Insert units to a field on dashboard text

Hi @AnakinO7 welcome to the forums.

In core Node-RED, there is a "template" node (the orange one, not ui-template). It allows you to combine incoming messages and message properties, with text, for example you could write:

{{ msg.payload }}°C

You could then wire this template to the ui-text node. When passed to the text node, it will render with the °C units.