Roku Tvs and Roku streaming devices user different sets of infrared control codes so their remotes are not interchangeable.
If you have an Android or iOS phone or tablet, with a WiFi connection to your home network you can use the official Roku remote app as a remote control. You can switch it back and forth. to control any Roku connected to your home 'net.
Replacement Roku remotes are readily available from many retailers (Amazon, Walmart, Target, Best Buy, etc.) - just be sure you get one for Roku DEVICES, not Roku TVS.
Also, many inexpensive universal remotes have code sets to control Rokus.
Note that if yours is a Streaming Stick model (has a male HDMI plug that plugs directly into a TV instead of a female HDMI jack that requires an HDMI cord to vonnect to the TV) the ONLY replacement remotes that will work with it are the Roku Voice remotes.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
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Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X
