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RHTemp101A Data Logger

State-of-the-art humidity and temperature data logger. Includes ISO17025 accredited calibration certificate.

Availability: 5-7 Business Days

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For many applications that require the monitoring of both ambient temperature and humidity, the RHTemp101A is the ideal solution. Used for warehouse and museum monitoring as well as HVAC studies, the RHTemp101A can measure ambient temperature from -40 °C to 80 °C and humidity from 0 %RH to 95 %RH.

This compact device can be placed virtually anywhere to provide an accurate temperature and humidity record of the environment. Use several RHTemp101A’s to capture a thorough mapping of large rooms or facilities.

Using the MadgeTech Software, the device can be configured to record at user selected intervals as frequent as one reading every second to as seldom as one reading every 24 hours. With a 10 year battery life and the ability to store up to 1,000,000 readings per channel, the RHTemp101A is perfect for long term data logging studies.

This affordable, low maintenance device is popular for many applications in the medical & pharmaceutical industry, storage monitoring and general purpose humidity recording.


Temperature Sensor Precision RTD Element
Temperature Range -40 °C to +80 °C (-40 °F to +176 °F)
Temperature Resolution 0.01 °C (0.018 °F)
Temperature Calibrated Accuracy ±0.5 °C (±0.9 °F) (0 °C to 55 °C)


Humidity Sensor Internal semiconductor
Humidity Range 0 %RH to 95 %RH
Humidity Resolution 0.1 %RH
Humidity Calibrated Accuracy ±3.0 %RH typical at 0 °C to 55 °C
RH Units %RH, dew pt., water vapor, concentration (mg/hl)


Memory 1,000,000 readings per channel; software configurable memory wrap
500,000 readings in multiple start/stop mode
Reading Rate 1 reading every second up to 1 reading every 24 hours
Alarm Yes, Humidity
Baud Rate 115,200
LED Indicators Red & Green
Push-Button Start Yes
Battery Life 10 years typical at a 15 minute reading rate
Material ABS plastic
Dimensions 1.4 in x 2.2 in x 0.6 in (36 mm x 56 mm x 16 mm)
Operating Environment -40 °C to +80 °C (-40 °F to +176 °F), 0 %RH to 95 %RH non-condensing
Required Interface Package IFC200
Approvals CE
Weight 0.1250 LBS

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4 Item(s)

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  1. Very easy to use Review by Boris

    I have been very pleased with this logger. (Posted on 2/7/13)

  2. RHTemp101A Data Logger Review by Ashley Stokes

    Thanks for the opportunity to review this product. The reliability and accuracy is terrific. The only problem is that it is not very tough or water resistant. I might have to change products because of this, but I really do like this data logger. (Posted on 12/27/12)

  3. Super easy and totally convenient - just bought a 2nd one Review by Michael Helmbrecht

    The RHT101A data logger is really easy to use, sensitive, and basically fits all my needs. I liked it enough that I recently bought a second one. (Posted on 10/31/12)

  4. Works Great Review by Tim Craig

    This temperature and humidity logger works great and seems very sensitive. I have had it recording for around 3 weeks now with no problems. (Posted on 8/2/12)

4 Item(s)

per page