What you have in your shower is a cheaper anti-scald valve that just prevents super huge spikes in water temperature when the input pressure changes (i.e. your wife flushes the toilet).
Like PaulHoule says, you need monitoring of input and output temps to do that. And that's technically possible, but it's complex and expensive.
https://www.kohler.com/en/products/showers/shop-shower-trims...
What you have in your shower is a cheaper anti-scald valve that just prevents super huge spikes in water temperature when the input pressure changes (i.e. your wife flushes the toilet).
Like PaulHoule says, you need monitoring of input and output temps to do that. And that's technically possible, but it's complex and expensive.