Carousel pick-to-light displays are a useful tool used with both vertical and horizontal carousel systems to guide operators in the picking process. The system is designed to increase picking accuracy and speed while reducing operator error and fatigue. When an order is received, the carousel rotates around to bring the correct shelf or bin to the picker. The shelf has a light that lights up when called, as well as a display screen that tells the picker how many of those items need to be picked from that location. From there, the operator picks the required items and then confirms the pick by pressing a button. After that, the carousel again rotates to the next required shelf, and the process is repeated until the order is complete.