Bespoke Sensor help

Good Morning
I am hoping someone could point me in the right direction please.
I have a 16 channel UDP controlled I/O board.
I use node red to monitor the state of the inputs and if for example input 1 changes state I broadcast via MQTT and I can see this change in home assistant when monitoring the topic. My issue is that I don’t understand how to display this state change in a dashboard or if you can create a binary sensor manually.
I have scoured you tube and the forum and would be very grateful of assistance.

Thank you in anticipation

You need to create mqtt binary sensors: