The Velleman WSL131 is an electronic traffic light with 12 diodes—six red, four green, and two gold—and offers a range of visual effects. The WSL131 traffic light is typically used as a visual indicator in industrial settings, such as construction sites, factory floor safety alerts, and road construction zones. It features a user-friendly and simple design with a tall eight-inch bright housing and adjustable mounting bracket. The WSL131 is also corrosion resistant and impact resistant, and is equipped with a lighting controller to modify the visual effects of the signal. With the WSL131, users can easily set up customisable lighting sequences for signals, such as a changing light pattern or full static display.