A:AnswerIt does adjust the volume on my sound bar, not directly but due to the PS5 communicating with the TV and the TV communicating with the sound bar.
A:AnswerIt will control navigation on the PS5. I don't think it has universal setting to control power and volume for a projector. I know it does most common brand TVs though.
A:AnswerThis is a PS5 Media Remote. I suggest you purchase a remote that is meant for your TV (I.e a universal remote). You may even try contacting your TV manufacturer on where to purchase a replacement. Hope this helps. Thanks!