Planet Z: https://forums.scopeusers.com/viewtopic.php?f=16&t=33029
Download: https://forums.scopeusers.com/download/file.php?id=11525
An automatic switch.
If a signal present at the input 2 automatic switch to the input 2. Input 1 is now muted.
If no signal is present at input 2 automatic switch to input 1.
The switching level is adjustable.r
Peter