The LED low voltage 30 ft. linkable dusk to dawn landscape light kit contain three landscape lights in the package. Most importantly is the D2D sensor inside of the package, the D2D sensor offer the light to only light up when the area is not illuminated and therefore require the help of landscape light. Moreover, not just by detecting the area, the user can set the time of how long the light they want it to last once it’s lighted up.