you are right...
it´s just a single item. But, in my mind, it show´s what could be realized in our hobby!
let´s have a look at the Commander from ScaleART. With the receiver you can see the level of the model.
In this model, my friend fiddles about, how can by tilt automatically the shield with this receiver.
https://www.youtube.com/watch?v=ccf1ixNrRjU