New Extech RHT30 USB Humidity/Temperature Datalogger View larger

Extech RHT30 USB Humidity/Temperature Datalogger

RHT30

New product

Easy-to-use Datalogger Records Humidity and Temperature with Date/Time Stamp

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$200.00 tax excl.

More info

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.


  • Compact size housing with built-in NTC thermistor and capacitive humidity sensor designed with standard USB connector for easy data downloading to a PC
  • 5-digit LCD display with battery life indicator
  • User programmable settings: 6 languages, sample rate, start delay time, alarm delay time, high/low alarm range, and security feature
  • Status Indication via Red and Green LEDs
  • 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
  • Bookmark 8 locations in a data recording log with a press of the Mark button
  • Long battery life (approx. 3 months)
  • Generates a PDF report or Excel® spreadsheet with data and trending graph when plugged into a PC after datalogging is completed (Adobe® Reader® required)
  • Max/Min function
  • Includes 2 CR2032 batteries, USB cover (can be used as a stand), wall mounting screw, and built-in hanger



SpecificationsRangeMax ResolutionBasic Accuracy
Humidity0.1 to 99.9%RH0.1%RH±3%RH
Temperature (Air)-22 to 158°F (-30 to 70°C)0.1°±1.0°F (±0.5°C)
Datalogging interval30 seconds to 2 hours  
MemoryTemperature: 24,000 points; Relative Humidity: 24,000 points
Dimensions/Weight4.3x1.6x0.75" (110x40x19mm)/ 1oz (90g)

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