Infrared Temp Range: -67 to 428 Degrees F (-55 to 220 Degrees C). Probe Temp Range: -67 to 626 Degrees F (-55 to 330 Degrees C). Field of view ratio 1: 1. Adjustable emissivity. Backlit LCD display The 52226 Dual Temp Thermometer offers both infrared and contact probe technologies. Other features include lock mode for hands free scanning and Minimum/maximum capture mode. Contact probe locks safely on the side of the unit.