Special effects can be generated when Flexilight is connected with specific controllers. For small designs which require only a few feet of Flexilight, a Mini-Controller which is a small and handy electronic device is highly recommended. By simply switching the button, the speed of flashing, chasing, or color changing can be adjusted. For more complicated effects and longer loading length, a large Controller which performs multi-function is suggested. The main functions include: static, flashing, chasing, linear chasing, alternative flashing, etc.