DALI-2 (IEC 62386 Edition 2, 2014+) is the major evolution of DALI v1, adding native support for input devices (sensors, push-buttons) directly on the DALI bus itself, together with a product certification programme administered by the DALI Alliance (DiiA).
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DALI-2 differs from DALI v1 in several ways: input devices (presence sensor, lux meter, push-button) now sit on the bus, whereas v1 supported only control gear; application controllers are standardised (Types 75-79); multi-master operation is allowed; device discovery is automatic; memory banks (manufacturer info) are standardised; and product certification is performed by DiiA-accredited test laboratories. The practical consequence is that fully autonomous DALI-2 installations can be commissioned without a central KNX or BACnet controller, with auto-configuration handled on the bus itself.
When sourcing components, check for the DiiA certification mark and the registered product entry on dali-alliance.org — the 'DALI-2' logo without registration is not a guarantee of interoperability.
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