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Delta Swiss Technologies strives to provide quality products and services to meet and exceed customer satisfaction. 

  1. ETL vs. UL Certifications 
  2. DesignLights Consortium® (DLC)
  3. Energy Star®


ETL vs. UL Certifications

The purpose of this document is to clarify questions regarding the use and acceptance of ETL product certification versus UL certifications


Intertek™ (ETL) tests to the exact same standards as UL and their certification has the same recognition BY OSHA since they are both Nationally Recognized Testing Laboratories (NRTLS).

Frequently Asked Questions about the ETL Listed 

  • What’s the difference between UL and ETL Listed Marks?

    There is no difference. Both marks demonstrate that the product that bears it has met the minimum requirements of widely accepted product safety standards as determined through the independent testing of a Nationally Recognized Testing Laboratory ( NRTL ). The only real difference between the marks is the testing laboratory behind them.

  • What is an NRTL?

    A Nationally Recognized Testing Laboratory (NRTL) is an independent laboratory recognized by the Occupational Safety and Health Administration (OSHA) to test products to the specification of applicable product safety standards – such as those from Underwriters Laboratories (UL) and other standards-writing bodies. An NRTL’s function is to provide an independent evaluation, testing, and certification of any electrically operated or gas- and oil-fired product.

  • How long has the ETL Listed Mark been around?

    ETL has been certifying electrical products over 100 years. The original Electrical Testing Labs (ETL) was founded by Thomas Edison in 1896.

  • Do local inspectors know the ETL Listed Mark?

    Yes. The ETL Listed Mark is recognized by local inspectors and Authorities Having Jurisdiction (AHJs) throughout North America and also in some areas of South America. An NRTL recognized by OSHA, the ETL Listed Mark is an accepted alternative to UL, and such, inspectors and AHJs recognize, acknowledge, and accept the mark as proof of product compliance. 

DesignLights Consortium® DLC

Bringing Efficiency to Light 

  • The DesignLights Consortium® (DLC) is a non-profit organization dedicated to accelerating the widespread adoption of high-performing commercial lighting solutions. The DLC promotes high-quality, energy-efficient lighting products in collaboration with utilities and energy efficiency program members, manufacturers, lighting designers, and federal, state, and local entities. Through these partnerships, the DLC establishes product quality specifications, facilitates thought leadership, and provides information, education, tools and technical expertise.

Why DLC? 

  • The DLC drives energy efficiency in the commercial lighting sector.


  • The DLC helps utilities create better energy efficiency programs by identifying and verifying the highest-performing products and systems.
DLC Expertise


  • The DLC provides technical expertise and a collaborative forum for all industry stakeholders to drive product performance.
DLC Innovation


  • The DLC works tirelessly to create new programs, tools, and resources that are relevant to the needs of end users and that push the commercial lighting industry into a more energy-efficient future.
Energy Star®

 The simple choice for energy efficiency 

ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. Thousands of industrial, commercial, utility, state, and local organizations—including more than 40 percent of the Fortune 500®—rely on their partnership with the U.S. Environmental Protection Agency (EPA) to deliver cost-saving energy efficiency solutions. Together, since 1992, ENERGY STAR and its partners have helped save American families and businesses $430 billion on their energy bills*—while also achieving broad emissions reductions—all through voluntary action. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. EPA ensures that each product that earns the label is independently certified to deliver the quality, performance, and savings that consumers have come to expect. It’s that integrity that led Americans to purchase more than 300 million ENERGY STAR certified products in 2015, with a sales value of more than $100 billion.

ENERGY STAR tools and resources help businesses determine cost-effective approaches to managing energy use in their buildings and plants—enabling the private sector to save energy, increase profits, and strengthen their competitiveness. From commercial properties such as hospitals, schools, and offices, to industrial facilities such as cookie and cracker bakeries and integrated steel mills, thousands of businesses and organizations look to ENERGY STAR for guidance on strategic energy management.

The program’s popular online tool, ENERGY STAR Portfolio Manager®, is used to measure and track the energy performance of nearly 500,000 commercial buildings—representing 50 percent of all commercial floor space across the nation. For eligible buildings, the tool calculates a 1–100 ENERGY STAR score, which has become the industry standard for rating a facility’s energy performance. Top-performing buildings and plants can earn EPA’s ENERGY STAR, which, for certain property types such as commercial real estate, has been shown to command a premium of up to 16 percent for sales prices and rental rates.

* Estimated energy cost savings represent the present value of net energy cost savings, calculated by taking the difference between total energy bill savings and the incremental additional investment in energy-efficient technologies and services.

Image result for Lighting products that have earned the ENERGY STAR deliver exceptional features, while using less energy. Saving energy helps you save money on utility bills and protect the environment by reducing greenhouse gas emissions in the fight against climate change.


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