I see a reply stating rc-al2 and re-al7r are possible up grades. My system is Roku Premiere. The remote only has basic functions and I would like to upgrade the remote to have on/off button, volume control etc
I mentioned the rc-al2 remote responding to OP who said they had a roku stick, just being sure it wasn't a 3500 stick, in which there is no replacement remote with a mute key or without. If your roku has a IR remote, it probably can be paired to a wifi remote with mute key.
Mine is a 3800. Here's a list of what's compatible with the remote mentioned above:
With TV power, volume, and mute buttons
Power up your TV, adjust the volume, mute, and control your streaming with one remote. Use Roku Voice to quickly search across channels, turn captions on, and more in a touch. Find remotes for Roku® Streaming Sticks®.
Roku 3 Roku 4Roku Express+ (model 3931)Roku PremiereRoku Premiere+Roku Streaming Stick (model 3600, 3800)Roku Streaming Stick+ (model 3810)Roku Ultra LTRoku UltraRoku Smart SoundbarRoku TV