USB Humidity/Temperature Datalogger

Extech RHT30

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The datalogger is designed with a rugged housing and a standard USB connector where stored readings (up to 48,000 data) are conveniently transferred to a PC in PDF or Excel® spreadsheet format when plugged in. Additional features include an 8-location logger bookmark, 6-language options, programmable sampling interval, adjustable alarm, and password-protected security log-in. Large LCD optimizes viewing and the smart LED provides color-coded humidity, and temperature reading status.

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  • Easy-to-use Datalogger

    Compact size housing with built-in NTC thermistor and capacitive humidity sensor designed with standard USB connector for easy data downloading to a PC

  • User Programmable Settings

    6 languages, sample rate, start delay time, alarm delay time, high/low alarm range, and security feature

  • 48,000 readings

    Start button begins continuous datalogging, which continues until memory is full at 48,000 readings (24,000 for each parameter: Humidity/Temperature), or when Stop button is pressed

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General Specifications
Datalogging Interval
30 seconds to 2 hours
24,000 points
Relative Humidity
0.1 to 99.9%
Relative Humidity Basic Accuracy
Relative Humidity Max Resolution
Temperature (Air)
-22 to 158°F (-30 to 70°C)
Temperature (Air) Basic Accuracy
±1.0°F (±0.5°C)
Temperature (Air) Max Resolution
Additional Details
4.3 × 1.6 × 0.75" (110 × 40 × 19mm)
2 × CR2032 (1.5V) batteries
2 years
1oz (90g)

Extech RHT30