Pi Traffic Light for the Raspberry Pi (2 pack) Add large LEDs to the Raspberry Pi Models A+, B+, Zero, 2, 3 and 3B+ Red, Yellow and Green 10mm LEDs connected to GPIO pins 9,10 and 11 Uses only four of the Raspberry Pi GPIO pins leaving the remaining GPIO pins for your project Mounts vertically to the Raspberry Pi GPIO header Two pack of the Pi-Traffic light for the Rsapberry Pi