This infrared thermometer features a 12:1 distance to spot ratio and has been drop tested up to 6. 5 feet. The R2310 has the ability to track maximum, minimum, average and differential readings and the ability to set high/low alarms and monitor continuously. Built-in laser pointer identifies target area. User selectable degrees Fahrenheit and Celsius. 12:1 distance to spot size ratio. Digitally adjustable emissivity. Max, Min, Average and Differential readings. Backlit display. High and low alarms. Dustproof and drop tested. Trigger lock for continuous monitoring. Low battery indication and auto shut off. Temperature range of -31 to 1202 degrees Fahrenheit (-35 to 650 degrees Celsius). Accuracy of 32F (0C):3. 6F (1. 8C) or 1. 8% rdg. ,whichever is greater and.