18
Screen Display
Operating Instructions
Displayed State
Sound and
Indicator Color
Error information & low battery
The ambient temperature is higher
than 40.0ºC (104.0ºF) or lower than
10.0ºC (50.0ºF).
A long beep with
the red indicator
light.
An error occurs when data is being
read from or written to the memory,
or the temperature correction is not
complete.
A long beep with
the red indicator
light.
When the battery voltage is lower
than 2.4V ± 0.1V, the low battery
symbol will appear on the display.
Please replace the batteries.
Silent
Measuring Ear Temperature
1. When using the thermometer for the first time, move the battery’s
insulating piece away.
Summary of Contents for PD-FR409-B
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