It is the best option for energy saving through the dimming application, at the lowest possible cost of acquisition. The autonomous control of each luminaire , is possible both for the luminaires with discharge lamps and luminaires that are equipped with LEDs. In the first case (discharge lamps), the possibilities for intervention by the user (percentage of dimming, operating hours of the lamp with reduced consumption, etc.) are relatively small and is expressed through the choice of two predefined current levels (original & reduced) and achieved by the use of a "two-stage" power level (bi-power ballast)
In the second case (fixtures equipped with LEDs) the user has more options to act, by means of a special software which allows him to form a "duty cycle" and therefore to built in up to five "steps" for each luminaire. Thus, he is able to define up to five different lighting levels in corresponding periods of the night. Each luminaire can be operated independently, since each may have its own "duty cycle" , or alternatively, it is possible to create groups of luminaires with the same "duty cycle".