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Heat Index Psychrometer

Extech RH25

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The Extech RH25 Heat Index Psychrometer pen easily monitors heat index during hot, humid days in helps to prevent heat stroke during outdoor activities or sporting events. Its pocket-sized design makes it convenient to carry it wherever you go. Complete with CR2032 battery.

General Specifications
Dew Point
-108.4 to 122 °F (-78 to 50 °C)
Dew Point Max Resolution
0.1 °F/ °C
Heat Index
-50.8 to 401 °F (-46 to 205 °C)
Heat Index Max Resolution
0.1 °F/ °C
Relative Humidity
0 to 99.9%
Relative Humidity Basic Accuracy
Relative Humidity Max Resolution
Temperature (Air)
-4 to 122 °F (-20 to 50 °C)
Temperature (Air) Basic Accuracy
Temperature (Air) Max Resolution
Wet Bulb
-4 to 122 °F (-20 to 50 °C)
Wet Bulb Globe Temperature (WBGT)
-13 to 130 °F (-25 to 54.5 °C)
Wet Bulb Globe Temperature (WBGT) Max Resolution
0.1 °F/ °C
Wet Bulb Max Resolution
0.1 °F/ °C
Additional Details
5.5 × 1.4 × 0.7" (140 × 35 × 18mm)
1 × CR2032 (1.5V) battery
2 years
1.8oz (50g)
Related Documents
Export Restrictions

Export Restrictions

The information contained in this page pertains to products that may be subject to the International Traffic in Arms Regulations (ITAR) (22 C.F.R. Sections 120-130) or the Export Administration Regulations (EAR) (15 C.F.R. Sections 730-774) depending upon specifications for the final product; jurisdiction and classification will be provided upon request.

Extech RH25