Yes, there is another arrangement with single coil 120V in the low range. Didn't those have 6 settings instead of 5? HI, 2, MED, MED-LO, LO, WM. I had several but that was 65-75.
From the description, the sensor "prevents burning" so it is most likely a thermal cutout that overrides the setting and shuts the burner off around 180*.