Psychrometer with Infrared ThermometerThe Extech HD500 combines the functions of a humidity meter, Type K thermometer, and IR thermometer with laser spot for non-contact surface temperature readings. Measurements are displayed on a large triple LCD backlit display.
Additional FeaturesThis 3-in-1 meter measures Relative Humidity (0 to 100 percent RH), Dew Point (-90.4 to 140 degrees F/-68 to 60 degrees C), and Wet Bulb (-6.88 to 140 degrees F/-21.6 to 60 degrees C). The HD500 also has an IR thermometer with laser spot for non-contact temperature scans -58 to 932 degrees F (-50 to 500 degrees C) with 30:1 distance to target ratio. A built-in Type K Thermometer measures air and contact surface temperature from -148 to 2501 degrees F (-100 to 1372 degrees C). Auto Power Off to conserve battery life.
What's in the BoxComes with Windows-compatible software with cable, Type K bead wire temperature probe, hard carrying case, 9-volt battery, and user manual.

More Extech Instruments to Choose FromRH390 Dual Display Hygro-Thermometer PsychrometerPrecision meter measures relative humidity from 0 to 100 percent with an accuracy of ±2 percent RH and Temperature from -22 to 199 degrees F (-30 to 100 degrees C) with an accuracy of ±1.8 degrees F/1 degrees C. Capacitance RH sensor provides a response time of less than 30 seconds. The dual backlit display of Temperature and Humidity can be switched to show Humidity and Dew Point (-22 to 199 degrees F/-30 to 100 degrees C), or Humidity and Wet bulb (32 to 176 degrees F/0 to 80 degrees C). Slim design with rubberized sides provides improved grip. Other features include data hold, Min/Max record, auto power off and low battery indicator. Comes complete with carrying case, 9-volt battery, and user manual.
RH490 Precision Hygro-Thermometer PsychrometerSpecifically designed for HVAC and water damage restoration contractors, this meter measures Temperature (-22 to 199 degrees F/-30 to 100 degrees C), Humidity (0 to 100 percent RH), Dew Point (-22 to 199 degrees F/-30 to 100 degrees C), Wet Bulb (32 to 176 degrees F/0 to 80 degrees C), and Mixing Ratio in GPP (grains per pound/grains per kilogram) 0 to 1120 GPP/0 to 160g/kg. Less than 30 second RH response time with 2 percent RH accuracy. RH490 also features dual backlit LCD display, Data Hold, Min/Max, Auto power off (with disable), and low battery indicator.