Professional grade laser thermometer for food safety applications with an advanced temperature processor that meets HACCP guidelines for accuracy. Special detector and filtering for improved immunity to water vapor that will cloud lens causing false readings. Distance to Target [D:S] ratio of 16:1 ensures accurate readings from greater distances. Infrared Temperature Range -67°F to 536°F (-55°C to 280°C) Infrared Accuracy (between 32F and 150F) ±1.8°F; or 2% of reading above 150F 0.1° resolution for accurate readings Selectable temperature units F/C. Emissivity preset for food applications Bright large amber back-lit LCD display 1 x 9 Volt battery (included) provides nominal 80 hours continuous operation. NIST traceable factory calibration option. The FI40L is THE last word when critical surface temperatures are needed for food equipment [ex. grills, ovens, pizza ovens, coolers, freezers, stove top ranges, hot coals-grills for BBQ]; food preparation-cooking [ex. hot oils, soups, chocolate, candy and more] holding areas [ex. buffets – deli counters – fish – meats – bakery- chilled beverages – beer – wine]. Many many other uses for an accurate infrared thermometer : ex. hot tubs, spas, bath water, pools, baby car seats, playground equipment, beach sand, ….