ITEM NAME:5V Mini Traffic Light Red Yellow Green 5mm LED Display Module for Arduino A#S Product Description Description: 5V Mini Traffic Light Red Yellow Green 5mm LED Display Module for Arduino DIY Traffic Light System Specification: Size: 56*21*11mm/2.2*0.82*0.43'' Color: Red Yellow Green LED:5mm *3 Brightness: ordinary brightness Voltage: 5V Input: digital signal output Interface: common cathode, single control of red and yellow green Note: Please allow slight size differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understand. Included: 1 x Traffic Light LED Display Module.Brightness: ordinary brightness. Included: 1 x Traffic Light LED Display Module. Input: digital signal output. LED:5mm 3. Color: Red Yellow Green. Due to the different display and different light, the picture may not show the actual color of the item.