Have purchased the remote control for my DDX5025DAB. The unit is front DDX5025DAB installed in my motor home in the cab. I wanted to use the FB from the sofa and from the bed. Everything goes well but you can not turn off the power switch or at least state-bay. What should I do with such a remote ??? not useful for me. When I sit next to the device you need yes no Ferbedienung.