The style thermostat you have does not use a remote sensor. It's the same style we had in our previous adventurer.
Our current adventurer has a different style thermostat that does use remote sensors. Rather than 2 thermostats our coach has a single thermostat in the hall with 2 zones. There is a remote sensor in the living area for zone 1 and another in the bedroom for zone 2.
We have 2 AC/heat pumps. Both zones are available when using the either AC or the heat pumps. However when using the gas furnace only zone 1 is active. Essentially all that means is that only the temperature in the living area has to meet the thermostat setting to turn on or off the gas furnace.
Here's a link to the 2015 Adventurer brochure.
It has the same thermostat and sensors as our second generation 2013 model. The thermostat is pictured on page 3. The remote sensor for the living area is on the kitchen island pictured on page 5. The 2013 and 2014 brochures were not updated to show the correct thermostat and remote sensors.
About the only way I know of to measure the temperature in the living area of your coach would be to change out the thermostat and add remote sensors. I'm not sure it would be cost effective