This is a mini terminal expansion board that is convenient for users to use for GPIO. It is very suitable for .All 40pins of are transferred out by screw terminals, which is convenient for cable access. Does not occupy other space, very convenient when doing DIY circuits.Easy to assemble. Observe GPIO status.Legible miniscule printing of the labels of each of the GPIO pin's function.Material:PCB+Plastic+Metalcolour:Black+bluePackage Contents:1 x Mini Terminal Breakout Board For 1 x Acrylic Pannel1 x Screw Driver1 set x ScrewsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.