The sound switch can be sued to switch any mains powered or low voltage equipment via any type of switch control system (where a clean contact switch can be used).
It is activated by any sound, either picked up by its internal microphone or via an external microphone plugged into the switch .
Sensitivity can be adjusted to make it respond to sounds from a whisper to a loud shout or noise, When activated it will turn on a switch control unit in whatever mode it is in, thus activating the equipment.