Infrared Thermometer Temp Range (F) - Infrared -58 Degrees to 1000 Degrees Temp Range (C) - Infrared -50 Degrees to 538 Degrees Focus Spot Size and Distance - Infrared 1 in @ 10 in Temp Accuracy (C) - Infrared +/-4.0 Degrees From -50.0 Degrees to 0.0 Degrees +/- 2.0 Percent of Reading or +/-2.0 Degrees Whichever is Greater from 0.0 Degrees to 538.0 Degrees