DLC Releases Networked Lighting Controls Spec V5.2 Draft 1

Design Lights Consortium (DLC) has released the Networked Lighting Controls (NLC) Requirements V5.2 Draft 1. DLC laid out four goals for Version 5.2:

1. Highlighting emerging capabilities in networked lighting controls. Present new system capabilities, particularly integrations with thermostats to save energy and improve building performance.
2. Strengthening the role of NLC in energy efficiency programs by improving confidence in savings through standardization of configuration reporting (ANSI/NEMA C137.9). Creating a clear pathway for first generation LED projects to achieve deeper savings through NLC upgrades.
3. Simplifying and improving the QPL experience by streamlining capability descriptions and enhancing usability so stakeholders can more easily understand, compare, and select qualified systems.
4. Improving visibility across connected product categories by creating stronger linkages between NLC systems and SSL products to support clearer specification pathways and coordinate system design.

This Version 5.2 Draft 1 introduces thermostats into the specification, expanding the definition of networked lighting controls to reflect more comprehensive building system integration. Updates to the Qualified Products List (QPL) intend to improve accessibility and transparency, making it easier for stakeholders to identify, evaluate, and deploy compliant solutions. In addition, enhanced compatibility with the SSL V6.0 specification reinforces consistency across DLC programs, supporting more cohesive program design and implementation.

Notable proposed changes include:

• Recognizing NLC systems that support thermostat integration, and systems that support the ANSI/NEMA C137.9 configuration reporting standard.
• LLLC systems can now be associated with an LLLC luminaire/kit listed under SSL V6.0 on the DLC SSL QPL.
• The document format was updated to consolidate capability descriptions.
• The term “Primary Use Designation” was changed to “System Scope” to align with the NLC QPL.
• A reference to ANSI NEMA C137.5 was added to the Energy Monitoring recommendations.
• Added language to support the qualification of horticultural control systems.

The complete NLC V5.2 Draft 1 Technical Requirements can be reviewed and downloaded here.

David Shiller

David Shiller is the Publisher of LightNOW, and Senior Business Development Consultant at Capacity Consulting, a North American consulting firm providing business development services to advanced lighting manufacturers. The ALA awarded David the Pillar of the Industry Award. David has been co-chair of the ALA’s Engineering Committee since 2010. David established MaxLite’s OEM component sales into a multi-million dollar division. He invented GU24 lamps while leading ENERGY STAR lighting programs for the US EPA. David has been published in leading lighting publications, including LD+A, enLIGHTenment Magazine, LEDs Magazine, and more.

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