[
  {aircon, [
    %% 离线判断时间间隔，单位：(秒)
    {heartbeat_ticker, 120},

    {emqx_server, [
      {host, "39.98.184.67"},
      {port, 1883},
      {tcp_opts, []},
      {username, "test"},
      {password, "test1234"},
      {keepalive, 86400},
      {retry_interval, 5}
    ]},

    {efka_server, [
      {host, "39.98.184.67"},
      {port, 3361}
    ]}
  ]}
].