A:
I am doing this for a friend. He has DISH Satellite Cable TV service in the US (at my house) with a DVR. You can control the Dish DVR with an app on the iPhone or Tablet and also watch it on Tablet/Computer. Dish has an arrangement with Sling box to do this. I connect the DVR to Internet via Ethernet. The programs to be recorded on DVR is also selected by the App. Viewing on PC does not work as well. At least on the Dish DVR you can watch one channel in Germany, and the local person can watch another program. With the 500 only one viewer can watch. Either remote or local. Both watch the same program.
The 500 does not have a DVR. So you will need to connect it to a Cable company DVR. And programming the DVR via this remote is not so easy. You cant use Chromecast or Roku to watch the 500 stream. To do that you go to a sling website and login and watch. Hope this helps.