Herth+Buss PlusMinus multi Notice D'emploi page 13

Operating Instruction
Testing polarity
1. If the probe comes into contact with a pos-
itive conductor, the red LED lights up and
the voltage which is applied to the probe
is shown on the LCD display.
2. If the probe comes into contact with a
negative conductor, the green LED lights
up; all segments on the LED display are
simultaneously displayed and the buzzer
sounds.
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