Connection to the Home Assistant app?

[admin]

for example, here is relay1 of KC868-A32:

Code:

mqtt:
  switch:
   - name: 'a32-kcs-output-1'
     unique_id: a32-kcs-output-1
     state_topic: 'KC868_A32/08F9E08B1F58/STATE'
     command_topic: 'KC868_A32/08F9E08B1F58/SET'
     payload_on:  '{"output1":{"value":true}}'
     payload_off:  '{"output1":{"value":false}}'
     value_template: '{{ value_json.output1.value }}'
     state_on: true
     state_off: false

replace by your own serial number, check INDEX webpage what serial number have showed.