The Kessil A360WE comes with two control knobs. One knob is used to control overall intensity and the other knob the blue/white LED spectrum mix. You can tune a preferred color within the spectral range thousands of research and testing hours determined to be the optimal spectral points. In addition, you can control the A360WE with the Kessil Spectral Controller (a separate purchase).
Variable Color Temperature: Using the color spectrum knob on the top of the light you can tune the LEDs to your desired color temperature. 6000K - 9000K
Can be controlled with the Kessil Spectral Controller (Sold separately) or other controllers
LED array specifically designed for aquariums
Point light source with glitter lines that rival metal halide lights
Dimensions: 2.96" Length x 4" Diameter
10 foot power cord from light to power supply. 6 foot cord from power supply to wall plug.
Universal power supply: 100-240 VAC (Input), 48 VDC, 1.87A (Output). Could require a plug adapter for non-US sockets.