Radio Shack 2200245 - Operating Instructions and Usage; Preparation Before First Use; Temperature Reading Calibration

7. Operating Instructions
7.1. Before Use
• Install two AAA batteries if not already installed. Power on the
thermometer by pressing the trigger. If there is a low battery
indicator on the display, replace the batteries. See Installing or
Replacing Batteries section 7.3 for instructions.
• If problems are detected when the thermometer is powered on,
the display will read “Err” to indicate that an error has been found.
Check to make sure that the IR sensor is not dirty or damaged.
• Check the IR sensor for dust and debris. If the sensor is dirty, clean
it. See section 8 for care and cleaning instructions.
• For the most accurate results, the thermometer needs to be
brought into the testing environment (at room temperature) for
30 minutes before using.
• Unexpected changes in ambient room temperature or humidity
may produce inaccurate results.
• Before taking a temporal (forehead) temperature reading, make
sure the person’s forehead is clean and not covered by hair or
clothing.
• Ensure that the thermometer is calibrated. See below for instructions.
7.2. Calibration (Adjusting Temp. Reading Oset)
To verify the accuracy of the thermometer, measure the temperature
of an object with a known surface temperature to use as a reference
temperature. If the dierence between the measured and reference
temperatures is greater than 0.5°F (0.3°C), adjust the oset as follows:
1. Press the MODE button for two (2) seconds. The screen will display
“F1” (function 1).
2. Press the MODE button again until the display shows “F3” (function 3).
3. Press the + or - buttons to add or subtract the dierence between
the thermometer reading and the reference temperature.
• Example: If the thermometer is reading 0.8° higher than expected,
press - until the display reads -0.8° to subtract 0.8° from each
temperature reading. If the thermometer reading was lower than
expected, instead press + to add 0.8° to each temperature reading.
4. Check the thermometer against the reference temperature again.
The temperature should be within 0.5°F (0.3°C) of the reference
temperature. If the dierence is greater than 0.5°F (0.3°C), repeat
these steps.
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