4johtosensaoinnin
4johtosensaoinnin is not a widely recognized term in Finnish engineering or academic literature. The string appears to combine elements that could relate to cables or conductors (johtoja/johto) with sensing or instrumentation (sensointi/sensorointi), plus an initial digit 4. Because there are no reliable sources, the precise meaning and scope of the term cannot be established.
Possible interpretations, based on common Finnish word formation, include a four-conductor cable system with integrated sensing,
As a result, the term serves best as a stub pending sourcing or clarification. If you meant