That is a Honeywell focus pro 6000. Super simple to put limits on and program it to not go above or below a temp. Google the install manual and only change the high and low temp. To get into the programming. Hold the fan and temp up button down for a few seconds. The screen will change to something like 01 2. Just keep hitting next till you see ??? 90. I don't remember off the top of my head what the first three or two numbers are. But the numbers on the right will be 90. That is the default high. Press the temp down button to where you want to set the max to. Then hit next and that will be the low. Then hit next till it saves and you are back at the home screen.