Thanks for the question,
I will do my best to assist you with your inquiry. Just to verify, are you referring to a Roku Voice Remote that comes with Roku Streambar or a Roku Simple Remote?
For Roku Simple Remote, operating only requires pointing directly at the Roku streaming device, and is compatible with both Roku Streambar and Roku Ultra.
However, Roku Voice remotes require a wireless discovery process known as pairing to establish a dedicated wireless connection with your Roku streaming device.
You can learn more about how to set up or pair your Roku voice remote.
If you have any other questions or concerns, please let us know.