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Extech RHM15 Compact Indoor Temperature and Humidity Meter

Extech  |   Mfr# RHM15  |   Item# DO-39759-08

$24.99 USD/EACH

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  • Simultaneous display of Temperature and Humidity
  • Built-in memory stores maximum/minimum readings
  • Clear button resets maximum/minimum measurements
  • Temperature: 14 to 140°F
  • Humidity: 10% to 99% RH
  • Basic accuracy: ±5% RH, ±2°F
  • Low battery indication
Miniature Hygro-Thermometer ideal for monitoring Temperature and Humidity conditions in enclosed or open space environments. It helps gauge proper heat and moisture levels and it also records high and low extremes during the day.
What's Included:
built-in tilt stand and LR44 battery.
Product Type Thermohygrometer
Temp range 14 to 140°F
RH range (min) 10%
RH range (Max) 99%
RH range 10%-99%
RH accuracy ±5%
RH resolution 1%
Min temperature (º F) 14
Max temperature (º F) 140
Temp accuracy ±2°F
Temp resolution
Dimensions 2 x 1.5 x 0.63" (51 x 38 x 16mm)
CE Compliance Yes
Qty/ea 1
Manufacturer number RHM15
Brand Extech
Display LCD
Power LR44 or AG13 battery


at $153.00 USD/EACH
Usually ships in 7 days.

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Questions and Answers

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3 Questions | 3 Answers
Displaying questions 1-3
  • Q:

    Does it record the minimum and maximum temperature and humidity over any period until it is reset?
    Asked on 5/11/2016 by Ed from Atlanta, GA

    1 answer



      That is correct, the minimum and maximums will display from the last reset and you can use the CLEAR button on this to reset the min/max memory at any time.

      Answered on 5/11/2016 by Rishi from Technical Support
  • Q:

    Does this product have a memory to track differences?
    Asked on 11/4/2015 by Claire from United States

    1 answer



      This product has a built in memory, but only tracks the minimum and maximum readings.

      Answered on 11/4/2015 by Katie from Technical Support
  • Q:

    Is the sensor hard-wired to the display? How close must the display be to the sensor?
    Asked on 2/10/2015 by PJ from Boise, ID

    1 answer



      There is no separate sensor, it is integrated into the display.

      Answered on 2/10/2015 by Dan from Technical Support
Displaying questions 1-3

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