This Module is currently available.
3 Channel summing attenuverter / mixer
Ease is Tenderfoot Electronics' multifunctional summing attenuverter:
Attenuate or invert 3 DC or AC inputs.
Mix 3 inputs into one output.
Add an offset to an input.
Normalized to a 5V input, giving up to 3 DC voltage sources ranging from -5V to +5V.
https://tenderfootelectronics.com/collections/frontpage/products/ease-coming-soon
4 Users are observing this
These merchants probably sell this module. Huh?
Tenderfoot Electronics Ease