You would need to get an official Roku RC-S01 Voice Remote Pro. That one contains a lost remote finder.
@Tivoburkee knows every thing about remotes of any kind, so he may help you in this situation.
I’m into videotapes and old electronics stuff, including extenders, converters and analog 4:3 TV sets (which are obsolete these days), and Miss Bianca is my favorite character in Disney’s The Rescuers (1977) and its sequel, The Rescuers Down Under (1990). I am not a Roku employee, only a user like you. ~ Jordan