Switching between mute and un-mute
Error information & low battery
Screen Display
Operating Instructions
Displayed State
Sound and
backlight
Toggle the
Sound switch
to
switch between mute and
un-mute
The symbol is displayed in
Mute mode and disappears in
Un-mute mode.
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 2.5V ± 0.1V, the
low battery symbol will appear
on the display. Please replace
the batteries.
Silent
Silent
3 short beeps
3 short beeps
15
