The product integrates LCD1602 LCD monitors, RGB LED, and five key buttons (Up / Down / Left / Right / OK to select). Due to limited resources PI IO on the inside of the product also incorporates a grain of IIC interface expansion chips, and PI links only use IIC signal, python more simple, direct calls to library functions (see tutorial ). LCD1602 provides screen output: You can display two lines of 16 letters, suitable for displaying some simple text message. (For example: The following senior project displays the IP address of the foreign players, English menus and other information). Five key button with LCD1602, provides input interface, which can reach the menu function. RGB LED with different input level, you can display seven kinds of colors! This product can be inserted directly on the PI GPIO interface, users do not need the late welding, plug and play. Colour:black Material: ABS Size:10 x 6 x 3cm Package Contents: 1 x Module Only 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.