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instrument according to the color.
Intelligent power management
When the instrument is not operated for a long time, the LCD backlight is
automatically dimmed to save power; the instrument has the function of charging
prompt with low power and over-discharge protection; when the instrument is low
power, the charger can be plugged in to charge, and the instrument can be used
normally in the charging process.
Instructions for use of printer
The key of the printer and the indicator of the printer are integrated. When the
printer is powered on, the indicator light is normally on, and it flashes when the paper is
missing. Press the button once and the printer passes the paper.
Printer change paper: take out the rotating spanner and open the paper cover;
Load the printer paper and pull out a piece of printer paper (tear the teeth out a little bit).
Close the cover and press the print head to the print head. Press the print head back to
the print head with a bit of force.
Operation instruction
After all the test wires are connected, turn on the power switch and enter the "main
menu" screen after the instrument is initialized, as shown in the figure below.
