I have a small oil heater with a manual switch and thermostat in my tent. That means it can be controlled by another device. Right now I'm running it on a timer so it comes on when the lights are off. Setting the thermostat can be difficult, though. Last night it got so hot I had to turn it off. I don't know why it decided to run so hot all of a sudden. My tent is in the house, though, so it will be no colder than the temperature inside the house. I can't run the heater through my fancy controller because the company is out of stock of the part needed to do it. I'll probably buy an Inkbird controller to use till the part for my controller is back in stock sometime next year. I see they have controllers for both temperature and humidity. I need both.