All I could afford wrote:
I tried doing the same thing many years ago to replace my very basic, heat only, two wire mechanical thermostat in my 1999 trailer. I had a very hard time locating a unit as simple as I needed, so I just ended up buying the most basic digital programmable thermostat I could find at Home Depot, and it has way more features than I will ever need, but it fulfills my purpose. I never program it, but the built in digital clock is a nice bonus
That was going to be my option, basic as i could find, If i didn't get any solid recommendations.
thanks.