Extech Instruments RHT50 User Manual page 2

Introduction
Congratulations on your purchase of the Relative Humidity / Temperature / Pressure Datalogger; this
datalogger measures and stores up to 10,000 readings. The user can easily configure the logging rate,
high/low alarm and start-mode. It also downloads the stored data by plugging the module into a PC
USB port and running the supplied PC software. Data can then be graphed, printed and exported to
other applications. The data logger is supplied with a 3.6V ½ 'AA' lithium battery. This meter is shipped
fully tested and calibrated and, with proper use, will provide years of reliable service.
Features
Datalogger Memory stores 10,000 temperature, humidity and pressure readings
Selectable data sampling rate: 1 second to 18 hours
Manual and automatic datalogger start
Status Indication via Red/Yellow LED and Green LED
USB Interface for Set-up and Data Download
User-Programmable Alarm Thresholds
Long battery life
Description
1. USB connector
2. Alarm LED (red/yellow)
3. Record LED (green)
4. Start button
5. Battery cover latch
6. Tripod mount
7. RH, Temperature, Pressure sensors
8. Mounting bracket
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