I use one of these quite often when I'm cooking something for a long-ish time in the frying pan:
www.amazon.com/gp/product/B00DMI632G/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
That way I can keep from overheating the pan, and also keep a constant temperature (by adjusting my electric burner heat level as needed). I use different kinds of oils - olive, avocado, peanut, coconut, sesame, etc.
https://en.wikipedia.org/wiki/Template:Smoke_point_of_cooking_oils
For high-temp searing, I use peanut or avocado oil, for their high smoke points. For low-temp stuff, it's usually olive oil.