From http://www.wifewithaknife.com/griddle-temperatures.html based on readings NOT taken by an infrared sensor. His griddle has a heat sensor built in with a digital read out and the readings below surely came from that read out.

Bacon 275°
Beef, Steak or Carne Asada 375°
Buns, buttered 350°
Burgers, beef or turkey 375°
Chicken Breasts, boneless skinless 325°
Eggs, Fried or Scrambled 315°
Fish, with skin 375°
French Toast 325°
Lamb, loin chops 350°
“Medium Temperature” 325°
Pancakes 390°
Pork chops 375°
Potato Skins, baked then halved and warmed 325°
Potatoes, hash browned 340°
Potatoes, “fries” style 325° – 350°
Potatoes, mashed potato cakes 300°
Quesadillas 350°
Salmon 375°
Sandwich, cheese/meat 325° – 350°
Sausage 325°
Tortillas, raw or reheating 440°
Zucchini, sliced 325°