This is a mini terminal expansion board that is convenient for users to use for GPIO. It is very suitable for .<br> 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.<br> Easy to assemble. Observe GPIO status.<br> Legible miniscule printing of the labels of each of the GPIO pin's function.<br> Material:PCB+Plastic+Metal<br> colour:Black+blue<br> Package Contents:<br> 1 x Mini Terminal Breakout Board For<br> 1 x Acrylic Pannel<br> 1 x Screw Driver<br> 1 set x Screws<br> Only the above package content, other products are not included.<br> 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.