Our trailer is a 2016 - it came with this thermostat.
I'm betting quite a few Lances have the same one - ours still works fine, but it is difficult for my tired old eyes to see the temp as it is not backlit, especially at night. I've been looking off and on for a replacement and stumbled on to this one.
Amazon.com: Coleman 9420-381 Heat/Cool Wall Thermostat - Digital, Black : Tools & Home Improvement
It has all of the functionality of the old one, the dial controls everything - rotate the dial to whatever setting you want - heat/cool/fan - then press the dial to fine tune that selection. Happy so far with it - about $45.
And - it is backlit - just move the dial.
I can't give much of a review yet as it has only been installed for a couple of days so far - pretty easy to change over.