home automation training -9 integrate KC868-Server to home assistant by MQTT

home automation training -9 integrate KC868-Server to home assistant by MQTT    1.MQTT communication structure diagram KC868-Server——– publish message: status of switch (status topic) Subscription message: turn on / off command (command topic) home assistant—— publish message:  turn on / off command (command topic) Subscription message: status of switch (status topic) 2.KC868-Server digital output…