Extech IR Hygro-Thermometer – RH101

In stock

This instrument tests both the humidity and air temperature with the added bonus of a non-contact IR thermometer for surface temperature measurement. Great for greenhouse monitoring.

Extech IR Hygro-Thermometer – RH101

Humidity, Air Temperature plus IR for non-contact temperature measurements


  • Large backlit LCD dual display
  • Primary and Secondary displays: Primary display is user selectable for IR or Humidity; Secondary displays ambient temperature
  • InfraRed thermometer has built-in laster pointer for precise targeting
  • 8:1 distance to target ratio and fixed 0.95 emissivity
  • Switchable °C/°F temperature units
  • Auto power off, Max and Data Hold
  • Remote humidity sensor with 39” (1m) coiled cable measures both humidity and ambient temperature
  • Over range indication
  • Includes:
    • Built-in stand
    • Holster
    • Humidity/Temperature probe
    • 9V battery
    • Carrying case
  • 1 year warranty

This versatile thermometer is a great for measuring temperatures in the air and on surfaces while simultaneously measuring the humidity. These three variables are great for demonstrating heat stresses facing plants and animals, as well as atmospheres created by heating components in the winter time.

This instrument is great for greenhouse maintenance as well. With the ability to measure humidity and temperature it accurately monitors growing conditions while the non-contact IR thermometer can measure specific surface temperatures of plants or growing surfaces.

The uses of this meter are almost limitless with a wide temperature measurement range from -58 to 932°F (-50 to 500°C). This meter features a rugged hard plastic exterior for durability and a targeting laser for precise surface temperature measurements. The RH101 IR Hygro-Thermometer User Manual is attached to this page to answer any additional questions.


  • Humidity: 10% to 95%
  • InfraRed Temperature: -58 to 932°F (-50 to 500°C)
  • Air Temperature: -4 to 140°F (-20 to 60°C)
  • Emissivity: 0.95
  • Field of View: 8:1
  • Dimensions: 5.9 x 2.95 x 1.57" (150 x 75 x 40mm)
  • Weight: 7oz (200g)

Unit Ship Weight: 1 lb

Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account


Copyright © 2018 Agriculture Solutions LLC. All rights reserved.