ITEM NAME:2PCS Dual-axis Joystick Module PS2 Joystick Control Lever Sensor For Arduin Gw.Cross joystick is a bi-directional 10K resistor, with the rocker in different directions, the tap resistance with the change. Output signal: the module special two-way analog output and a digital output interface, the output value corresponding to (X, Y) biaxial offset, the type of analog; keys that the user press the Z axis, Its type is digital switch.