50pcs 5V LED Traffic Light Display Module Electronic Building Blocks Board Geekcreit for Arduino - p

Feature: ? Size: 56 x 21 x 11mm Fixing hole: 3mm Pitch: 15mm Color: red yellow green LED: 8mm x 3 Brightness: Normal brightness Voltage: 5V Input: Digital level Interface: common cathode, red, yellow and green separate control Platform: , microcontroller ? Package includes: ? 50 x LED Traffic Light Module ?