mqtt:

  binary_sensor:

    - name: "煤气报警"

      state_topic: "home/esp8266/gas/status"

      payload_on: "ALERT"

      payload_off: "OK"

      device_class: gas

    - name: "MX-21F 感应器"

      state_topic: "home/esp8266/mx21f"

      payload_on: "on"

      payload_off: "off"

      device_class: motion

    - name: "水浸报警"

      state_topic: "home/esp8266/water/status"

      payload_on: "LEAK"

      payload_off: "DRY"

      device_class: moisture

device_class: motion 这个值，决定了状态翻译成什么