In fact, the decrease in luminous flux over time must be taken into account to ensure a predetermined level of illuminance over the lifetime of the luminaires.
Without remote control, this means unnecessary use of full power during the initial life of the luminaire. By precisely controlling the luminous flux, the amount of energy required can be controlled so that the desired illuminance level - no more and no less than required - is achieved throughout the lifetime of the luminaires. CLO - constant light output.