Getting information back from ttn tro node-red MQTT

Can someone please advise on how to get relevant info back from ttn?
I am sending temperature and humidity from Adruino with DHT11
Com port monitor:
Temperature: 3000
Humidity: 4900
Sending: mac tx uncnf 1 0BB81324
Successful transmission
How do I get this Hex back into something meaningful via MQTT as the node-red debug with # as the Topic shows time, date, led state, ID and just about everything except the temperature and humidity readings.
I’m sorry this is a bit of a basic beginers request but cannot find information required to progress.
Thanks in advance

Search on here MQTT and Decoders


Thanks Johan - I have some reading to do