Module is a 1U tile
This Module is currently available.
Simple Envelope Follower in 1U format.
Insert an audio signal and extract a corresponding CV from it.
Additionally you get a gate output. Try using it with any type of signal!
https://koma-elektronik.com/new/product/detective-1u-envelope-follower-copy/
These merchants probably sell this module. Huh?
Steady State Fate DETECT-Rx
SSF Detect-Rx