From me only three stars because I expected more for the money.

If you want to now do more with the CCU All thing you have to have, as already written here familiar with networks and programming.

There is, for example, mentioned that you can insert a memory card in the CCU. Clear everyone can. But what for me? Would love the protocol take notes on this card. How? If one has now never been heard of mount or is it a fix as novice programmers and can read hours by the individual forums.

Have Fun