Extech RHT20 Specifications

Ordering Information:

RHT20 ............Humidity and Temperature USB Datalogger

Specifications subject to change without notice.
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02/24/09 - R1

Features:

• USB interface for easy setup and data download

• Selectable data sampling rate: 1second to 24 hours

• User-programmable alarm thresholds for RH and Temperature

• LCD displays current readings, Min/Max, and alarm status

• Long battery life (approx. 1 year)

• Complete with 3.6V Lithium battery, mounting bracket with

combination lock, and Windows® 2000, XP, and Vista compatible
analysis software

Records up to 16,000 readings for each parameter

Datalogs 16,000 Humidity and 16,000 Temperature readings with a user

programmable sample rate

Humidity/Temperature Datalogger

Specifications Range Resolution Accuracy (%rdg+digits)

Temperature -40 to 158°F 0.1°F/°C ±1.8°F (14 to 104°F)

±3.6°F (all other ranges)

-40 to 70°C ±1.0°C (-10 to 40°C)
±2.0°C (all other ranges)

Humidity 0 to 100%RH 0.1%RH ±3%RH (40 to 60%)

±3.5%RH (20 to 40 & 60 to 80%)
±5%RH (0 to 20 & 80 to 100%)

Datalogging interval 1 second to 24 hours
Memory Temperature: 16,000 points; Relative Humidity: 16,000 points
Dimensions 3.7 x 1.9 x 1.2" (94.4 x 48.9 x 31.2mm)
Weight 3.2oz (90.7g)

Monitors Humidity and Temperature levels in
warehouse, storage rooms, freezers, shipping
vans, and offices

USB connector easily plugs into a computer for
data analysis of Temperature and Humidity