It's time to cause a scene––in a good way. The KOS 51 Scene Sender is an easy- to-use control module that allows you to take advantage of the 51 different color and effect combinations available with KOS 51 light strings. With the click of a button you can flip both the bulb color and the bulb effect. The best part? You can use the Scene Sender on multiple sets of KOS 51 light strings and the strings will remember your last scene sent by the Sender when powered back on.