The Control Devices CDJ420 series joystick is available in single and dual axis configurations. This joystick can be supplied with a battery rail voltage anywhere from 8-30 V dc. The device conditions the voltage and supplies the appropriate voltage levels to both ends of the joystick pot taps, as well as the centre tap. The output from the joystick is 4-20mA. The joystick can be configured to give either 4mA or 12mA as the centre current. Directional switches are also provided if a discrete signal for displacement is required.