Extech® HD500 Psychrometer/Infrared Thermometer, 0 to 100%, +/-2% HR, +/-4 deg F Temperature, 10 in H x 2.9 in W

The Extech HD500 psychrometer, this handheld meter measures and displays Air temperature, relative humidity, dew point, wet bulb and also surface temperature using the built-in IR thermometer. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.