MULTITEST M72 - M73 - M74 - M75
EN - 36
5.
If during measurement the green probe is
connected to the phase conductor and
the black probe is connected to the
protective conductor, the instrument does
not perform the test and emits a
prolonged sound to signal the anomalous
situation. The screen beside is displayed
for 5 seconds after which the instrument
displays the default screen of Ra
test
This can happen even if the wrong connection is performed on the back side of the
power socket