The T4 controller features timed chase from 1 - 10 minutes and Instant Sound-to-light chase. This is a 4 channel chase controller with one 3- prong plug per channel (total of 4 plugs). 16 built-in chasing patterns. Timed, Audio or Chase modes switch. In Audio mode chase patterns are executed by the sound of music. In Chase mode patterns are controlled by the speed knob Speed knob: Built-in microphone, Power switch, L.E.D. channel indicators. Specially designed hanging bracket makes the T4 easy t