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Extech RHT20
 Humidity and Temperature Datalogger

  • USB interface for easy setup and data download
  • Selectable data sampling rate: 1 second to 24 hours
  • User-programmable alarm thresholds for RH and Temperature
  • LCD displays current readings, Min/Max, and alarm status
  • Complete with 3.6V Lithium battery, mounting bracket with combination lock, and Windows® 2000, XP, and Vista compatible analysis software
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Extech RHT20 Shown

Product Information
Datasheet 11 MB PDF
pdf helpPDF Help
Function Range Resolution Accuracy
Temperature -40 to 158°F 0.1°F/°C ±1.8°F
-40 to 70°C   ±1.0°C
Humidity 0 to 100%RH 0.1%RH ±3%RH
Datalogging interval 1 second to 24 hours
Memory Temperature: 16,000 points, Relative Humidity: 16,000 points
Dimension 3.7 x 1.9 x 1.2" (94.4 x 48.9 x31.2mm)
Weight 3.2oz (90.7g)
Ordering Information
Model Description Buy Online Price
RHT20 Extech RHT20 Humidity and Temperature Datalogger. Up to 16,000 readings for RH/Temp & user-programmable sample rate Buy Now Sale $113.39
(Reg. $139.99)

*NOTE: Items ordered with optional NIST calibration will require
approximately 10 days to complete the certification.