coolant temp with electic fan

I have mine go on around 185 for normal driving. I've never seen one that you can turn off at a different temp.

I have mine on a switch, not by temp. I just switch it on after I start the car, and turn it off about a minute after I shut her down. I have a 180 deg. thermostat, and it stays close to that temperature, a little higher in traffic, lower on the highway.