Built-in InfraRed Thermometer for non-contact temperature measurement to 932"F (500"C). Min/Max, Data hold and Auto power off functions Built-in USB port IR Thermometer: 30:1 distance to target ratio. Type K Thermometer for contact temperature measurement to 2501"F (1372"C). Large triple LCD backlit display. 2% RH accuracy Specifications Dew Point -68 to 60 "C (-90.4 to 140 "F) Wet Bulb -6.88 to 140 "F (-21.6 to 60 "C) Temperature (Type K) -148 to 2501 "F (-100 to 1372 "C) Relative Humidity Accuracy "2% Temperature (Air) 14 to 140 "F (-10 to 60 "C) Certifications CE IR Temperature Range (Metric) -50 to 500 "C IR Temperature Range (Imperial) -58 to 932 "F IR Temperature Resolution "2% or "4"F/2"C Distance to Target Ratio 30:1 Targeting Dual Laser Temperature (Air) Accuracy "(2% "4"F/2 "C) Weight 350g Power 1 " 9V battery Relative humidity 0 to 100% Dimensions 255 " 75 " 50mm