ITEM NAME:Dual-Axis Button Rocker for PS2 Joystick Sensor Electronic Building Blocks #gib Store Home Promotion Hot Item Add to Fav.It has (X, Y) 2-axis analog output and (Z) 1-way button digital output. expansion board, the design of the X, Y, Z axis circuit is single DU, users can use 3 pins. Special line is really plugged into the expansion board for use.