I hate to wake up in a cold camper.
The first one I used was in my pop up slide in camper.
It came on at 6;30AM and I woke up to a warm camper.
I had one in the 13" Scamp
I just sold.
I think all Digital Thermostats are dual purpose for heat and cold.
You just use the heat setting.
is necessary to power the digital portion of the thermostat.
I use the Honeywell Model #RTH2410B.
I bought mine at our local Ace hardware for about $30.00.
It's very easy to program.
Hook your wires to the W and R lugs on the thermostat base and your ready to go.
I have this one on the pellet stove in my home.