Has the ability to track maximum, minimum, average and differential readings Includes a bright colour display for ease of use in both sunlight and dimly lit environments Tri-colour LEDs quickly indicate when temperatures are within set parameters (green), above (red) or below (blue) Built-in laser pointer identifies target area User selectable °F or °C Digitally adjustable emissivity Audible (beep) and visual (tri-colour LED) user adjustable alarms Internal memory stores up to 5 pre-set high & low alarms and 5 emissivity settings Trigger lock for continuous monitoring Features low battery indication and auto shut-off Items with calibration certificates are non-returnable and non-refundable due to the limited validity of the certification Emissivity Adjustable Response Time 250 ms Spot Size Ratio 30:1 Temperature Range -26 - 1472° F ( -32 - 800° C )