I have setup zigbee2mqtt with my cc2531 and then have the Homekit integration running.
It works with Ikea bulbs lights and a Aqara temp sensor.
But i have tried to add to switches.
Ikea 5 button remote
Hue 4 button dimmer switch
They show up as devices in HA and i can see the Actions trigger.
But in Homekit the only thing showing up is the update available entity.
So i cannot setup the switch in Homekit.
Its the action entity that is the trigger i gues and that is in HA and i chose it to include in the Homekit settings.
I guys it is supportet as a switch?