Working with MQTT
MQTT is a method of transferring data from the hub to a computer system. The hub will act as a MQTT Publisher. To access this mode, the hub OPT switch needs to be set to 3. The hub has got to know the IP address of the MQTT broker, and in order to do this you need to "pair" the hub with the broker. This is done by using the special Ping command with a length of 40. The Ping command should be issued from the computer which is to act as the MQTT broker.