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EXTECH RH25 Environmental Measurement Device

The Extech RH25 Heat Index Psychrometer Pen provides accurate environmental measurements including heat index, WBGT, humidity, ambient temperature, dew point, and wet bulb temperature. Its compact pen-sized design allows easy portability for outdoor and indoor use during sports or work activities. Equipped with a multiparameter sensor, it offers user-programmable alarms, min/max/average data recording, and a data hold function. The device features auto power-off with an option to disable it, powered by a CR2032 battery, making it ideal for monitoring heat stress and sunlight impact.

Authorized Distributors
Source:DigiKey
Part No:RH25
Stock:0
Inv Date:06-05-2026
Price: Unit price: $119
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Source:DigiKey
Part No:RH25
Stock:0
Inv Date:06-05-2026
Price: Unit price: $344.6
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Part No:RH25
Stock:2
Inv Date:06-06-2026
Price: Unit price: $119
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Part No:RH25
Stock:0
Inv Date:06-05-2026
Price: Unit price: $119
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Part No:RH25
Stock:0
Inv Date:06-05-2026
Price: Unit price: $351.49
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Part No:RH25
Stock:1
Inv Date:06-05-2026
Price: Unit price: $101.13
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Part No:RH25
Stock:0
Inv Date:06-05-2026
Price: Unit price: $134.35
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Part No:RH25
Stock:0
Inv Date:06-05-2026
Price: Unit price: $149
Buy/RFQ:
Part No:RH25
Stock:0
Inv Date:06-05-2026
Price: Unit price: $119
Buy/RFQ:
Authorized Distributors
Part No:RH25
Stock:0
Inv Date:06-05-2026
Price: Unit price: $134.35
Buy/RFQ:
Part No:RH25
Stock:0
Inv Date:06-05-2026
Price: N/A
Buy/RFQ:

EXTECH RH25 Environmental Measurement Device Specifications:

  • Temperature Range: -4 to 122°F (-20 to 50°C), resolution 0.1°F/°C, accuracy ±1°F/0.6°C
  • Relative Humidity Range: 0 to 99.9%RH, resolution 0.1%RH, accuracy ±3.9%RH
  • Wet Bulb Temperature: -4 to 122°F (-20 to 50°C), resolution 0.1°F/°C
  • Dew Point: -108.4 to 122°F (-78 to 50°C), resolution 0.1°F/°C
  • Heat Index: -50.8 to 401°F (-46 to 205°C), resolution 0.1°F/°C
  • WBGT: -13 to 130°F (-25 to 54.5°C), resolution 0.1°F/°C
  • Dimensions: 5.5x1.4x0.7 inches (140x35x18mm), Weight: 50g
  • Battery: CR2032, Auto power off with disable option, Portable and user-friendly design
  • Includes: Multiparameter sensor, programmable alarms for heat index and WBGT, min/max/average recording, data hold function

Buy the Buy Extech Heat Index Psychrometer RH25 Online

Purchase the Extech RH25 portable environmental measurement device online today to monitor heat index, WBGT, humidity, temperature, dew point, and wet bulb temperature accurately. Its compact design makes it convenient for outdoor or indoor use during sporting events or workplace monitoring. Featuring programmable alarms, min/max/average recording, and data hold, it ensures comprehensive environmental assessment. Powered by a reliable CR2032 battery, this device is essential for safeguarding against heat stress and sunlight effects during outdoor activities or industrial applications.

Get Extech RH25 today—built for precise environmental monitoring and long-lasting durability.

Frequently Asked Questions

Where can I buy EXTECH RH25?

You can click on the BUY or RFQ button to purchase RH25 from an authorized EXTECH distributor.

How do I troubleshoot issues or seek technical support for part RH25?

You can download the RH25 datasheet or visit the EXTECH website for support.

Who is the manufacturer of RH25?

EXTECH

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