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NOTE: The meter will automatically switch to
consume power from the AC adapter instead of the
battery when an AC adapter is plugged in and
consume the power normally. In this event, if the
battery installed correctly is rechargeable (for instance,
TH2822C), charging controller will be driven at the
same time no matter the instrument is on or off.
Low Battery Indication
At the use of battery for power supply, if the display
starts flashing the
indicator, it means that the
battery voltage is below normal working voltage
(below 6.8V). It is highly recommended that the
battery be replaced as soon as possible before
12VDC Input
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