# Traffic Light Versions Displaying the version and its functions with examples. ## Version 01 In these functions, you must specify the MDP pin corresponding to the module you are using. ![](Images/1.png) *Example 1* This function takes three values, one for each color: Red, Yellow, and Green. ![](Images/2.png) *Example 2* This function takes three values—one for Red, Yellow, and Green—and also allows you to control the brightness of each.