The Dwyer IR4 infrared thermometer utilizes infrared technology for precise, non-contact temperature measurement. For standard applications, the 20:1 distance to target ratio on the IR4 provides accurate measurements within 1% of reading. The IR4 has single-point laser sighting for aligning the beam to the target and 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 in order to take surface and internal temperatures simultaneously. Audible alarms can be used for safety checks.