VTBAL500 interface

Dear hard-working staff at Velleman,
first off - I just love your products, very innovative and affordable stuff for the discerning hobbyist.
I am thinking about using your VTBAL500 balance as a permanent gas bottle balance in a caravan (of course, unloading it while driving). The detached display is definitely convenient for my design, still better would be reading and displaying the weight on a Raspberry screen that I want to install for other purposes.
Could you please give me some details about the interface between balance and display? Is there someplace I could connect to the balance? In return, I could send you some pics or a report once the whole thing works…
Thanks for your trouble