Specify the address of the MQTT broker to which the client is to be connected.
Default:
mqtt.thingspeak.com
Specify the user name for the MQTT broker to authenticate the client.
Default:
<empty>
Specify the password for the MQTT broker to authenticate the client.
Default:
<empty>
Specify an identifier (ID) for the MQTT client. The ID must be unique for each client that is connected to a MQTT broker. The broker uses the ID to identify the current state of the client.
Default:
<empty>