DLC News
October 1, 2018

New DLC Policy: SSL Technical Requirements V4.4 Released

The DLC is pleased to release the final version of Technical Requirements Version 4.4 for Horticultural Lighting, Direct Current and Power over Ethernet (DC and PoE) Lighting, and Field-Adjustable Light Output products. These final policies will be added to the Technical Requirements as Version 4.4, with an effective date of Thursday, October 18, 2018.

These are the final DLC requirements resulting from proposals that were first released for comment in April 2018, and released for a second round of comments in August 2018.

Please note that the DLC Requirements for Field-Adjustable Light Distribution will not go into effect with Technical Requirements V4.4, and will instead move into a second round comment period. For more information and to submit comments, please visit the Field-Adjustable Light Distribution page.

SSL Technical Requirements V4.4

  • Horticultural Lighting: Testing and Reporting Requirements for LED-based Horticultural Lighting
  • DC and PoE Lighting: Testing and Reporting Requirements for Direct-Current (DC) and Power-over-Ethernet (PoE) Lamps, Luminaires, and Retrofit Kits
  • Field-Adjustable Light Output: Revisions to Testing and Reporting Requirements for Dimmable Products with Field-Adjustable Light Output (previously released as a part of Technical Requirements V4.3)

Informational Webinars

Two informational webinars will be held to review the proposed new Technical Requirements:  

Horticultural Lighting Webinar

Wednesday, October 3, 1:00pm-2:00pm ET.

DC/PoE, Field-Adjustable Light Output, and Second Draft Field Adjustable Light Distribution Webinar

Thursday, October 4, 1:00pm-2:30pm ET.

SSL V4.4: Requirements for Horticultural Lighting Products

Well-designed horticultural lighting products have the potential to save energy while optimizing plant growth and health. The DLC will qualify fixtures designed and marketed for use in horticultural lighting applications on a separate, special-purpose Horticultural Lighting Qualified Products List (QPL). These products will be provided with a distinct logo that will differentiate qualified horticultural lighting fixtures from qualified interior and exterior SSL products.

View Horticultural Lighting Requirements

SSL V4.4: Requirements for DC and PoE Products

DC and PoE systems have the potential to reduce electrical losses from AC to DC conversions, integrate directly with DC generation sources such as solar and batteries, reduce installation costs, and connect more readily to IT infrastructure for advanced lighting control. The V4.4 Requirements will enable luminaires, lamps, and retrofit kits that are powered by Direct Current or Power over Ethernet to be qualified and listed on the SSL QPL.

View Requirements for DC and PoE Products

SSL V4.4: Revised Requirements for Field-Adjustable Light Output

The DLC issued a new policy in March 2018 that allowed products with field-adjustable light output capability to be qualified and listed on the SSL QPL. In May 2018, the DLC suspended this policy in order to revise it to allow greater flexibility and clarity around the difference between field adjustable and dimmable products and the associated testing requirements. With this V4.4 release, the DLC will begin accepting applications for products with field-adjustable light output under a simplified policy that aligns testing requirements between dimmable and field-adjustable light output products.

View Revised Requirements for Field-Adjustable Light Output Products

Second Draft: Requirements for Field-Adjustable Light Distribution

The DLC has released a second draft policy that will enable luminaires, lamps, and retrofit kits with field-adjustable light distribution capabilities to be qualified and listed on the DLC SSL QPL. This new beneficial product feature provides economies of scale opportunities for the supply chain and more flexibility for customers and installers. Comments on this second draft are due by Monday, October 22, 2018.

Download Drafts and Key Technical Questions

If you have any questions about Technical Requirements V4.4, please email info@designlights.org. We appreciate your comments and feedback.