Key Features:

• Available in wattages of 45W, 65W, and 90W
• Available in a CCT of 4000K or 5000K
• Standard 120-277V voltage
• High efficacy of 138 lm/W
• Hassle-free 5-year warranty with 50,000 hour lifespan

Series GKODDG5 is a commercial-grade Dusk To Dawn that may also be used for residential applications. It features a design upgrade with improved electrical components over earlier models. Each fixture comes with a pre-installed, high quality Twist-Lock Photocell that automatically turns the fixture on at 10-20 Lux and off at 60-80 Lux – no complicated programming or setup required. Additionally, an optional Mounting Arm is available for increased reach. This fixture is UL Wet Location Listed for safe operation in environments where it may be exposed to moisture, and DLC Standard qualified for compatibility with energy rebate programs.

Would you like to see this product in person before making a purchase? We are confident that once you have the opportunity to test our products, you will want to use them, so we offer a risk-free 30-day trial on any of our fixtures. Contact our sales team at 516-670-6888 or will@jeelighting.com for more details.

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The lens of a LED fixture serves a twofold purpose: it focuses the light emitted by the LED chips and it shapes the light distribution. Therefore, choosing a LED light with the right lens is essential for projects with precise lighting requirements. In evaluating the lens, both materials and design should be considered to ensure the fixture in question is truly suitable for a specific LED lighting project.

If you regularly work on commercial lighting projects, you have probably encountered fixtures with lenses that have yellowed over time. A yellowed lens doesn’t just affect the appearance of the LED fixture – it also changes the fixture’s performance and the color of the light it produces. To prevent this problem, most GKOLED LED products use lenses made from optical-grade polycarbonate with UV stabilizers that resist yellowing. A top-tier material, polycarbonate is known for its high heat and impact resistance, and by using it we ensure continued high performance in our lenses, even in harsh weather conditions.

Equally important is the design of the lens, as it determines the light distribution of the LED fixture. Precise light distribution is essential for many commercial lighting projects, such as roadway lighting and parking lot lighting. However, many cheaper LED fixtures cut costs by reusing the same lens design across different products, despite different project requirements for these types of products. By contrast, GKOLED LED fixtures feature lenses precisely designed for specific light distribution. For select fixtures (Roadway Lights, Tier 1 Area Lights, Tier 2 Area Lights, Tier 1 Flat Flood Lights, Tier 2 Flat Flood Lights), we even offer a selection of different lenses with different light distributions, available upon request. This is one of many customizable options that GKOLED offers in order to meet the needs of your clients.

We are confident in the quality of our products and believe that once you have the opportunity to try out GKOLED fixtures, you will want to use them in your projects. This is why we are offering a risk-free 30-day trial of any of our lights, with shipping covered by us. For more information, please contact our sales team at 516-670-6888 or at will@jeelighting.com.

The post LED Lenses – Choosing Quality LED Lighting, Part 3 appeared first on GKOLED.

The LED driver provides a LED fixture with the correct power supply needed to ensure optimal performance. Many premature LED failures are the result of a failed driver, so choosing a LED fixture with a high-quality driver goes a long way to ensure reliable operation.

A good indication that a LED fixture contains a quality LED driver is a DLC Standard or DLC Premium designation from the Design Lights Consortium, one of the major organizations that help set the standards for high quality in LED lighting. As part of the DLC certification process, the LED driver in a product undergoes rigorous testing to ensure it meets strict performance requirements. Almost all GKOLED products are DLC Standard or DLC Premium listed, which means that our LED drivers meet or exceed the high standards for quality designated by the Design Lights Consortium.

Another good way to determine the quality of a LED driver is to check its Power Factor (PF). Rated on a scale from 0 to 1, the Power Factor of a driver indicates its efficiency, with a PF of 1 providing perfect efficiency and lower numbers indicating a large amount of wasted electricity. For LED fixtures, a PF of 0.9 (or 90%) is considered excellent. If the LED driver has a low Power Factor, it can indicate that the manufacturer has tried to cut costs on a fixture by using a low quality driver.

Power Factor is an important consideration for a successful commercial LED lighting project. Most utility companies charge by the wattage used by the LED light and not by the actual amount of electricity delivered, however, the extra electricity wasted by inefficient LED drivers with a low Power Factor still has to be generated and provided by the power plant. Because of this, some utility companies will apply a penalty charge for low Power Factor energy use, which will eat into the savings the commercial customer hopes to obtain by switching to LED lighting in the first place.

Additionally, because the Power Factor of a LED driver affects the amount of current drawn by the driver, it determines the number of fixtures that can be accommodated by an electrical setup. The lower the Power Factor, the fewer the amount of fixtures that can be installed. This makes low Power Factor LED drivers problematic for bigger commercial LED lighting projects requiring a large number of LED lights.

All GKOLED LED fixtures feature a driver with a Power Factor of 90% or greater. We use high end proprietary LED drivers or source from respectable manufacturers such as Inventronics to ensure maximum efficiency and reliability in our LED products.

Would you like to test our LED fixtures before placing your order? We offer a risk-free 30-day trial on any of our LED products, and yes, shipping is on us. For more details, contact our Chicago-based sales team at 516-670-6888 or at will@jeelighting.com.

The post LED Drivers – Choosing Quality LED Lighting, Part 2 appeared first on GKOLED.

We will begin by examining LED chips and their effect on the performance of a LED light.

Responsible for converting electrical energy into light, LED chips determine both the color and the quality of the light produced by a LED fixture. Though there are many manufacturers of LED chips worldwide, not all LED chips are created equal, and there is a wide range in quality and performance across the market. The best LED chips are produced by prominent companies in the United States and Japan, as well as certain reputable manufacturers in China and South Korea.

Why is it important to choose LED fixtures that use high quality LED chips? During the manufacturing process, there are natural variations in light color, brightness, and voltage, even among LED chips from the same batch. Because of this, manufacturers sort LED chips into groups called “bins” based on their characteristics. The highest quality LED chips are placed in the tightest “bins”, ensuring that any differences between chips are so minimal as to be imperceptible. By choosing LED fixtures utilizing high quality LED chips, you ensure consistent LED performance across your LED lighting project, regardless of the project size.

In addition, high quality LED chips feature much better durability than their cheap counterparts. All LED chips experience some form of degradation in performance over time. In high quality LED chips, this decrease is so small as to be negligible, however, cheap LED chips can have degradation so extreme that the entire fixture needs to be replaced. Make sure to select fixtures with high quality LED chips to minimize the chance of additional costs being incurred down the line.

GKOLED LED lighting uses high quality LED chips from top-tier chip manufacturers Lumileds, Osram, and Cree. By sourcing LED chips from these reputable manufacturers, we ensure consistent, reliable color, performance, and durability in our products.

We are proud of the quality of our LED lighting and we want to give you the chance to test our product first-hand. This is why we offer a risk-free 30-day trial on any of our LED fixtures, no commitment required. Contact our Chicago-based sales team at 516-670-6888 or at will@jeelighting.com for more details!

The post LED Chips – Choosing Quality LED Lighting, Part 1 appeared first on GKOLED.

WHAT IS CCT?

First, just what is color temperature?

Generally, any uniform white LED lighting will be perceived as white by the human eye, which naturally adjusts to different lighting conditions. However, white LED lighting is actually available in a range of subtle color variations, which become obvious when two different LED lights are placed next to each other. LED light can range from a warm yellow reminiscent of traditional incandescent lighting, to a cool bluish white resembling natural daylight. The term “color temperature” is used to describe the color cast of the light produced by a LED fixture.

Though the color temperature of a light can be identified by a name, such as “warm white” or “daylight white”, there is no consistency between names across different manufacturers. A more efficient way to identify the exact color temperature of a LED fixture is to refer to its CCT, or Correlated Color Temperature. CCT is a system of measuring color temperature that is uniform across the lighting industry, indicated in degrees Kelvin and measured on a scale from 0 to 10,000. Note that this doesn’t mean that the light fixture will be heated to the value indicated by its CCT – the number is descriptive, rather than literal.

How is CCT derived? Imagine a perfectly black object, such as iron or a piece of carbon, that is capable of being heated to extremely high temperatures. Because black absorbs all light, the only color that will be present in the object will be a direct result of the heat. When the object is heated to 1500K, it will begin to glow red. At 3000K, it will glow yellow. At 5000K, it will glow white, and when heated beyond that, it will turn blue. When we refer to the CCT of a LED light, the indicated Kelvin value correlates to the color the black object would turn if heated to the corresponding temperature. For example, a LED light with a CCT of 3000K will have the same yellow color as the black object heated to 3000K.

APPLICATIONS OF COLOR TEMPERATURE

Though which color temperature to use for a LED lighting project can be a matter of preference, different color temperatures are also useful for different applications.

A CCT of 3000K and below produces a warm light with a high proportion of yellow, similar to the light produced by traditional incandescent lighting. This type of LED light can create a comforting, cozy atmosphere that is perfect for residential applications. Our residential LED lights, including our Series GKOLS01 LED Landscape Lights and our Series GKOHSA LED Hardscape Lights, are available in 2700K, while our Series GKOFD03 LED Mini Flood Lights are available in 3000K. These lights are perfect for creating the warm atmosphere desired by many light design applications, such as uplighting and wall washing.

A CCT of 5000K and above produces a crisp white light with a high proportion of blue, comparable to natural daylight. Believed to boost concentration and productivity, LED lighting with this CCT is often preferred for commercial and industrial settings. GKOLED specializes in commercial LED lighting, and all of our commercial LED fixtures are available in a default color temperature of 5000K.

A CCT of 4000K produces a natural white light comparable to sunlight, and is a good choice for a project that requires neutral lighting. All of our commercial LED lighting is also available in 4000K, by special request.

(Please note that indicated CCT colors in infographic are approximate.)

WHAT ABOUT CRI?

The CRI, or Color Rendering Index, of an LED fixture, is used to describe the accuracy of colors rendered by the light as compared to that of an ideal light source, such as full daylight. CRI is measured on a scale from 0 to 100, with 100 corresponding to a light source with perfect color rendering, such as natural daylight. All GKOLED lighting features CRI ranging from 70 to 80, providing excellent color rendering for improved visibility.

Still not sure which color temperature is right for your project?

Our Chicago-based sales team is here to help. Call us at 516-670-6888 and tell us about your project. We would be happy to make a recommendation and provide you with a no-obligation, volume-based quote.

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