The Dwyer IR4 High Accuracy Infrared Temperature Digital Thermometer, Laser Site, -76 to 932°F utilizes infrared technology for precise, non-contact temperature measurement. When measuring smaller objects or at greater distances, the 12:1 distance to target ratio of the IR4 can provide measurements within 1% of reading. This model has a single point laser sighting for aligning the beam to the target. In addition, this model can display maximum, minimum, differential and average temperature measurements. Adjustable emissivity allows the thermometer to measure the temperature of most surfaces without any external calculations. A K-type thermocouple can plug into the handle of the thermometer in order to take surface and internal temperatures simultaneously. Audible alarms can be used for safety checks.