You can connect a projector to the TV-ARC port of Beosound Theatre.
If the projector does not support HDMI ARC (Audio Return Channel), all sources must be connected directly to Beosound Theatre in order to play sound.
The source can then be selected via the Bang & Olufsen app, Beoremote One or Beoremote Halo. Peripheral Unit Control (PUC) can also be used to control the source, if it has an infrared receiver.
What is PUC and how do I use it with Beosound Theatre?
Projectors that do not support HDMI-CEC must be switched on using the their own remote control or using a control system, such as Beoliving Intelligence.