(COM terminal).
Get the red and black probes to contact the tested part, such as power socket (Figure 8).
Read the measured data from the LCD screen.
Figure 8
6. Other Functions
Press and hold the HOLD button for about 2 seconds to turn on or off LCD backlight function.
Automatic Shutdown: If the knob switch cannot be operated in about 15 minutes in the
measurement process, the meter will "automatically shut down" to save energy. In the state of
automatic shutdown, turn the knob switch to OFF position and restart the machine, or click any
button to wake up the instrument.
Enable automatic shutdown:
Press and hold the SELECT key, and then turn on the power switch to start up the instrument,
then there are three beeps, indicating that the automatic shutdown function is canceled. When
the machine is turned off and then turned on, the automatic shutdown function will be restored.
About 1 minute before the automatic shutdown of the instrument, the buzzer will ring 3 times
continuously for warning, and the buzzer will give a long beep for warning before shutdown.
When the automatic shutdown function is canceled, three continuous alarm beeps will be given
every 15 minutes.
Buzzer: There is a “Beep” (about 0.25 seconds) from the buzzer when you press any button or
turn the function switch and the function button is effective. In the mode, if the tested
circuit is well conducted (≤50Ω), the buzzer will ring continuously; when the measured voltage
or current exceeds the range, there are continuous intermittent "Beeps" from buzzer for
over-range warning. The functional status is shown as follows:
a. When AC/DC voltage > 600V, there is beep for warning.
b. Low voltage detection: When the battery voltage is lower than 2.5V, the " " battery
undervoltage symbol will be displayed, in this case, the measurement accuracy may be
reduced and the battery needs to be replaced in time; when the battery voltage is lower than
2.2 V, only the battery undervoltage symbol will be displayed in the full display after boot and
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