myMectronic
myMectronic

A Premier B2B Part Search

EXTECH RH401 Environmental Meter

The Extech RH401 is a comprehensive environmental measurement device featuring triple LCD display with backlighting, capable of measuring air temperature, humidity, surface temperature, dew point, and wet bulb conditions. It incorporates a built-in infrared thermometer with laser pointer, 8:1 spot-to-distance ratio, and adjustable emissivity from 0.3 to 1.0 for accurate surface temperature readings. It calculates the temperature difference between IR surface and dew point, essential for mold prevention. Its retractable humidity sensor protects during transport, making it suitable for laboratories, HVAC/R, and moisture-sensitive environments.

Authorized Distributors
Part No:RH401
Stock:0
Inv Date:06-05-2026
Price: Unit price: $230.99
Buy/RFQ:
Part No:RH401
Stock:0
Inv Date:06-05-2026
Price: Unit price: $230.99
Buy/RFQ:
Part No:RH401
Stock:0
Inv Date:06-05-2026
Price: Unit price: $275
Buy/RFQ:

EXTECH RH401 Environmental Meter Specifications:

  • Humidity Range: 10 to 90% RH, Resolution: 0.1% RH, Accuracy: 23% RH
  • Internal Temperature Range: -4 to 122°F (-20 to 50°C), Resolution: 1.8°F or 1°C, Accuracy: ±1.8°F/±1°C
  • External Temperature Range: -328 to 2498°F (-200 to 1370°C), Resolution: 0.1°, Accuracy: ±0.3%
  • Wet Bulb Temperature: -6.9 to 122°F (-21.6 to 49.9°C), Resolution: 0.1°, Accuracy: ±0.3°F
  • IR Thermometer Range: 68.0 to 499°C, 8:1 spot-to-distance ratio, Adjustable emissivity: 0.3 to 1.0
  • Built-in laser pointer, Retractable humidity sensor, Auto power off, Low battery indicator, RS-232 interface included
  • Power: 4 AAA batteries, Weight: 5.02 oz (153 g), Included accessories: calibration bottles, RS-232 cable, carrying case

Buy the Extech RH401 – Reliable Environmental Monitoring for Industrial Applications

Enhance your environmental monitoring with the Extech RH401. Featuring triple LCD display, IR surface temperature measurement, humidity, dew point, and wet bulb data, this device is perfect for laboratories, HVAC systems, and moisture-sensitive environments. Its infrared thermometer with laser pointer and adjustable emissivity ensures precise readings in hard-to-reach areas, while the retractable humidity sensor provides durability during transport. Easy to operate and packed with essential features, the RH401 is your ideal choice for accurate environmental assessment.

Buy Extech RH401 now and experience unmatched environmental accuracy with versatile temperature, humidity, and surface measurements for industrial and commercial use.

Frequently Asked Questions

Where can I buy EXTECH RH401?

You can click on the BUY or RFQ button to purchase RH401 from an authorized EXTECH distributor.

How do I troubleshoot issues or seek technical support for part RH401?

You can download the RH401 datasheet or visit the EXTECH website for support.

Who is the manufacturer of RH401?

EXTECH

EXTECH Part List

Browse and search other EXTECH parts, locate datasheets and stock

Sponsored by