary, as led indoor lighting wholesale continue to be made available in more diverse packages it is important to not only consider the drive current applied to the LED, but also the current density. While many low-power LEDs may operate at a low current on account of their die size, larger LEDs may be driven at several amps for similar reasons. Therefore, obtaining greater insight into the operational limitations of the LEDs in question, along with the measured system performance, will lead to a greater understanding and clarity when evaluating LED luminaires.
more info you can visit:http://www.lighting-ledlight.com/index.php/tag/led-indoor-lighting-wholesale/
NRL Roadmap to Efficient Green-Blue-Ultraviolet LEDs
Scientists at the U.S. Naval Research Laboratory (NRL) have suggested a method that could significantly increase the efficiency of green-blue-ultraviolet light-emitting diodes based on GaInN/GaN, AlGaN/GaN, and AlInN/GaN quantum wells. Their approach could enable advances in solid state lighting and the creation of low threshold lasers and high power light LEDs. Their research is published in the January 25 and November 26, 2013 issues of Applied Physics.
Epitaxial perfection in the growth of quantum wells has been the key to achieving light emitting and laser diodes of superior power, efficiency, and performance. Ternary group-III nitrides led outdoor lighting wholesale based on GaInN/GaN, AlGaN/GaN, and AlInN/GaN quantum wells now find widespread application in energy-efficient as well as decorative solid-state lighting. But their use in high-power lighting applications is currently hindered by a significant loss in efficiency even at modest electrical currents. Indeed, the quantum efficiency of the LEDs peaks at relatively low currents—a few tens of amperes per square centimeter—and then steadily drops, by almost half, as the current increases. This "droop" in the efficiency is observed in the visible, blue, as well as ultraviolet spectral
This is a schematic description of processes responsible for light emitting diode (LED) operation. The thick black lines show the energy band diagram of the conventional (a) and proposed (b) LEDs based on GaN/AlN QWs. In the conventional GaN/AlN QW LEDs the polarization field in the GaN layer enhances strongly the rate of the nonradiative Auger processes leading to reduction of the photoluminescence quantum yield and, consequently, to the "droop" effect with increase of the electrical current. In the proposed LEDs (b) the electric �?eld acting on holes in the QW is compensated by a gradual composition variation of the variable-gap GaAlN alloy resulting in a flat valence band potential. The Auger processes in these QWs are completely suppressed and no droop effect is expected to be seen in such LEDs. (Image Courtesy of U.S. Naval Research Laboratory)
Scientists at NRL's Center for Computational Materials Science, in collaboration with researchers at the Technion, Israel, and Ioffe Physical-Technical Institute, Russia, have created computational models showing that the observed droop effect arises from non-radiative Auger recombination of the injected carriers. The rate of the Auger recombination is proportional to the cube of the carrier concentration. As a result, the noradiative Auger decay rate grows rapidly with current density, quenching the generation of
To suppress these non-radiative Auger processes one needs to create quantum wells with a soft confinement potential. Dr. Alexander Efros, a senior researcher in NRL's Materials Science and led outdoor lighting wholesale, previously showed theoretically that a softened electrostatic potential prevents carriers from acquiring the momentum necessary for nonradiative Auger processes, and thus suppresses the Auger decay rate. This concept was patented by NRL in March 2013. The latest calculations by the NRL-Technion-Ioffe research team demonstrate that softening the confinement potential—by varying the alloy composition along the growth direction—also completely suppresses the piezoelectric field that normally enhances nonradiative Auger processes in GaN/AlN QWs. The calculations show that the droop effect in such quantum wells can be significantly or even completely
In addition to Efros at NRL, the members of the research team include Roman Vaxenburg and Efrat Lifshitz from the Israel Institute of Technology, Haifa, Israel, and Anna Rodina from the Ioffe Physical-Technical Institute, St. Petersburg, Russia.
More info you can visit:http://www.lighting-ledlight.com/index.php/tag/led-outdoor-lighting-wholesale/
Epitaxial perfection in the growth of quantum wells has been the key to achieving light emitting and laser diodes of superior power, efficiency, and performance. Ternary group-III nitrides led outdoor lighting wholesale based on GaInN/GaN, AlGaN/GaN, and AlInN/GaN quantum wells now find widespread application in energy-efficient as well as decorative solid-state lighting. But their use in high-power lighting applications is currently hindered by a significant loss in efficiency even at modest electrical currents. Indeed, the quantum efficiency of the LEDs peaks at relatively low currents—a few tens of amperes per square centimeter—and then steadily drops, by almost half, as the current increases. This "droop" in the efficiency is observed in the visible, blue, as well as ultraviolet spectral
This is a schematic description of processes responsible for light emitting diode (LED) operation. The thick black lines show the energy band diagram of the conventional (a) and proposed (b) LEDs based on GaN/AlN QWs. In the conventional GaN/AlN QW LEDs the polarization field in the GaN layer enhances strongly the rate of the nonradiative Auger processes leading to reduction of the photoluminescence quantum yield and, consequently, to the "droop" effect with increase of the electrical current. In the proposed LEDs (b) the electric �?eld acting on holes in the QW is compensated by a gradual composition variation of the variable-gap GaAlN alloy resulting in a flat valence band potential. The Auger processes in these QWs are completely suppressed and no droop effect is expected to be seen in such LEDs. (Image Courtesy of U.S. Naval Research Laboratory)
Scientists at NRL's Center for Computational Materials Science, in collaboration with researchers at the Technion, Israel, and Ioffe Physical-Technical Institute, Russia, have created computational models showing that the observed droop effect arises from non-radiative Auger recombination of the injected carriers. The rate of the Auger recombination is proportional to the cube of the carrier concentration. As a result, the noradiative Auger decay rate grows rapidly with current density, quenching the generation of
To suppress these non-radiative Auger processes one needs to create quantum wells with a soft confinement potential. Dr. Alexander Efros, a senior researcher in NRL's Materials Science and led outdoor lighting wholesale, previously showed theoretically that a softened electrostatic potential prevents carriers from acquiring the momentum necessary for nonradiative Auger processes, and thus suppresses the Auger decay rate. This concept was patented by NRL in March 2013. The latest calculations by the NRL-Technion-Ioffe research team demonstrate that softening the confinement potential—by varying the alloy composition along the growth direction—also completely suppresses the piezoelectric field that normally enhances nonradiative Auger processes in GaN/AlN QWs. The calculations show that the droop effect in such quantum wells can be significantly or even completely
In addition to Efros at NRL, the members of the research team include Roman Vaxenburg and Efrat Lifshitz from the Israel Institute of Technology, Haifa, Israel, and Anna Rodina from the Ioffe Physical-Technical Institute, St. Petersburg, Russia.
More info you can visit:http://www.lighting-ledlight.com/index.php/tag/led-outdoor-lighting-wholesale/
Swiss Researchers Develop Molybdenite LED that Doubles as Solar Cell
Researchers at the Swiss Federal Institute of Technology in Lausanne (EPFL), Switzerland, have discovered the electronic potential of molybdenite (MoS2) by creating diodes that can both emit light and absorb to create electricity.
Molybdenite has a few surprises still up its sleeve. After having used it to build an electronic chip, a flash memory device and a photographic sensor, EPFL professor Andras Kis and his team in the Laboratory of Nanoscale Electronics and Structures (LANES) is continuing his study of this promising semi-conductor. In research recently published in the journal ACS Nano, they have demonstrated the possibility of creating light-emitting diodes and solar cells.
The new molybdenite device acts as both an led high bay light price. (photo courtesy of EPFL)
The scientists built several prototypes of diodes – electronic components in which voltage flows in only one direction – made up of a layer of molybdenite superposed on a layer of silicon. At the interface, each electron emitted by the MoS2 combines with a “hole” – a space left vacant by an electron – in the silicon. The two elements lose their respective energies, which then transforms into photons. “This light production is caused by the specific properties of molybdenite,” explains Kis. “Other semi-conductors would tend to transform this energy into heat.”
Working in tandem
Even better, by inversing the device, electricity can be produced from light. The principle is the same: when a photon reaches the molybdenite, it ejects an electron, thus creating a “hole” and generating voltage. “The diode works like a solar cell,” says Kis. “Our tests showed an efficiency of more than 4%. Molybdenite and silicon are truly working in tandem here. The MoS2 is more efficient in the visible wavelengths of the spectrum, and silicon works more in the infrared range, thus the two led high bay light price together cover the largest possible spectral range.”
The scientists want to study the possibility of building electroluminescent diodes and bulbs. This discovery could, above all, reduce the dissipation of energy in electronic devices such as microprocessors, by replacing copper wires used for transmitting data with light-emitters.
More info you can visit:http://www.lead-lighting.com/products/sid22-1.htm
Molybdenite has a few surprises still up its sleeve. After having used it to build an electronic chip, a flash memory device and a photographic sensor, EPFL professor Andras Kis and his team in the Laboratory of Nanoscale Electronics and Structures (LANES) is continuing his study of this promising semi-conductor. In research recently published in the journal ACS Nano, they have demonstrated the possibility of creating light-emitting diodes and solar cells.
The new molybdenite device acts as both an led high bay light price. (photo courtesy of EPFL)
The scientists built several prototypes of diodes – electronic components in which voltage flows in only one direction – made up of a layer of molybdenite superposed on a layer of silicon. At the interface, each electron emitted by the MoS2 combines with a “hole” – a space left vacant by an electron – in the silicon. The two elements lose their respective energies, which then transforms into photons. “This light production is caused by the specific properties of molybdenite,” explains Kis. “Other semi-conductors would tend to transform this energy into heat.”
Working in tandem
Even better, by inversing the device, electricity can be produced from light. The principle is the same: when a photon reaches the molybdenite, it ejects an electron, thus creating a “hole” and generating voltage. “The diode works like a solar cell,” says Kis. “Our tests showed an efficiency of more than 4%. Molybdenite and silicon are truly working in tandem here. The MoS2 is more efficient in the visible wavelengths of the spectrum, and silicon works more in the infrared range, thus the two led high bay light price together cover the largest possible spectral range.”
The scientists want to study the possibility of building electroluminescent diodes and bulbs. This discovery could, above all, reduce the dissipation of energy in electronic devices such as microprocessors, by replacing copper wires used for transmitting data with light-emitters.
More info you can visit:http://www.lead-lighting.com/products/sid22-1.htm
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