ITEM NAME:16 key 8-pin matrix keyboard module for 4x4 I6S4 16 key 8-pin matrix keyboard module for 4x4 I6S4 4 x 4 matrix keyboard module with 16 buttons 100% Brand New, High Quality Small size Save space More comfortable to use Color:As shown in the photo Material: copper Extension of a single development application module 16 button and 8 pin PCB Board Size:Approximately 48 x 32 mm / 1.88 x 1.26 inch Package Contents:1 x 16 key keyboard module Note: Light shooting 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..4 x 4 matrix keyboard module with 16 buttons. 16 button and 8 pin. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.