SEFRAM SEFRAM70 Manuel D'utilisation page 21

voltage in case of the presence of interference voltage.
When in contact with the parts to be tested, this meter may discharge
temporarily the interference voltage to a level below the ELV, but it will
be back to the original value when this meter is removed.
When the indication "voltage present" does not appear, it is highly
recommended installing earthing equipment before work.
When the indication "voltage present" appears on a part that is
expected to be disconnected of the installation, it is highly
recommended confirming by another means (e.g. use of an
adequate voltage detector, visual check of the disconnecting point of
the electric circuit, etc.) that there is no operating voltage on the part to
be tested and to conclude that the
voltage indicated by this meter is an interference voltage.