This is a beautiful screw terminal expansion version, which is expanded for the pins of the .It is convenient for everyone to connect when doing electronic experiments.There is the pin out information of the GPIO pin on the top of the terminal and on the side.The status information of the pin is displayed. When the GPIO pin is operated and effective in the terminal, the LED on the right side of the terminal will display the status of the GPIO pin, and some are the color of the LED lights.Colour:blackMaterial:PCBSize:66 x 57MMPackage Contents:1 x Terminal expansion board4 x M2.5 copper column5 x M2.5 screw5 x M2.5 nut1 x screwdriver1 x GPIO lead tapeOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.