Code for a rca rts7110b soundbar - RCA Televison & Video

Visit the following links for information. You can use the codes on hit and trial basis.
Sanyo Soundbar Remote Control Codes (directutor.com)

Sanyo Soundbar Remote Control Codes - Codes For Universal Remotes

Sanyo Soundbar Universal Remote Codes & Programming [2023] (remotecodesportal.com)

https://www.manualslib.com/manual/920438/Rca-Rts7110b-2.html

Try using the manufactures web site help section.

The earphones and the sound bar have the same functionality: they are RECEIVERS of sound from an audio source, i.e you cannot connect one to the other (and anyway, what would be the point ?). You connect the soundbar to/with an A/V system, a TV, etc. You connect your earphones to/with a computer, laptop, phone, tablet, etc.

This sound bar is not manufactured by RCA. Go here to get information about this sound bar. Information and Support for the RCA RTS736W Wi Fi Streaming Sound Bar

2879,2880. Try these codes. If you wish to get more; check the site linked here. It has set-up code list & set-up procedure to many popular brand remote controls. See it in "Mosaic" view. It will make surf easier.
http://electrohelponline.blogspot.com/

019,011,014. If you wish to get more codes and other details,
http://electro-medical.blogspot.com/
http://electrohelponline.blogspot.com/