Build a physical mute button (for your microphone and camera) for video chat applications like Zoom, Google Meet, Microsoft Teams and WebEx using an Adafruit Trinket M0.
Roku Remote Online - Web Browser based Roku TV Remote Control with Power On/Off, Mute, Voume Up/Down Buttons
A general purpose alarm device (with software) as a module for medical devices (and others)
Make the mute button on Jabra USB headsets (Evolve2, Evolve, Speak) mute your Mac microphone system-wide. Native macOS menu bar app with mute overlay, LED sync, and Apple Music control.
Linux userspace driver for the Microsoft Modern USB-C Speaker (045e:083e) — makes its five hardware buttons work, with optional voice-assistant volume and mute sync
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