If you remove the cover on the display panel, you might find a brand or number to help identify the make of the levels display. I tried searching the image to find a match, (even turning photo and trimming the photo to just the panel) and came up empty. I also checked your profile to try to see what type of RV you own. It said 'Golf Stream' which I'm guessing should be 'Gulf Stream'. You might check with them.
https://www.gulfstreamcoach.com/
You might also add a signature to your 'CP user' to make it easier to help you, identifying year, make, model, of your RV.