How to order Harmony XKB Joystick Controller with analogue output.

For ordering Harmony XKB Joystick Controller with analogue output,user have to use a Zelio Analog interface like the
RMCN22BD or RMCL55BD choosing the 4-20mA  analogue output.Actually, they will work as a current generator with
the potentiometer and then the potentiometer will work between 0 and 10V signal.