E-Z Command 'Control Centre'

[sswcharlie]

Hi
Have a E-Z Control Centre.  Happy with it and does what I need.

What does the  i/o port get used for ?

Has anyone built any devices to make use of this port.  Like a handheld knob etc that repeats the settings (speed and direction)   on the master unit  only master  or hand held use at one time.

   OR   is there a second throttle design that allows two controlled locos at once each on separate throttle.

And out of left field X!!   --   would a Fremo modular dcc hand held control work with the E-Z ?  The Fremo has a dedicated loco decoder and plugs into the network.  (works apparently on any network, Digitrax etc)  Has one knob only and a reverse/forward switch

Thanks
Charles Harris