Recommended way to integrate into home assistant

[bernieke]

Hi,

Can you tell which is the recommended way to integrate with home assistant OS running on a raspberry pi 5? I'm looking for the most reliable method with a latency of less than 200ms to activate a relay.
* kcs firmware with mqtt over wifi
* esphome firmware with esphome over wifi
* usb (is this supported on home assistant OS?)
* bluetooth (is this supported as a client, and is it supported on home assistant OS?)
* ...?

Thank you,
Bernard

[admin]

download KCS v3 firmware. use ethernet is better.