Optical resolution 12:1 Units of measurement are °C and °F Temperature measurement range -50 to +950° C (-58 to +1742° F) Accuracy ± 1.5 % or T > 0° C Spectral response 5 -14 µm Measurement resolution 0.1° C (0.1° F) Reaction time 500 ms Operating temperature 0 to +40° C (32 to 104° F) Humidity 10 - 95% RH Automatic shutdown after 30 s of non-use Battery 9V LCD screen Dimensions 108 x 177 x 49 mm Weight (with batteries) 200 g CE conformity