RED, YELLOW, GREEN. Stop, Caution, Go. These are universal colour codes, and this Arduino module has many uses. From creating a miniature set of traffic lights for understanding how they work, through to building a model roadway or even setting up a basic status display for your next project.
 - 10mm Red, Yellow, Green LEDs
 - Inbuilt dropping resistors
 - Right angle plugs for standing up in breadboard
 - Common ground connection