Q3 Innovations ThermoHAWK Series Infrared Thermometer (http://rbi.ims.ca/4927-543). Small enough to fit on a key chain, this pen-sized thermometer measures temperature within as little as 0.5s without contacting the object. The unit employs a patent-pending thermopile sensor on a chip technology to provide infrared sensing capability and extends the calibration requirements to several years. The metal cylinder case prevents electromagnetic and electrostatic interferences and also eliminates the effect of ambient temperature changes during temperature measurements. Available in a temperature range of -27 to 230F for household use or -27 to 428F, the units have 2.5 percent accuracy.