I want a Keychron-quality mechanical switch that triggers HomeKit actions.

Something along these lines with a little configuring perhaps?

Full Stack Dev | Head of Developer Relations at /pinata | Technical Writer | Tinkering with everything | stevedylan.dev/links

Something along these lines with a little configuring perhaps? 

https://drop.com/search/macropad/drops

DIY option: https://github.com/maximkulkin/homebridge-macropad

lutron pico remotes hooked up to homeassistant might do the job. that way the hardware matches existing home hardware.... depends on the use case though!

you deserve better than keychron quality switches, let's aim for BSUN quality!!

As far as I know there not off the shelf solution. All requires combination and DIY

That sounds so nerdy yet simultaneously intriguing

This is why you’re supposed to use SmartThings

sry, link to German Amazon - skip homekit, go  for matter. It's supported natively by apple and you can retrofit the relais to any existing switch

sry, link to German Amazon - skip homekit, go  for matter. It's supported natively by apple and you can retrofit the relais to any existing switch 

https://amzn.eu/d/9RAQBTP