Each system arrives at your door with three 9" light bars, connecting wires and clips, a motion sensor for power control and an AC adapter. With a clean and crisp color temperature, 10 brightness settings and an optional 3-hour automatic shutoff, this cabinet lighting kit has the power to transform any room in your home. Engineered for superior performance, our revolutionary line of pure optics LED under cabinet lighting is powerful, sleek, and a snap to install. with its slim shape, the LED lighting simulates a bright, natural daylight with an expanded light zone, while the unit remains hidden for clean, contemporary style. Great for areas large or small, easily link up to five light bars (three included) with each bar illuminating spaces up to 36 inches wide.