SES 110 Hose
I think this is the hose you need. There are several internet stores that sell them. It tells you what power nozzles it will fit. They have a cord running from the power nozzle to the hose nozzle, where it plugs in.
Hope this helps.
Ristenbatt, Central Vacuum Stores are two that carry it. It is genuine. You could also buy it direct from a Miele Dealer or Miele USA.
PR-21
Bud Mattingly