The ThermoHawk 200 measures the surface temperature of objects by using infrared technology. Q3 Innovations claims that infrared technology is substantially more accurate when compared to comparable contact devices (hence the +/- 2.5% accuracy). Also most contact devices require that you wait 30 seconds to obtain a reading whereas the ThermoHawk has a ½ second response time. The Thermohawk measures the temperature on an object by using a 1:1 aspect ratio. If you are measuring an ice cube that is a 1" x 1" square then you will hold the ThermoHawk 1" away from the cube and then take the measurement.

[NLN=ThermoHawk 200 Review]http://www.computingondemand.com/reviews/misc-Q3innovations-Thermohawk200/page1.php[/NLN]