Review on 🌡️ E-Outstanding DC 12V Digital Temperature Controller for Cooling/Heating -50-100 Degree Switch Module W1209 + Acrylic Box by David Caldwell

No problem connecting my device as a thermostat for my RV's propane stove. It seems to be working properly and setting the temperature is easy, except I would need to lower the temperature significantly from the current reading for it to activate (stove and red light on). Then it will not turn off at the set temperature. I would have to raise it well above the current value for it to turn off. It was never a serial shutdown or anything that would help me diagnose the problem. Otherwise it seemed to work fine. I checked and rechecked my wiring, but the built-in LED made it clear that the device itself was to blame. I really wanted this to work. I was still hoping that I would realize I installed it wrong, but it's not that much. Otherwise it looks solid, nice and compact. Maybe I'm lost