Caliber IV™ Digital
Hygrometer/Thermometer
User Manual
Thank you for purchasing the Caliber IV™ digital
hygrometer and thermometer. We are certain that you will find
this is the most dependable and accurate unit available in the
consumer market. To maintain your hygrometer in optimal
working order, we recommend that you review this manual
thoroughly to understand how to use the advanced features of the
Caliber IV™.
1. Humidity Reading
2. Temperature Reading
3. Set
4. Max/Min/Clear
5. Fahrenheit/Celsius
6. Battery Tray
7. Magnetic Mount
Getting Started
1. Slide the battery tray out to insert the battery plus side up.
This will activate the display and begin the collection of readings.
2. Mount the unit onto the desired location. The best location is
in a central area where the airflow to the unit will not be
blocked. To attach the magnet mount to a surface, first ensure that
the surface is clean and free of any dust or other debris. For best
results, use an alcohol swab to clean the area where the adhesive
will be applied. Remove the backing paper from the adhesive disc
on the back of the magnet and apply firm pressure to hold the
magnet in place for about 30 seconds. Allow the adhesive to dry
for at least 24 hours before attaching the hygrometer.
Switching Between Celsius & Fahrenheit
To switch the display between Fahrenheit and Celsius temperature
readings, move the Fahrenheit/Celsius Switch back and forth.
MAX/MIN Recording & Display
The Caliber IV™ will record the minimum and maximum values for
both humidity and temperature. To view the maximum values,
press the MAX/MIN/Clear button one time. The maximum value
will be displayed with the word MAX at the top of the temperature
reading.
To view the minimum values, press the MAX/MIN/Clear button
two times. The minimum value will be displayed with the word
MIN at the top of the temperature reading.
To reset the values, while viewing either the MAX or MIN value,
press and hold the MAX/MIN/Clear button for about 5 seconds.
When the display shows empty values, that MAX or MIN value has
been reset. Both values reset independently. Removing or
replacing the battery will also reset both the minimum and
maximum values.
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