B&K Precision SEFRAM 7212 Manuel Utilisateur page 49

NCV
Warning
5. Measurement range: about 36V~600V, 50Hz or 60Hz.
6. When using, even if there is no sound or display prompt,
the wire to be measured may still have voltage. The
instrument may be affected by other factors (such as
shielded wires and cables, thickness of insulation layer,
distance from voltage source, diversity in socket design,
etc.), and fail to sense the electric field.
7. When judging the live wire, do not put your fingers or
conductors into the COM jack, otherwise there may be a
risk of electric shock.
：
Live
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