User's Manual

15
there are 20 groups of
memory data in total.
If there is no measurement
data, the LCD displays only "-
- - " and the M symbol, and the
M symbol blinks.
No sound is emitted.
C/F Conversion
LCD
Display
Operation Steps
Sound and Backlight
In the power-off state, press
the measurement key for
more than 6s but less than 8s
to enter the temperature unit
conversion mode. Within 5s
after releasing the
measurement key, press the
measurement key again, and
then, the temperature unit is
converted once, until the
measurement key is released
for more than 5s and the
thermometer is automatically
powered off.
No sound is emitted.
Display of Incorrect Information
When the environment
temperature is higher than
40.0C (104F) or lower than
10.0C (50.0F), "Er1" is
displayed.
Three short buzzing
sounds and 3s green
backlight