Operating Instructions
Power-Up
•Press the �key to turn the Humidity/Temperature meter ON or OFF.
Selecting Temperature Units
When the meter is first powered on, the default scale setting is set to the Celsius (°C ) scale. To change to Fahrenheit (°F) press the � button. Press again to revert to Celsius. The next time the meter
is turned on, the scale setting will be the same as it was when you powered off last time.
Data-Hold Operation
The present reading may be held on the display by pressing the � button. When the held data is no longer needed, release the data- hold operation by pressing the �button again. When the meter is in the Data Hold mode, the �, �, and � buttons are disabled.
Relative Operation
Pressing the � button causes the meter to memorize the present reading. The difference between the new reading and the memorized data will be displayed. Press the �button again to exit the Relative mode.
MIN/MAX Operation
Pressing the �button places the meter in the MIN/MAX mode. In this mode the maximum value and minimum value is kept in the memory simultaneously and updated with every new data reading. Pressing the �button displays the MAX indicator and the Maximum value on the display. Pressing �again will display the MIN indicator and the Minimum value on the display. Pressing �again causes the MAX and MIN indicators to blink together. This means that these data have been updated in the memory and the reading is the present temperature and humidity. When the meter is in MIN/MAX mode, the
�and �buttons are disabled. To exit MIN/MAX mode, press and hold �for two seconds.
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