DALI Tunable White Lighting refers to lighting systems controlled by the Digital Addressable Lighting Interface (DALI) protocol that allow dynamic adjustment of the color temperature of white light. With tunable white, the color temperature can be changed from warm white through neutral white to cool daylight white, typically within a range from about 2700K to 6,500K. This adjustment mimics natural daylight changes and supports human circadian rhythms and well-being.
What is Tunable White Lighting?
Tunable white lighting is a type of LED lighting technology that allows you to adjust the color temperature of white light — typically from a warm white (around 2700K) to a cool white (up to 6500K or higher) — and often control brightness at the same time.
In simpler terms, it lets you change how “warm” or “cool” the light looks, similar to how natural daylight shifts throughout the day.
What is DALI Tunable White Lighting?
DALI Tunable White Lighting refers to a smart LED lighting system that combines tunable white technology (adjustable color temperature and brightness) with DALI — the Digital Addressable Lighting Interface, a global standard for digital lighting control (IEC 62386).
This combination provides precise, flexible, and interoperable control of white light color temperature and intensity across different luminaires and manufacturers.
How Does Tunable White Lighting Work?
Tunable white lights use two (or more) sets of LEDs within the same fixture:
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Warm white LEDs (yellowish tone 2700K, like sunrise or candlelight)
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Cool white LEDs (bluish tone 6500K, like daylight)
By changing the mixing ratio of these LED channels, the system can create any white light color temperature within its range.
For example:
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More warm LEDs → 2700K (soft and cozy)
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Balanced mix → 4000K (neutral white)
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More cool LEDs → 6500K (bright and alert)
DALI Tunable White Lighting Functions
• The power supply has 2 output channels used to control the intensity and temperature of white color, also known as “Tunable White”.
• Respond to DALI type 8 (DT8) commands, which in practice means that they only have 1 common address for both output channels.
• The tunable white level of intensity and color temperature can be set either with a DALI command or by PUSH switch control.
• The power supply will operate correctly once tunable white LED module parameters are programmed to the driver. Use the DALI tools for the parameter setting.
• The higher the brightness, the wider the color temperature range can be obtained.
Features of DALI Tunable White Lighting
• Dimming/Tunable white/Color control
• Scene and group control
• Daylight harvesting control
• Motion sensing control
• Support RS485 protocol curtain control
• Circadian rhythm and human centric lighting (HCL) control
• Complex logic and equipment relevance control
• Operation logic switch + schedule control
• Support connecting with third-party systems, such as BACnet, Modbus systems, KNX, etc
DALI Tunable White Lighting for Room Solution
For room-level lighting control, the number of lamps generally does not exceed 64, and a DALI circuit can support up to 64 DALI lamps, so one DALI circuit can be workable. Using a lighting control system that supports DALI-2, you can connect standard DALI-2 control devices and driver devices, such as control panels, sensors, etc., through the flexible settings of these panels, sensors, drivers and software, you can achieve intelligent room control requirements easily.
DALI Tunable White Lighting for Floor and Building Solutions
The cascade and linkage of DALI-2 gateways can provide solutions for floor and whole building lighting and curtain control. Each gateway contains an Ethernet network port, through which each DALI-2 gateway can be cascaded and device linkage can be performed through the software. For example, the control panel of gateway A can control the lights under gateway B, the lights under gateway A and the lights under gateway B can be set in a group and controlled, etc. At the same time, the entire control system can run independently or connect to the encrypted cloud for settings, control, upgrades, etc.
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