2. Control panel
Display.
Current terminal (C+).
Potential terminal (P+).
Potential terminal (P-).
Battery charge indicator.
Current terminal (C-).
Selector of ranges and currents.
Battery key. To measure the battery
charge condition.
Safety ground.
Printer Key
Filter key.
Power cord connector.
Fuse.
Auxiliary supply connector.
Printer.
USB connector.
On/Off switch.
Test current control.
3 Start key.
4 Stop key.
5 Save key.
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