Measuring Ear Temperature - Jumper PD-FR409-B Instruction Manual

Screen Display
Error information & low battery

Measuring Ear Temperature

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