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DiiA - the global DALI alliance

Welcome to the DiiA

The Digital Illumination Interface Alliance (DiiA) is the global industry alliance for DALI lighting control.

We are an open, global consortium of lighting companies, and our main aim is to grow the market for lighting-control solutions based on the standardized Digital Addressable Lighting Interface (DALI) protocol.

DiiA was established in response to industry requests for an independently-verified certification program that covers the functionality specified in DALI-2, the latest version of the DALI protocol.

DALI-2 product certification by DiiA brings the promise of significantly-improved interoperability and additional functionality compared with the current DALI systems in the market.

>>  Read more about the DALI-2 certification program

Certified DALI-2 products are eligible to carry the DALI-2 logo, issued by DiiA, which signifies interoperability. Only certified products can carry the DALI-2 logo, and only DiiA members can certify their products. 

>> All DALI-2 products are listed in the Product Database

DiiA develops the Test Specifications that allow companies to test their products for compliance with the requirements of the multi-part IEC 62386 standard or the new DiiA specifications. 

>>  Read more about IEC 62386 and the DiiA specifications

DiiA was formed by seven leading lighting companies: Erco, Helvar, Insta, Lutron, Osram, Philips Lighting and Tridonic.

>>  View the current list of DiiA members

DiiA is an open, not-for-profit consortium, and new members are welcome to join us.

>>  Find out how to join DiiA


The Digital Illumination Interface Alliance is a Partner Program of IEEE-ISTO.

>> IEEE-ISTO website

ISTO is an international federation of leading industry groups and consortia dedicated to the advancement of standardized technologies for the benefit of industry.

DiiA Presentation

>> Download our presentation to get an overview of DiiA, including:

  • DiiA organization & membership
  • DALI-2 certification
  • DALI-2 specifications
  • Certified products
  • Use of DALI trademarks


A selection of frequently-asked questions, and answers, can be found here:

>> FAQs