grumpus, you need to give us some additional information to go from.
Your question it too vague.
Make and model of your R/V and make/model of your heating/cooling system and thermostat.
Most thermostats (whether for A/C or furnace) have a display to set the temperature that also includes the indoor temp. Some manual controlled A/C units just have a temperature knob. (colder/warmer)
Some folks simply use a stand alone thermometer to display the indoor temperature.
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