stored data. The date displayed at the bottom of trends are the data recording time of the first point
and last point respectively for current trend.
3.4.6 PROMPT SOUND
After selecting "ON", the loudspeaker turns on. The symbol will display in the main interface.
After selecting "OFF", the loudspeaker turns off,
will appear. When you change the settings,
the password input box will appear, enter the correct password "8015" to change. The inputting
method of password: move the cursor to the password display area, press the middle button, when
the rectangle frame turns to red selected state, adjust the number by the "Up" and "Down" button,
then press the middle button again to exit the selected state after adjusting. After entering the 4-bit
password, move the cursor to "CONFIRM", then press the middle button, the prompt sound setting
can be changed if the password is correct.
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