Extech Instruments RH10 User Manual page 2

Introduction
Congratulations on your purchase of the Extech Hygro‐Thermometer Model RH10. This device
measures relative humidity and air temperature using the attached probe. The large, easy‐to‐read
backlit LCD includes primary and secondary displays plus status indicators. To conserve battery
energy the meter switches OFF automatically after a 30 minute period of inactivity. This device is
shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
Please visit our website (www.extech.com) to check for the latest version of this User Guide,
Product Updates, and Customer Support.
Safety

The probe extending from the top of the meter houses the sensitive measurement sensors,
do not mishandle, shock, or allow liquids to come into contact with it.

The probe sensor can cause personal injury if it is misused or mishandled. Use caution when
handling this device.

Do not allow children to handle this device or the accessories and packing materials supplied
with it.

The meter uses a 9V battery (installed in the rear battery compartment). Please remove the
battery from the meter if the meter is not to be used for a long period of time. Spent
batteries that remain in the meter could potentially leak and cause damage to the meter.
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