DALI is the perfect choice when using CCFL or LED technologies in exit or emergency products.
CCFL and LED products don't fail, instead the light output of the device decreases. Only by knowing when the products reached 50% brightness will you know when to replace the lamp.
DALI emergency devices have inbuilt functionality to count the number of hours the lamps have run for. By knowing this, a control system can initiate a lamp change when the lamp life has been reached.
Without this technology it would be very hard and inaccurate to determine when to replace the CCFL or LED lamp source.
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