REED Instruments FS-200-NIST Infrared Thermometers; Display Type: LCD ; Accuracy: -50 to -200C (-58 to 40F): 150C (190F); -20 to 2000C (4 to 3920F): 12% of reading or 120C (140F) ; Compatible Surface Type: Concrete; Dark; Dull; Light ; Battery Chemis