PORTER-CABLE PCC582B 9-Volt Infrared Thermometer Infrared thermometer for non-contact surface temperature measurements shows energy leaks or hot/cold spots Temperature Indicator Beam changes color to show temperature differences Three temperature threshold settings -1-Degree, 5-Degree, 10-Degree for quickly detecting different temperature changes 12:1 spot ratio for more accurate readings Accurately measures temperatures from -22-Degree F to 590-Degree F allowing for use in a greater number of applications